Work-Function-Tunable MXenes Electrodes to Optimize p-CsCu2I3/n-Ca2Nb3-xTaxO10 Junction Photodetectors for Image Sensing and Logic Electronics

Article Chemistry, Multidisciplinary

High-Yield Ti3C2Tx MXene-MoS2 Integrated Circuits

Xiangming Xu et al.

Summary: This study demonstrates the potential of solution-processed Ti3C2Tx MXene films in large-area 2D nanoelectronics and successfully integrates them into MoS2 transistor circuits, achieving high yield and stable performance.

ADVANCED MATERIALS (2022)

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Article Nanoscience & Nanotechnology

Cesium Copper Iodide Perovskite Nanoscale-Thick Films with Tunable Photoluminescence for White Light-Emitting Diodes

Xiaoxuan Li et al.

Summary: Cu-based halide perovskite derivatives (PDs) have gained attention for their low toxicity, high stability, and abundant source. Cs-Cu-I nanoscale-thick films with excellent air stability exhibit tunable photoluminescence characteristics and have promising potential applications in white light and short-wavelength light-emitting device technologies, showing standard white emission under excitation by a UV LED.

ACS APPLIED NANO MATERIALS (2022)

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Article Materials Science, Multidisciplinary

Switch type PANI/ZnO core-shell microwire heterojunction for UV photodetection

Yihan Chen et al.

Summary: In this study, single crystal ZnO microwires were prepared through chemical vapor deposition, and p-type conducting polyaniline polymers were coated on the surface to construct organic/inorganic heterojunction photodetectors. The devices exhibited high rectification ratio, strong response to UV radiation, and the ability to operate as self-powered photodetectors.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2022)

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Article Chemistry, Multidisciplinary

Modulation of the Electronic Properties of MXene (Ti3C2Tx) via Surface-Covalent Functionalization with Diazonium

Hongyue Jing et al.

Summary: The paper demonstrates the chemical modification of Ti3C2Tx MXene via diazonium covalent chemistry and the subsequent effects on the electrical properties of MXene. The work function of functionalized MXene can be modulated by adjusting the concentration of the diazonium salt solution, with an adjustable range of around 0.6 eV. The controlled modification of surface groups in Ti3C2Tx may imbue Ti3C2Tx with favorable electronic behaviors, showing prospects for electronic field applications.

ACS NANO (2021)

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Article Chemistry, Multidisciplinary

High-Performance Two-Dimensional Perovskite Ca2Nb3O10 UV Photodetectors

Yong Zhang et al.

Summary: The research team successfully prepared two-dimensional perovskite Ca2Nb3O10 ultraviolet photodetectors with high performance and stability, demonstrating excellent photoelectric properties and applicability, providing valuable reference for the research of next-generation high-performance UV PDs.

NANO LETTERS (2021)

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Article Chemistry, Multidisciplinary

All-Solution-Processed Quantum Dot Electrical Double-Layer Transistors Enhanced by Surface Charges of Ti3C2Tx MXene Contacts

Hyunho Kim et al.

Summary: Fully solution-processed, large-area electrical double-layer transistors (EDLTs) utilizing PbS colloidal quantum dots (CQDs) as active channels and Ti3C2Tx MXene as electrical contacts demonstrated high performance with a large electron saturation mobility of 3.32 cm(2) V-1 s(-1) and current modulation of 1.87 x 10(4). MXene's negative surface charges were found to enhance cation accumulation, achieving a low threshold voltage of 0.36 V. These results suggest a promising potential for MXene electrical contacts.

ACS NANO (2021)

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Article Chemistry, Multidisciplinary

Boosted Responsivity and Tunable Spectral Response in B-Site Substituted 2D Ca2Nb3-xTaxO10 Perovskite Photodetectors

Xinya Liu et al.

Summary: The study explored the use of B-site substitution to prepare 2D calcium niobate nanosheets with tunable spectral response and optimized responsivity in photodetectors. However, excessive substitution was found to negatively impact responsivity and response speed.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Multidisciplinary Sciences

Interfacial engineering of Bi2S3/Ti3C2Tx MXene based on work function for rapid photo-excited bacteria-killing

Jianfang Li et al.

Summary: An interfacial Schottky junction of Bi2S3/Ti3C2Tx has been designed to improve photocatalytic activity by increasing local electron density and inhibiting electron backflow, effectively eradicating Staphylococcus aureus and Escherichia coli.

NATURE COMMUNICATIONS (2021)

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Article Multidisciplinary Sciences

Flexible and high-performance electrochromic devices enabled by self-assembled 2D TiO2/MXene heterostructures

Ran Li et al.

Summary: Transition metal oxides (TMOs) are promising electrochromic (EC) materials for applications such as smart windows and displays, but achieving good flexibility, high coloration efficiency and fast response simultaneously remains a challenge. MXenes and their derived TMOs are good candidates for high-performance and flexible EC devices due to their 2D nature and the possibility of assembling them into loosely networked structures. The authors demonstrate flexible, fast, and high-coloration-efficiency EC devices based on self-assembled 2D TiO2/Ti3C2Tx heterostructures, with the Ti3C2Tx layer as the transparent electrode and the 2D TiO2 layer as the EC layer.

NATURE COMMUNICATIONS (2021)

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Review Nanoscience & Nanotechnology

MXenes for Solar Cells

Lujie Yin et al.

Summary: The application of two-dimensional MXene materials in photovoltaics has attracted attention for their unique properties, and this review focuses on the development and applications of Ti3C2Tx MXene in solar cells. Existing problems are discussed and suggestions for further exploration are provided to advance the research in this area.

NANO-MICRO LETTERS (2021)

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Article Chemistry, Multidisciplinary

2D MXene-Molecular Hybrid Additive for High-Performance Ambipolar Polymer Field-Effect Transistors and Logic Gates

Hanlin Wang et al.

Summary: MXenes are highly conductive layered materials that can be functionalized to enhance electron mobility in conjugated polymers and 2D materials, resulting in unprecedented performance and functionality for polymer transistors. Intercalant engineering represents an efficient strategy to tune the electronic properties of MXenes, leading to the fabrication of high-performance opto-electronics and energy applications.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Tuning an Electrode Work Function Using Organometallic Complexes in Inverted Perovskite Solar Cells

Jiantao Wang et al.

Summary: In this study, synthesized organometallic complexes were utilized as cathode interlayers to tune the work function of the electrode, resulting in improved power conversion efficiency and long-term stability of perