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Review
Chemistry, Multidisciplinary
Sikandar Aftab et al.
Summary: The piezo-phototronic effect has the potential to enhance the performance of 2D semiconductor-based flexible optoelectronics, leading to new opportunities in the electronics field. Mechanical exfoliation and chemical vapor deposition influence this effect on a transparent, ultrasensitive, and flexible van der Waals heterostructure, allowing the use of intrinsic semiconductors like 2D transition metal dichalcogenides (TMD). This review article discusses the latest and most promising TMD-based photodetectors and piezo-phototronic devices, which can enable the development of flexible, self-powered sensors and wearable electronics for health monitoring.
Article
Physics, Multidisciplinary
Tao Zhu et al.
Frontiers of Physics
(2023)
Article
Nanoscience & Nanotechnology
Bori Shi et al.
Summary: A dual-function laser etching method is developed to fabricate high-performance photodetectors, which enable efficient non-contact human-machine interfaces for various applications.
NANO-MICRO LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Anas A. M. Alqanoo et al.
Summary: The applications of silver nanowires (AgNWs) depend on their purity and morphology. In this study, the morphological changes of AgNWs during growth were tracked to determine the optimal reaction time and temperature. UV-Vis absorption spectra were used to investigate the relationship between reaction time and temperature. An equation was developed to calculate reaction time at any given reaction temperature. The average diameter of the AgNWs was found to be temperature-dependent, with the minimum value observed at a reaction temperature of 150°C. A purification technique was conducted to remove by-products, and an AgNWs-based porous Si device was fabricated and showed high sensitivity and detectivity.
Article
Nanoscience & Nanotechnology
Ziming Wang et al.
Summary: A gate-controlled phototransistor based on 2D SiP2/h-BN with ultrahigh sensitivity is designed and demonstrated for the first time. The phototransistor exhibits an ultrahigh detectivity and a gate tunable responsivity. The study validates the great potential of 2D SiP2 phototransistors for ultrasensitive optoelectronic applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Xiaolei Deng et al.
Summary: In this study, a woven optoelectronic keyboard consisting of four individual fibrous photodetectors was integrated to achieve higher level of integration. Each photodetector is based on a uniform type-II TiO2/Cs3Cu2I5 heterojunction, providing improved optoelectronic performance. The woven keyboard can perform logic AND/OR operations and identify UV light signals as keyboard input signals.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jianting Lu et al.
Summary: High-resolution imaging is crucial for intelligent technologies and is important for extracting and storing high-sensitivity information. However, the development of ultrabroadband imaging is hindered by the incompatibility between non-silicon optoelectronic materials and traditional integrated circuits, as well as the lack of competent photosensitive semiconductors in the infrared region. In this study, wafer-scale tellurene photoelectric functional units are monolithically integrated through room-temperature pulsed-laser deposition. The tellurene photodetectors demonstrate wide-spectrum photoresponse and unprecedented photosensitivity, enabling the realization of ultrabroadband imager and high-resolution photoelectric imaging.
ADVANCED MATERIALS
(2023)
Article
Physics, Applied
Sina Li et al.
Summary: Researchers have designed a vdW heterojunction device using low-symmetric CrOCl, which exhibits stable anti-ambipolar behavior and polarization-sensitive photodetection. The anti-ambipolar transport behavior in a MoTe2 channel is observed due to the gate-tunable band bending and charge transfer at the MoTe2/CrOCl interface. The device shows good photodetection performance with a responsivity of 1.05 A/W and a temporal response of 970 μs. With the anisotropic CrOCl as a photosensitizing layer, the device achieves polarization-sensitive photodetection with a photocurrent dichroic ratio of up to 6. This work provides a valid device model and design strategy for versatile optoelectronics, including anti-ambipolar transistors and polarimetric photodetectors.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Tong Xu et al.
Summary: In this study, a high-performance self-powered photodetector made of SnO2 microwire, p-type GaN film, and graphene transparent electrode was proposed and fabricated. The detector is sensitive to ultraviolet light signals and exhibits excellent detection performance and enhanced characteristics.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Xingyu Tang et al.
Summary: Researchers have fabricated a highly sensitive and fast photodetector based on WSe2/MoSe2 vertical p-n van der Waals heterojunction via an effective photogating effect. The photodetector exhibits a high responsivity of 1260 A/W, a specific detectivity of 6.05 x 1012 Jones, a large external quantum efficiency approaching 2.68 x 105%, and a short response time of 3.5 ms. This work provides a facile strategy for improving the device performance to meet the increasing demand of highly sensitive light sensing devices.
MICROELECTRONIC ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Jianfeng Jiang et al.
Summary: The IRDS predicts that the scaling of silicon-based MOSFETs will stop at 12 nm and the ultimate supply voltage will not decrease to less than 0.6 V. Two-dimensional indium selenide (InSe) has been explored as a potential channel material for further miniaturization of electronic devices, but no 2D semiconductor-based FETs have shown better performance than silicon FETs. In this study, a FET with 2D InSe as the channel material is reported, operating at 0.5 V with record high transconductance and surpassing the performance of silicon FETs. Yttrium-doping-induced phase-transition method is developed for making ohmic contacts with InSe and the InSe FET is scaled down to 10 nm in channel length. Low subthreshold swing and drain-induced barrier lowering are achieved in the InSe FETs, as well as low contact resistance and smaller energy-delay product than predicted for silicon.
Article
Multidisciplinary Sciences
Jaewang Park et al.
Summary: Controlling the crystallinity and surface morphology of perovskite layers is crucial for achieving high-efficiency perovskite solar cells. By adding alkylammonium chlorides (RACl) to a-formamidinium lead iodide (FAPbI(3)), the crystallization process and surface morphology of the perovskite thin films can be controlled. The resulting perovskite thin layers facilitate the fabrication of perovskite solar cells with a high power-conversion efficiency of 26.08%.
Article
Optics
Ruixuan Chen et al.
Summary: The demand for high accuracy and resolution in sensors for self-driving vehicles has led to the development of parallelization in LiDAR technologies. However, the existing LiDAR categories face limitations from congestion in time and frequency domains, degrading measurement performance and complexity. Researchers have introduced a chaotic microcomb light source that is immune to congestion and demonstrated a new type of interference-free LiDAR with simplified architecture and state-of-the-art ranging performance. This technology has the potential to reshape the entire LiDAR ecosystem.
Article
Multidisciplinary Sciences
Stefan M. Koepfli et al.
Summary: In this study, we demonstrate a graphene-based photodetector with a >500 gigahertz, flat-frequency response, operating in ambient conditions across a 200-nanometer-wide spectral band. Our photodetector combines graphene with metamaterial perfect absorbers and direct illumination from a single-mode fiber, allowing for higher optical powers and record-high bandwidths. Our results show that graphene photodetectors can outperform conventional technologies in terms of speed, bandwidth, and spectral range.
Article
Chemistry, Multidisciplinary
Gaokai Wang et al.
Summary: A facile submicron-spacing vapor deposition (SSVD) method is reported for growing wafer-scale single crystal h-BN layers with controllable thickness on sapphire substrates. The epitaxial h-BN layer shows high crystalline quality and is demonstrated to have potential applications in a deep ultraviolet photodetector and a ZrS2/h-BN heterostructure. This method provides a promising path towards future 2D semiconductor-based electronics and optoelectronics.
Review
Multidisciplinary Sciences
Fang Wang et al.
Summary: This article proposes practical guidelines for characterizing the performance of 2D photodetectors and analyzes common situations where their performance can be misestimated.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Bowon Moon et al.
Summary: It is reported that the properties and stability of hybrid photodetectors can be improved by surface passivation using the quaternary ammonium ligand (DDAB). The average carrier lifetime of DDAB-treated CsPbBr3 PQDs is longer than that of pristine CsPbBr3 PQDs. A 2D-0D hybrid photodetector, fabricated by deposition of DDAB-capped PQDs on the WSe2 field-effect transistor device, exhibits enhanced responsivity and detectivity.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Qiaojue Ye et al.
Summary: This study systematically investigates the optoelectronic properties of a newly emerged quaternary van der Waals semiconductor, silver indium phosphorus sulfide (AgInP2S6). The material exhibits fast response and stable photoswitching operation even under high temperatures, making it a valuable candidate for next-generation optoelectronic devices in extreme working circumstances.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Gaoming Li et al.
Summary: Surface plasmonic resonance (SPR) induced by metallic nanoparticles can significantly enhance the response of photodetectors (PD). The enhancement depends on the morphology and roughness of the surface where the nanoparticles are distributed. In this study, mechanical polishing was used to create different surface roughnesses for the ZnO film, followed by sputtering of Al nanoparticles. The results showed that increasing surface roughness enhanced the photo response and strengthened the SPR induced by Al nanoparticles.
Article
Chemistry, Multidisciplinary
Yi Peng et al.
Summary: In this work, a chemical vapor deposition method was proposed to vertically synthesize self-assembly oriented hexagonal boron nitride on gallium nitride directly, enabling the construction of high-performance electronic and photoelectronic devices. The material composition, crystalline quality and orientation were investigated using multiple characterization methods. Thermal conductivity was found to be enhanced by twofold in the h-BN incorporated sample by using the optothermal Raman technique. Additionally, a vertical-ordered (VO)h-BN/GaN heterojunction photodetector was produced based on the synthesis, exhibiting a high ultraviolet photoresponsivity and detectivity, as well as stability in high temperature conditions. This work provides a new synthesis method for preparing h-BN on GaN-based materials directly and proposes a novel vertically oriented heterojunction structure with great potential in optoelectronic devices.
Article
Nanoscience & Nanotechnology
Wen Hsin Chang et al.
Summary: This work demonstrates the fabrication of atomically aligned van der Waals junctions through thermal-induced crystallization of layered Sb2Te3 electrodes on monolayer MoS2. The Sb2Te3/W contact shows better device performance on MoS2 MOSFETs compared to the Sb/W contact. The ideal vdW junctions exhibit extreme high-thermal robustness.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Kimberly Intonti et al.
Summary: This study reports the optoelectronic characterization of few-layer ReSe2 field effect transistors at different pressures. The devices exhibit a dominant n-type behavior with low Schottky barrier and significant hysteresis. The conductance and mobility of the devices are affected by air pressure, increasing with lower pressure due to the desorption of electronegative air molecules. The photoresponse of the device changes from positive photoconductivity at higher pressure to negative photoconductivity at lower pressure, which can be explained by the desorption of molecules and the defect trapping of photogenerated carriers.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wei He et al.
Summary: This study introduces a novel quaternary intrinsic p-type 2D semiconductor, CuBiP2Se6 atomic layers, which exhibits high work function and moderate hole mobility. A phototransistor based on this material is designed and fabricated, demonstrating outstanding optoelectronic performance with a broad working wavelength and excellent imaging sensing capability. Thus, CuBiP2Se6 is an ideal p-type candidate material for next-generation CMOS logic devices.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Zihao Huang et al.
Summary: With the rapid development of two-dimensional semiconductor technology, a serious problem of chemical disorder at metal-semiconductor interface has arisen. By using topological Bi2Se3 as electrodes, defect-free van der Waals contacts are achieved, significantly improving the performance of 2D semiconductor optoelectronic devices. The results demonstrate high responsivity, excellent detectivity, and fast rise/decay time, as well as high-resolution visible-light imaging capability, opening up new possibilities for high-performance electronics and optoelectronics.
Article
Engineering, Electrical & Electronic
Zhen-Yu Zhang et al.
Summary: The study reports a narrowband blue light photodetector based on CH3NH3PbBrCl2 single crystal and its filterless application in blue light hazard detection. The photodetector is only sensitive to light between 400 and 500 nm, allowing for accurate detection of blue light hazard levels. With the introduction of back-end circuits, the photodetector has been applied to a portable blue light hazard detection system, showing potential applications in the future healthcare field.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Materials Science, Multidisciplinary
Ming Deng et al.
Summary: A universal vacuum evaporation strategy is proposed to prepare copper halide films with wafer-scale spatial homogeneity. The self-powered UV photodetecting performances of common wide-bandgap semiconductors are significantly improved by optimizing the built-in electric fields using the electric field manipulation method. The fabricated GaN-substrate heterojunction photodetector exhibits impressive characteristics and outstanding stability.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Physics, Applied
Dou Wang et al.
Summary: This article introduces a method for preparing single-layer gold (Au) nanoparticles and applying them to MoS2 photodetectors, achieving high responsivity. This method provides a simple and effective way to fabricate high-performance 2D material-based photodetectors.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Zhan Gao et al.
Summary: This study presents an electronic eye system with a fully transparent artificial retina that can perceive light from all directions without weakening the photo-response. Demonstrations of different shaped electronic eye prototypes show the possibility for double sided imaging in a single device configuration.
Article
Chemistry, Multidisciplinary
Xiaokun Wen et al.
Summary: Recent investigations have found that contacts made with conventional deposition processes using elemental semimetals (Bi and Sb) have the capability to approach the quantum limit in two-dimensional (2D) semiconductor contacts. This study demonstrates the use of a nondestructive van der Waals (vdW) transfer process to create novel compound Dirac semimetal ZrTe2 contacts to MoS2, which exhibit excellent ohmic contact characteristics and adjustable work functions.
Article
Multidisciplinary Sciences
Zhenjia Zhou et al.
Summary: This study reports a high-to-low temperature strategy for the controlled growth of multiple-layered vdW superconductor heterostructure films on a wafer scale. The presence of parallel, clean, and atomically sharp vdW interfaces on a large scale, with very little contamination between neighboring layers, has been revealed. The method can be easily applied to other situations involving 2D materials, potentially accelerating the design of next-generation functional devices and applications.
Article
Chemistry, Physical
Yin Xia et al.
Summary: This study reports an improved chemical vapor deposition synthesis method for growing large-area high-quality 2D semiconductor films with fast and non-toxic growth, which has the potential to reduce manufacturing costs.
Article
Chemistry, Physical
Ruiheng Su et al.
Summary: Identifying the essential components of superconductivity in graphene-based systems remains a critical problem in two-dimensional materials research. This field is connected to the mysteries that underpin investigations of unconventional superconductivity in condensed-matter physics. Here we report the discovery of superconductivity in twisted double bilayer graphene (TDBG) in proximity to WSe2, showing the correlation between a high density of states and the emergence of superconductivity in TDBG while revealing a possible role for isospin fluctuations in the pairing.
Article
Nanoscience & Nanotechnology
Zui Tao et al.
Summary: A giant intrinsic spin Hall effect coexisting with ferromagnetism has been observed in AB-stacked MoTe2/WSe2 moire hetero-bilayers. This finding demonstrates the potential of moire engineering for spintronics applications, as it enables long-range spin Hall transport.
NATURE NANOTECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Ashok Mondal et al.
Summary: Researchers have developed a residue-free transfer method using polypropylene carbonate to transfer monolayer MoS2 onto a hexagonal boron nitride substrate at the centimetre scale. By incorporating a bismuth semimetal contact with an atomically clean monolayer MoS2 field-effect transistor, they achieved an ultralow Ohmic contact resistance and a record-high on/off ratio, making it an ideal platform for high-performance electrical devices using large-area transition metal dichalcogenides.
NATURE NANOTECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Tom S. Seifert et al.
Summary: The emerging field of orbitronics explores the potential of utilizing electron orbital momentum L for transmitting magnetic information over longer distances in more materials with higher density. However, the direct experimental observation of L currents and their conversion into charge currents has been challenging. In this study, we demonstrate the ultrafast transport of angular momentum in Ni|W|SiO2 thin-film stacks, with resulting charge-current bursts exhibiting a delay and width that increase with the W thickness. Our findings suggest the potential of using orbitronic materials for future ultrafast devices and provide insight into conversion processes.
NATURE NANOTECHNOLOGY
(2023)
Article
Optics
H. Agarwal et al.
Summary: This study demonstrates a large ultra-broadband photoconductivity in twisted double bilayer graphene heterostructures with a spectral range of 2-100 μm. The unique properties of the twisted decoupled heterostructures enable parallel photoactive channels and strong photoconductivity enhancements. This research introduces a viable route for engineering gapped graphene photodetectors with three-dimensional scalability.
Article
Physics, Multidisciplinary
Carlos R. Kometter et al.
Article
Nanoscience & Nanotechnology
Tanmoy Das et al.
Summary: Achieving effective polarity control of n- and p-type transistors is critical for integrating 2D materials into CMOS logic circuits. By utilizing an aluminum oxide passivation layer, a complete carrier polarity conversion from p- to n-type was achieved, resulting in precisely tuned n-type behavior.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Lingxian Kong et al.
Summary: This study demonstrates the use of a MoTe2/MoS2 2D heterojunction to improve the performance of photodetectors and achieve polarization-sensitive, self-powered, and broadband photodetection and imaging. The device has a self-powered photoresponse ranging from 520 to 1550 nm due to the built-in electric field of the heterojunction. Under 915 nm light illumination, the device shows outstanding performance, including high responsivity, specific detectivity, fast rise/decay time, and high on/off ratio. The polarization imaging capabilities of the device in scattering surroundings are also demonstrated, with significant contrast enhancement compared to S-0. This work opens up new avenues for developing high-performance polarization-sensitive photodetection and next-generation polarized imaging using anisotropic semimetals heterojunction photodetectors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Jiangfan Luo et al.
Summary: This article presents an effective and simple approach for fabricating high-quality MnBi2Te4 films and addresses potential issues and solutions in the growth process.
Article
Chemistry, Multidisciplinary
Hossein Alijani et al.
Article
Chemistry, Multidisciplinary
Shi Li et al.
Summary: This study proposes ultra-thin self-powered photodetectors (PDs) using Cu-In-Se quantum dots (QDs) for high-performance wearable health monitoring systems. The PDs exhibit high detectivity, fast response time, and an ultrathin form factor, making them suitable for next-generation wearable photoplethysmography (PPG) systems.
Article
Chemistry, Multidisciplinary
Shi Zhang et al.
Summary: This paper introduces an infrared photodetector based on tantalum nickel selenide (Ta2NiSe5) with a hexagonal boron nitride (h-BN) encapsulation technique, operating in the wavelength range of 520 nm to 4.6 μm. The photodetector exhibits high responsivity, noise equivalent power, and peak detectivity under ambient conditions. The paper also investigates the photocurrent generation mechanisms, photopolarization dependence, and concealed-target imaging capability of the device. These findings suggest the potential of Ta2NiSe5 as a low-dimensional material for advanced nano-optoelectronic devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Qiang Yu et al.
Summary: This study develops a fiber-based femtosecond laser with freestanding-growth 2D BiCuSeO as a saturable absorber by a fully dry integration process. The controllable growth method enables a clean interface between the saturable absorber and the fiber, leading to high-performance ultrafast photonic devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yang Yang et al.
Summary: Controllable synthesis of transition metal phosphorous chalcogenides (TMPCs) based on a subtractive element growth mechanism is reported. Among them, SnPS3 exhibits an effective nonlinear susceptibility chi(2) of 8.41 x 10-11 m V-1. The CdPSe3 photodetector displays high responsivity (582 mA W-1) and detectivity (3.19 x 1011 Jones).
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Qundong Fu et al.
Summary: 2D Tellurene (2D Te) exhibits a strong nonlinear optical response in the infrared region due to its unique structure, making it a promising candidate for efficient nonlinear semiconductors. The large second-order nonlinear optical susceptibility (chi(2)) of 2D Te is significantly higher than that of other 2D materials, reaching a peak value at approximately 2300 nm. The exceptional performance is attributed to the presence of large Berry curvature dipole (BCD) located at the Weyl points of 2D Te.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Gan Luo et al.
Summary: An effective approach to significantly improve the performance of organic photodetectors for health monitoring applications is reported. By creating an ideal metal-semiconductor junction interface, an ultrahigh signal amplification efficiency of 37.1 S A(-1) is achieved, allowing for a more than four orders of magnitude increase in the photoresponse signal-to-noise ratio. This work offers a versatile and effective method to greatly enhance the performance of photodetectors, promising to revolutionize health monitoring technologies.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Weitong Wu et al.
Summary: This study develops a noninvasive photoelectric sensing system that integrates flexible perovskite photodetector and all-inorganic LEDs to monitor human health status in real time. The pulse rate and swelling degree of finger joints can be extracted and analyzed using the photodetectors, providing a new method for disease prevention and early diagnosis. The system has shape adaptability and lightweight, which is promising for future wearable medical applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jiayue Han et al.
Summary: Detecting and distinguishing light polarization states is of significant importance in scientific studies and industry applications. In this study, a broadband polarization photodetector with high PRs and wavelength-dependent polarities using a 2D anisotropic/isotropic Nb2GeTe4/MoS2 van der Waals heterostructure is demonstrated, showing effectiveness in polarized communication and imaging.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Myungjae Lee et al.
Summary: This paper reports three-atom-thick waveguides, called delta waveguides, based on wafer-scale molybdenum disulfide (MoS2) monolayers, which can guide visible and near-infrared light over millimeter-scale distances with low loss and efficient in-coupling. The extreme thinness of the waveguides enables a light-trapping mechanism similar to a delta-potential well in quantum mechanics, allowing for guided waves that propagate freely along the in-plane direction but are confined along the out-of-plane direction. The integration of thin-film optical components with delta waveguides demonstrates key functionalities essential for two-dimensional photonics.
Article
Materials Science, Multidisciplinary
Weilin Chen et al.
Summary: This research describes a high-performance violet phosphorus phototransistor that achieves ultra-low background noise and ultra-high image contrast by constructing a trap-free interface between violet phosphorus and hexagonal boron nitride. The key focus of this study is to develop a new type of photodetector for accurate imaging in deep-sea and deep-space explorations.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yuhang Ma et al.
Summary: In this study, high-speed and sensitive UV-Vis photodetectors based on a typical 1D van der Waals material, antimony sulfide (Sb2S3), were constructed. The Sb2S3 nanowire photodetector exhibited pronounced photosensitivity and distinct polarization-discriminating photoresponse, along with excellent response time and thermal stability. This research provides a new option for advanced multifunctional optoelectronic systems in extreme working environments.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Xusheng Wang et al.
Summary: In this study, excellent photoelectric performance is achieved by integrating AgInGaS quantum dots (AIGS-QDs) with high absorption coefficient and quantum efficiency onto WS2 atomic layers, confirming the interfacial charge transfer from AIGS-QDs to WS2 layer. The type II energy band arrangement between WS2 and AIGS-QDs enables efficient separation of photoexcited carriers. This WS2/AIGS-QDs photodetector exhibits ultrahigh responsivity, external quantum efficiency, and detectivity.
Article
Materials Science, Multidisciplinary
Shiwei Zhang et al.
Article
Engineering, Electrical & Electronic
Meng-Yu Tsai et al.
Summary: A reconfigurable field-effect transistor based on a hexagonal boron nitride/rhenium diselenide/hexagonal boron nitride heterostructure offers nonvolatile control of polarity through photoinduced trapping mechanism and can emulate synaptic functions.
NATURE ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Sadegh Kamaei et al.
Summary: The integration of logic switches and neuromorphic functions using 2D semiconductors and ferroelectric materials on the same platform is demonstrated. Four types of logic switches and artificial synapses are created, showcasing their potential for low power computing and novel functionalities.
NATURE ELECTRONICS
(2023)
Review
Nanoscience & Nanotechnology
Xingang Liu et al.
Summary: The vigorous development of two-dimensional (2D) materials brings about numerous opportunities for lithium-ion batteries (LIBs) due to their unique 2D layered structure, large specific surface area, outstanding mechanical and flexibility properties, etc. Modern technologies for production of 2D materials include but are not limited to mechanochemical (solid-state/liquid-phase) exfoliation, the solvothermal method, and chemical vapor deposition. This review highlights strategies for the production of 2D materials via solid-state mechanochemistry, focusing on traditional high energy ball-milling and Sichuan University patented pan-milling. The mechanism involving exfoliation, edge selective carbon radical generation of the 2D materials is delineated, followed by a detailed discussion on representative mechanochemical techniques for tailored and improved lithium-ion storage performance. Given the advantages of the solid-state mechanochemical method, there is great promise for the commercialization of 2D materials for the next-generation high-performance LIBs.
NANO MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Shaofeng Wen et al.
Summary: This study demonstrates the tunable temperature coefficient of resistance (TCR) in palladium diselenide (PdSe2) nanosheet-based field effect transistors (FETs) through gate voltage modulation, and also shows the potential application of PdSe2 nanosheet-based FETs as bolometric photodetectors.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Kiho Kim et al.
Summary: Photodynamic therapy (PDT) is a promising cancer treatment that can destroy malignant tissues selectively with fewer side effects and less pain. A flexible and fully implantable wireless optoelectronic system is introduced to integrate PDT and hyperthermia, and to monitor tumor size in real-time. This system shows superior capabilities in simultaneous cancer treatment and tumor size monitoring through wireless power and data transmissions.
NPJ FLEXIBLE ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
A. Di Bartolomeo et al.
Summary: The photoconductivity of monolayer MoS2 back-gate transistors is investigated with respect to temperature and pressure. The photocurrent shows linear increase with light intensity, reaching a maximum responsivity of approximately 30 A/W in air. The photocurrent enhancement is observed at elevated temperatures and reduced pressures, which can be attributed to the desorption of adsorbates such as O2 and H2O molecules, leading to an increase in the n-doping level and channel current.
MATERIALS TODAY NANO
(2023)
Article
Materials Science, Multidisciplinary
Yong-Lin Wu et al.
Summary: A novel nano-WS2/graphene nanosheets composite was synthesized using ball milling with xylitol as an auxiliary agent and high-temperature sintering. The addition of xylitol improved the shear force during ball milling and enhanced the interface contact between graphite and WS2. The resulting WS2/GNSs composites showed a high reversible specific capacity of 705 mAh g(-1) and a capacity retention of 95% after 200 cycles at a current density of 250 mA g(-1), due to their higher Li+ diffusion coefficient (2.2 x 10(-9) cm(2) s(-1)) and specific surface area (70.10 m(2) g(-1)). The xylitol-assisted ball milling method demonstrated in this work is suitable for large-scale preparation of two-dimensional layer materials into nanosheets.
Article
Chemistry, Multidisciplinary
Fei Wang et al.
Summary: In this study, highly conductive two-dimensional TaSe2 is explored as a novel anode material with zero-strain feature and excellent cycling stability. It exhibits the highest specific capacity among zero-strain anode materials and surpasses graphite anode in energy density. Its insensitivity to loading mass results in high areal, volumetric, and gravimetric specific capacities.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Yongji Wang et al.
Summary: 2D heterostructures are promising alternatives to conventional semiconductors. A facile method of chemical vapor deposition is reported to prepare vertical 1H/1T' MoS2 heterophase structures, which exhibit excellent rectification and photodetection properties.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Peng Wang et al.
Summary: This study introduces an advanced artificially intelligent optoelectronic information system that accurately simulates the activation process of a human visual nociceptive pathway. By utilizing a two-dimensional natural defective III-VI semiconductor beta-In2S3, researchers developed visible light-triggered artificial photonic nociceptors that perfectly reproduce the pain perception characteristics of the human visual system.
Article
Materials Science, Multidisciplinary
Xing-Lai Zhang et al.
Summary: In this study, a MoS2-on-ZnO vertical heterojunction photodetector with photogating effect was designed and constructed to overcome the long response time and low photoresponse of traditional ZnO photodetectors. The ZnO nanowire, with high carrier mobility, was used to respond to ultraviolet light, while the MoS2 flake, as a photogating layer, responded to visible light and transferred photogenerated electrons into the ZnO nanowire to adjust its conductivity. The experimental results demonstrated that the photodetector exhibited high photoresponsivity and fast response speed under both ultraviolet light and visible light irradiation.
Article
Chemistry, Multidisciplinary
Weifeng Zhang et al.
Summary: A strategy for fabricating ultrastretchable MoS2 photoreceptors is proposed in this study, demonstrating through experimental and simulation studies that multilayer MoS2 has better mechanical strain capability than monolayer MoS2, showing great potential in applications for electronic skin.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mao Wang et al.
Summary: The occurrence of mid-infrared localized surface plasmon resonances (LSPR) in thin Si films hyperdoped with tellurium (Te) is demonstrated in this study. By fabricating two-dimensional arrays of micrometer-sized antennas in a Te-hyperdoped Si chip, the mid-infrared LSPR can be further enhanced and extended to the far-infrared range. This finding opens up the possibility of integrating plasmonic sensors with the on-chip CMOS platform, greatly advancing the mass manufacturing potential of high-performance plasmonic sensing systems.
Article
Materials Science, Multidisciplinary
Yuanyuan Cui et al.
Summary: The optical and electrical properties of 2D VS2 doped with different elements were investigated. It was found that the conductivity and reflectivity of VS2 can be modified by different dopants. Additionally, certain dopants can reduce the energy barrier of Li atom migration in VS2, which may benefit the design of high-rate rechargeable Li-ion batteries.
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Haixin Ma et al.
Summary: A highly sensitive and broad-spectrum photodetector based on InSe/ReS2 vertical heterostructure is reported, featuring high detectivity and excellent performance metrics, indicating promising potential in the field of photodetection.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Manh Hoang Tran et al.
Summary: A high-quality ZrBDC thin film was successfully fabricated using a liquid-phase epitaxy method, showing great potential for UV detection applications. The film was utilized in a visible-blind UV photodetector, demonstrating efficient photo-absorption properties with high specific detectivity and fast response time.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Qiaojue Ye et al.
Summary: Large-scale 2D ZIS nanofilms were successfully produced using pulsed laser deposition (PLD) followed by post-deposition annealing. The resulting ZIS photodetectors exhibited outstanding photosensitivity, high stability, and robustness to high temperatures.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Zhiyong Chen et al.
Summary: High-performance nonplanar UV-Vis-NIR broadband photodetector arrays based on wafer-scale, vertical-structured SnSe2 nanosheet arrays have been developed via low-temperature molecular beam epitaxy method. These arrays exhibit a high light absorption efficiency of >90% and show superior performance in responsivity, speed, and uniformity. In addition, the responsivity of the arrays is further improved through Zn-doping technique.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Mingfa Peng et al.
Summary: Two-dimensional layered transition metal dichalcogenides (TMDs) have been widely used in electronics and optoelectronic devices, but their low light absorption ability and narrow spectra range limit their potential in high-performance optoelectronics. In this study, a high-performance PbSe/2D MoS2 heterostructure photodetector was successfully developed by integrating air-stable semiconductor PbSe nanocrystal ink with 2D MoS2. The PbSe/MoS2 photodetector showed improved responsivity, detectivity, and stability compared to pristine 2D MoS2 photodetectors, and maintained high performance in the near-infrared light region.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Analytical
Yang Yue et al.
Summary: High-temperature annealing in a nitrogen atmosphere was used to improve the quality of magnetron-sputtered AlN films with different polarities. Crystal quality of the films was improved by annealing at 1400-1650 degrees C, but there were differences in quality between non-polar and polar films. Non-polar films were more easily improved by annealing compared to semi-polar films. The annihilation of impurities and grain boundaries during the annealing process contributed to the improvement in crystal quality and the differences between films with different polarities.
Article
Chemistry, Multidisciplinary
Dingdong Xie et al.
Summary: In this work, a novel polarization-perceptual neuro-transistor with reconfigurable anisotropic vision is proposed based on a two-dimensional ReS2 phototransistor. The device exhibits excellent photodetection ability and superior polarization sensitivity, and successfully realizes polarization memory consolidation and reconfigurable visual imaging. Potential applications for polarized navigation and three-dimensional visual polarization imaging are also demonstrated.
MATERIALS HORIZONS
(2022)
Review
Chemistry, Multidisciplinary
Jiandong Yao et al.
Summary: The alloying of 2D layered materials significantly expands the material family and opens up new research areas. This review comprehensively explores synthetic technologies and recent advances, demonstrating the potential of 2DLM alloys in electronic and optoelectronic devices.
Article
Chemistry, Physical
Jianting Lu et al.
Summary: This study proposes an ingenious dielectric engineering strategy to enhance the photosensitivity of 2D materials-based photodetectors, achieving significant performance improvement. The optimized SiO2/STO(300 nm)-WSe2 photodetector shows dramatically increased responsivity, external quantum efficiency, and detectivity, promising reliable weak light detection. This strategy has been successfully applied to WS2 photodetectors as well, demonstrating broad applicability and highlighting the role of dielectric environment in improving 2D materials-based photodetectors.
Article
Chemistry, Multidisciplinary
Xin Guo et al.
Summary: The 2D heterostructure of vertically aligned SnS2 nanoplates anchored on a graphene aerogel shows high performance in sodium-ion batteries, with excellent rate capability and long cycling stability. The unique structure effectively addresses the issue of long and tortuous ion transport paths in traditional horizontal structures, leading to boosted electrochemical reaction kinetics and enhanced structural stability.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Nanoscience & Nanotechnology
Ling Jiang et al.
Summary: This article introduces a defect-predesigned strategy to produce MoS2 with single-atomic S vacancies by preparing Se-doped MoS2 and subsequent removing the Se. The results show that MoS2 with an optimal concentration of S vacancies exhibits outstanding HER performance.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yuan Pan et al.
Summary: This study identifies promising new two-dimensional material γ-InSe with low-symmetry structures for developing monolithic polarization-sensitive photodetectors. A superior responsivity polarization-sensitive photodetector based on multilayer γ-InSe is constructed, showing high efficiency of light absorption, excellent carrier mobility, and exceptional responsivity under polarized light. These findings provide insights into in-plane anisotropic properties of 2D materials and propose a stable and environmentally friendly candidate for anisotropic optoelectronic applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Tingting Yan et al.
Summary: This study presents an ultraflexible all-organic photodetector with high responsivity and stable performance, capable of outputting steady biosignals in specific applications. By introducing symmetrical organic electrodes, this photodetector exhibits dual-polarity photocurrent when flipped or folded.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xiankun Zhang et al.
Summary: This study reported a van-der-Waals barrier-free hole contact between p-type tellurene semiconductor and layered 1T'-WS2 semimetal, achieving a zero Schottky barrier height and high field-effect mobility, providing a feasible strategy for eliminating the Schottky barrier of metal-semiconductor contacts.
ADVANCED MATERIALS
(2022)
Article
Physics, Applied
Alper Sahin et al.
Summary: An nBn type InGaAs photodetector structure operating at 2 μm with dual-band operation capability has been numerically designed and experimentally characterized. The results show that the detector has high quantum efficiency and low dark current.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Lin Zhang et al.
Summary: A series of large-area, flexible and transparent ultraviolet photodetectors based on Ag nanowire@ZnO nanorods were fabricated using an inexpensive and effective approach. The optimized detectors exhibited excellent photoresponse and short response time under UV light illumination, along with good transmittance in the visible light region, flexibility, and mechanical stability.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Shuai Liu et al.
Summary: The study demonstrates the high-performance FET based on SnSe, showing excellent electrical properties with a high on/off ratio and carrier mobility.
Article
Materials Science, Multidisciplinary
Ling-Xuan Qian et al.
Summary: In this study, well-defined Al@AlO3 core-shell nanostructure arrays with sub-50 nm feature sizes, narrow dimension distributions, periodic graphene-like patterns, and extremely high densities up to 152.7 counts µm(-2) were fabricated. The beta-Ga2O3 PDs decorated with these nanostructures showed significantly enhanced sensitivities without response spectra broadening. Finite-difference time-domain simulations based on isolated, dimer, and arrayed models confirmed the presence of LSPR and the critical contribution of nanostructure density.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jie Qiao et al.
Summary: This study demonstrates the integration of all-dielectric TiO2 metalenses based on the Fresnel diffraction effect with molybdenum ditelluride (MoTe2) photodetectors, leading to the optimized optoelectrical properties of 2D materials and excellent photodetection performance.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Mengfan Ding et al.
Summary: This study demonstrates the fabrication of flexible and heat-resistant gallium oxide deep-ultraviolet photodetectors using optimized inkjet printing. The photodetectors exhibit outstanding performance on both rigid and flexible substrates, making them highly promising for space exploration and wearable electronics.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Enver Faella et al.
Summary: In this study, we report the fabrication and optoelectronic characterization of field-effect transistors (FETs) based on few-layer ReSe2. The optoelectronic performance of these FETs is strongly influenced by air pressure, showing a significant increase in conductivity when the pressure is lowered below atmospheric pressure. Additionally, the FETs based on ReSe2 can serve as an effective air pressure gauge due to the doping effect of surface-adsorbed oxygen and water molecules. Negative photoconductivity is observed in the ReSe2 channel, which is attributed to the trapping of photo-excited charges depending on the back-gate voltage.
Article
Chemistry, Multidisciplinary
Jitao Li et al.
Summary: This research demonstrates that trap states in 2D MoS2 can be efficiently modulated by defect engineering through mild oxygen plasma treatment, significantly accelerating the response time of the photodetectors. Under the optimal processing conditions, enhancements in photoluminescence intensity and carrier field-effect mobility were observed, resulting in significantly reduced rise and fall response times.
Article
Chemistry, Multidisciplinary
Shichen Xu et al.
Summary: This study reports a chloroform-assisted method for rapid growth of vertical graphene (VG) arrays in an electric field-assisted plasma enhanced chemical vapor deposition (PECVD) system, aiming to improve the thermal conductivity of graphene-based composite thermal interface materials (TIMs). The experimental results indicate that under the optimum intensity and direction of the electric field, and by introducing highly electronegative chlorine into the reactor, a record growth rate and a successful synthesis of 100 μm high VG are achieved. The theoretical study reveals, for the first time, that the introduction of chlorine can accelerate the decomposition of methanol and thus promote the growth of VG. Finally, a free-standing composite TIM using VG arrays as an excellent filler framework in a polymer matrix is constructed, which exhibits a high vertical thermal conductivity and an excellent cooling effect in the interfacial thermal dissipation of a light emitting diode.
Article
Materials Science, Multidisciplinary
Gonglei Shao et al.
Summary: In this study, sulfur atoms were accurately knocked out in the two-dimensional basal plane of SnS2, leading to the formation of SnS2 with different sulfur vacancy concentrations. The SnS2 material with a sulfur vacancy concentration of 30.5% exhibited excellent catalytic performance in the hydrogen evolution reaction. Computation results confirmed the significant impact of sulfur vacancies on surface charge modulation and electronic conductivity.
SCIENCE CHINA-MATERIALS
(2022)
Review
Chemistry, Physical
Wen Yang et al.
Summary: This paper provides an up-to-date review of recent research progress on new 2D UWBG semiconductor materials and their novel physical properties. The widespread applications of 2D UWBG semiconductors, such as in transistors and photodetectors, and the existing challenges and opportunities in this field are highlighted.
Article
Materials Science, Multidisciplinary
Yong Zhang et al.
Summary: The integration of filter membrane and Ca2Nb3O10 nanosheets (FM@CNO) UV photodetector shows high performance and flexibility. The Ca2Nb3O10 nanosheets were prepared through a simple reaction and exfoliation process, and integrated into the filter membrane via vacuum filtration. The FM@CNO UV PD exhibits high responsivity, detectivity, UV/visible rejection ratio, and fast speed under 300 nm light illumination at 5 V bias. Additionally, the device remains flexible after bending cycles and can be used for UV imaging.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Akhil Dodda et al.
Summary: The authors report a small-footprint APS matrix based on monolayer MoS2 phototransistors arrays exhibiting spectral uniformity, reconfigurable photoresponsivity and de-noising capabilities at low energy consumption. This technology utilizes gate-tunable persistent photoconductivity to achieve high responsivity.
Article
Physics, Applied
M. Asgari et al.
Summary: Graphene possesses unique optoelectronic properties ideal for developing photonic devices, especially in the terahertz frequency range. Researchers have successfully fabricated room temperature THz detectors using large-area single-layer graphene grown by chemical vapor deposition, integrated in antenna-coupled field effect transistors. Through different dielectric configurations, they achieved fast response times of 5 ns and low noise equivalent powers of 1 nW Hz(-1/2) under zero-bias operation.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Kedhareswara Sairam Pasupuleti et al.
Summary: In this study, a self-powered UV PD based on Pt nanoparticles decorated TiO2/GaN nanorods hybrid heterojunction was developed. The hybrid PD showed high photoelectric performances and short response time, making it suitable for optoelectronic applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Shifan Wang et al.
Summary: This study demonstrates the potential application of layered black phosphorus photodetectors in photonic circuits. These detectors show fast response, high sensitivity, and low noise detection over a wide range of optical wavelengths, and can characterize the response of other photonic components in real time.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Physical
Kai Chen et al.
Summary: This study reports a hot-hole injection enhanced self-powered UV photodetector based on a trapezoidal PIN GaN microwire modified with Au nanoparticles on a patterned sapphire substrate. The efficient injection of hot holes and enhanced light scattering of plasmonic Au nanoparticles, combined with a patterned substrate, considerably improve the performance of the photodetector.
Article
Materials Science, Multidisciplinary
Rui Tao et al.
Summary: This study demonstrates the tunability of photoresponse and excellent photodetection capability by constructing a MoS2 homojunction. Nb doping induces p-type doping in MoS2, significantly enhancing the photoresponse and detectivity. The research not only reveals the tunable photoexcitation mechanism but also provides a strategy for achieving high-performance photodetectors.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yue Zhang et al.
Summary: The researchers propose an effective strategy to improve the responsivity and response speed of 2D LMPC-based UV photodetectors by sensitizing them with a 2D RP perovskite. The hybrid heterojunction photodetectors exhibit high responsivity, large detectivity, and fast response time.
NANOSCALE HORIZONS
(2022)
Article
Materials Science, Multidisciplinary
Aaron H. Rose et al.
Summary: The electronic and optical properties of transition-metal dichalcogenides make them an intriguing platform for studying strong light-matter interactions. In this paper, a new approach utilizing the large oscillator strength of FL-MoS2 C excitons is taken to achieve a k-space Rabi splitting of 293 meV at room temperature. This system, placed in the ultrastrong coupling regime, shows promise for efficient quantum coherent processes in the visible spectrum.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yuankun Lin et al.
Summary: Stimulated emission from defects in annealed multilayer MoS2 is observed and characterized using photoluminescence spectroscopy, Raman spectroscopy, and first-principles calculations. The results show an anomalous intensity-temperature relation and strong polarization effects, suggesting defect-based stimulated emission. The behavior of stimulated emission is found to be controllable and reversible.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Rajendra K. Saroj et al.
Summary: A study on the selective growth of hexagonal GaSe film on prepatterned graphene substrate and fabrication of photodetector array is presented. The growth behavior of GaSe and the performance of the fabricated GaSe-based photodetectors are investigated. The findings reveal the potential applications of GaSe in optoelectronic devices.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Xubiao Li et al.
Summary: This study presents the systematic design and fabrication of localized surface-plasmon resonance (LSPR) enhanced D18:Y6 organic photodetector (OPD) using uniform Ag nanocubes (AgNCs) deposited on the organic photoactive layer. The enhanced device showed a 25-fold enhancement in responsivity and detectivity compared to the pristine device. The COMSOL Physics simulation confirmed the amplification and concentration of electric field within the organic film. The study provides a new approach to enhance the photoresponse of next-generation NIR OPDs.
ADVANCED OPTICAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Rui Cao et al.
Summary: This article summarizes the recent progress and potential of 2D materials in mid-infrared optoelectronic devices. The limitations of graphene are mentioned. The authors believe that research on 2D materials beyond graphene will soon emerge and make a positive contribution to the commercialization of nanodevices.
Article
Chemistry, Physical
Xiao-Ying Fu et al.
Summary: Honeycomb-like MoSe2@reduced graphene oxide (RGO) composites were successfully constructed using a one-step solvothermal method, exhibiting properties of multi-band absorption. The optimized composite showed excellent microwave absorption performance, making it suitable for the development of efficient multifunctional EM wave absorbers.
Article
Materials Science, Multidisciplinary
Yuchao Wei et al.
Summary: This study successfully synthesized a Bi2O2Se nanoribbon and achieved a fast response and low noise photodetector by applying a Schottky barrier between the Bi2O2Se and Au electrodes. The device has low dark current and fast response time, providing new opportunities for high-performance VIS-NIR photodetectors.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Chen Zhao et al.
Summary: High quality factor (Q-factor) resonance can enhance light-matter interactions, but fabrication imperfections and material impurities limit its performance. Manipulating merging bound states in the continuum (BICs) by electrically tuning material properties offers a solution for optimizing on-chip photonic devices.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Qiao Cu et al.
Summary: The study synthesized MoSe2 nanoflowers dispersed on one-dimensional N-doped carbon nanofibers as a freestanding electrode, effectively addressing issues such as selenium dissolution and capacity decrease. Experimental results demonstrate that MoSe2@NCNFs exhibit excellent performance in lithium and sodium storage applications, making them a promising candidate for reversible Li/Na storage applications.
Article
Nanoscience & Nanotechnology
Pablo Ares et al.
Summary: The isolation and study of graphene as the first two-dimensional material has opened up new possibilities in the field of condensed matter physics and materials. Its stable and outstanding properties have led to the exploration of a whole new family of materials known as two-dimensional materials or 2D materials. The combination of 2D crystals allows the creation of composite materials with unique functionalities, enabling the study of new challenges in fundamental physics and the development of novel applications.
NANO MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Sangmoon Han et al.
Summary: The researchers have successfully developed a self-powered image array composed of 16 touch-free sensors made with InN nanowires. These sensors can detect the position of a human hand 30 cm away from the device surface without using a power supply. They can also distinguish different materials in non-contact mode and have the potential for detecting changes in the surface texture of human skin.
MATERIALS HORIZONS
(2022)
Article
Chemistry, Multidisciplinary
Jiawei Jiang et al.
Summary: This study investigates the modulation of exchange interactions in layered magnets and their applications in two-dimensional magnets. The results highlight the importance of nearest-neighbor and higher-order exchange interactions in describing the magnetism and thermal stability. The manipulation methods involving the adsorption of alkali metal lithium and the electride Ca2N substrate have been proposed to control the magnetic interactions and magnetic ground states.
MATERIALS HORIZONS
(2022)
Article
Materials Science, Multidisciplinary
Lin Ye et al.
Summary: Efficient water splitting for H-2 evolution over semiconductor photocatalysts is highly attractive in the field of clean energy. Constructing a direct Z-scheme nanocomposite photocatalyst can effectively separate the photo-generated carriers to enhance the photocatalytic performance. In this study, Z-scheme hydrated tungsten trioxide/ZnIn2S4 was fabricated using an in-situ hydrothermal method, demonstrating excellent photocatalytic hydrogen production.
Article
Chemistry, Multidisciplinary
Qiaojue Ye et al.
Summary: This study achieved a highly sensitive SnS/ZIS photodetector using pulsed-laser deposition technology, solving the problems of low light absorption and limited carrier lifetime. This research is of great significance for the development of chip-scale integrated optoelectronic devices.
MATERIALS HORIZONS
(2022)
Article
Chemistry, Multidisciplinary
Zhan-Peng Wang et al.
Summary: This study creatively explores the use of exfoliated multilayer tungsten diselenide (WSe2) to break the limitation of channel thickness in traditional architecture for 1T0C DRAM. The essential role of the floating body effect in achieving the function of 1T0C DRAM is demonstrated through electrical characteristic comparison and analysis. The injection of holes through band-to-band tunneling is found to be modulated electrostatically.
MATERIALS HORIZONS
(2022)
Article
Chemistry, Multidisciplinary
Chanho Shin et al.
Summary: This study presents a new interlayer design that simultaneously achieves photomultiplication and suppresses dark current in organic shortwave infrared detectors, improving the overall detectivity. The new design is generalizable to work with different organic semiconductors, making it attractive and easy to integrate with emerging organic infrared systems.
MATERIALS HORIZONS
(2022)
Article
Engineering, Electrical & Electronic
Gang Li et al.
Summary: In this study, a MoS2 photodetector modified by double-layered Au nanoparticles is designed and fabricated for sensitive detection of visible light. The double-layered Au nanoparticles enhance the light absorption and local electric field of MoS2, leading to superior optoelectronic performance compared to MoS2 modified with single-layered Au nanoparticles. The photodetector exhibits high photoresponsivity, specific detectivity, and fast response speed.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Haoran Mu et al.
Summary: This review introduces the opportunities of black phosphorus as an emerging 2D material in optoelectronics and photonics, and highlights the importance of high-quality interface and surface engineering in BP-based applications.
Article
Physics, Applied
Yajie Yang et al.
Summary: A high-responsivity PtSe2 photodetector (5x10(4) A/W) was achieved through the photogating effect induced by hole-trapping states attributed to Se vacancies. Additionally, a gate-tunable transition between positive and negative photoconductances was observed under light illumination. Theoretical calculations based on the Boltzmann transport theory were used to explain the carrier transport of PtSe2, taking into account the contributions of charged impurity, acoustic phonon, and polar optical phonon scattering.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Santhosh Durairaj et al.
Summary: Introducing trace oxygen during the growth of MoS2 can eliminate defect-related bound exciton emission and enhance photoluminescence by about 300%. Additionally, sulfur vacancies in monolayer MoS2 films lead to unusual splitting of the first-order A(1g) Raman mode when not compensated by oxygen.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Zegao Wang et al.
Summary: By introducing an rGO buffer layer in MoS2 transistors, van der Waals contacts can be formed effectively, leading to a significant improvement in device performance.
MATERIALS TODAY PHYSICS
(2021)
Review
Chemistry, Multidisciplinary
Qinxi Qiu et al.
Summary: 2D materials are considered promising for photodetectors due to their unique properties, but limitations such as low quantum efficiency, noise, and slow response are caused by their thinness. Current research focuses on improving the performance of 2D material photodetectors, but balancing sensitivity and response speed remains challenging.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Nima Sefidmooye Azar et al.
Summary: This study demonstrates long-wave infrared (LWIR) photodetectors based on multilayer PtSe2, which show high responsivities and fast response characteristics at LWIR wavelengths. The design of an optical cavity substrate enhances the light-matter interaction in 2D materials, improving their photodetection performance in the LWIR spectral region.
Article
Materials Science, Multidisciplinary
Yan Zhang et al.
Summary: High-quality Ta2NiSe5 was synthesized by CVT, and a broadband photodetector with fast response, high responsivity, and excellent stability was fabricated. The device showed promise in the field of neotype electronics and optoelectronics.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Chao Xie et al.
Summary: A facile method for the growth of high-quality beta-Ga2O3 thin films and assembly into a photodetector array has been reported. The array exhibits outstanding photoresponse performance and good spatial resolution under 265nm DUV illumination, showing potential for multifunctional DUV optoelectronic applications.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Subhrajit Mukherjee et al.
Summary: Integrating plasmonic Au nanostructures as a light harvester on two-dimensional MoS2 layers enhances light-matter interactions, leading to increased optical absorption and Raman scattering intensity. The metal-induced doping in MoS2 and enhancement of electromagnetic field through localized surface plasmon resonance at the Au/MoS2 interface are confirmed, with the hybrid nanostructures showing significantly improved carrier lifetime and photodetection performance. Fabricated metal-semiconductor-metal photodetectors exhibit promising broadband and multicolor photodetection capabilities for large area 2D materials-based nanophotonic devices.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Hao-Yu Lan et al.
Summary: Monolayer transition metal dichalcogenides have low total absorption of photons, hindering the realization of high-performance optoelectronic functionalities. Gate-tunable plasmonic photoFETs show potential for enhancing photoresponsivity and photocurrent in monolayer MoS2, providing a systematic methodology for designing ultrathin plasmon-enhanced photodetectors for future compact optoelectronic devices.
Article
Chemistry, Multidisciplinary
Hang Yan et al.
Summary: Two-dimensional organic crystals show promising potential for high-performance nanoelectronics, but are limited by strong Fermi level pinning effects and large Schottky barriers between organic semiconductors and metals. By introducing 2D metallic 1T-TaSe2 with matched band-alignment as electrodes, enhanced field-effect characteristics and improved optoelectronic performance of F16CuPc nanoflake-based phototransistors are achieved, surpassing reported organic photodetectors and phototransistors.
Article
Chemistry, Multidisciplinary
Xinke Liu et al.
Summary: The study demonstrates an effective method for enhancing the optical properties of photodetectors, enabling simultaneous detection of broad-spectrum emissions.
Article
Multidisciplinary Sciences
Dehui Zhang et al.
Summary: In recent years, new approaches to optical imaging have rapidly evolved, with a focus on extracting three-dimensional information from traditionally two-dimensional image capture. The integration of transparent focal stack imaging systems using graphene photodetector arrays with advanced neural networks has enabled real-time 3D optical imaging and object tracking, showcasing promising new frontiers in imaging technology.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Applied
Andrey Guskov et al.
Summary: The study reveals a 10-fold enhancement in photosensitivity of photodetectors based on 2D semiconductor WSe2 due to ordered silver plasmonic structures. This enhancement is achieved by increasing the electric field from local plasmon excitation.
APPLIED PHYSICS EXPRESS
(2021)
Article
Chemistry, Physical
Dae Hyun Kim et al.
Summary: A novel ALD chemical route was proposed for uniform monolayer MoS2 film deposition at the wafer scale, exhibiting excellent uniformity and higher luminescence quantum efficiency compared to conventional ALD methods.
CHEMISTRY OF MATERIALS
(2021)
Article
Multidisciplinary Sciences
Lei Tong et al.
Summary: In this study, a novel device architecture combining tungsten diselenide and lithium niobate is proposed for use as a nonlinear transistor and nonvolatile memory. Based on this homogeneous architecture, an integrated system for binary classification and ternary content-addressable memory design for neuromorphic hardware is also investigated.
Article
Chemistry, Multidisciplinary
Xiaoli Sun et al.
Summary: A novel design for 2D photodetectors with enhanced photoresponsivity by non-contact plasmonic nanoparticles (NPs) is proposed in this research. The introduction of Ag NPs into a hybrid structure successfully enhances optical absorption, resulting in an 881 times improvement in responsivity of the photodetector.
Proceedings Paper
Materials Science, Multidisciplinary
M. M. Juvaid et al.
Summary: 2D materials have attracted research interest since the discovery of Graphene, with transition metal dichalcogenides (TMDs) holding promise due to their intrinsic bandgap. MoS2 and WS2, as TMDs, have been extensively studied for their bandgap and high carrier mobility. Various growth mechanisms, including physical vapour deposition techniques like pulsed laser deposition (PLD), have been developed for the realization of 2D materials.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Materials Science, Multidisciplinary
Liang Chen et al.
Summary: Hot-electron injection induced by plasmon decay enables ultrafast electron transfer in metallic nanoparticles, with palladium nanoparticles showing promising potential for high-speed optoelectronics due to their higher density of states next to the Fermi level. Confocal Kelvin probe force microscopy was used to investigate the optical properties of Pd NPs and plasmon induced hot-electron injection, which was found to initiate dense hot-electron transfer in the visible range. The result confirms the energetic Pd hot electrons in the visible range for photoelectric applications.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Xu Han et al.
Article
Nanoscience & Nanotechnology
Nikolaus Flory et al.
NATURE NANOTECHNOLOGY
(2020)
Article
Nanoscience & Nanotechnology
Yusuf Kocak et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
Tsung-Han Tsai et al.
Article
Chemistry, Multidisciplinary
Qijie Liang et al.
Article
Chemistry, Multidisciplinary
Qinghua Zhao et al.
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Haoliang Wang et al.
ADVANCED OPTICAL MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Kyrylo Greben et al.
Article
Multidisciplinary Sciences
Leilei Gu et al.
Article
Materials Science, Multidisciplinary
Yuan-Fei Gao et al.
PHYSICAL REVIEW MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
Xuge Fan et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
Review
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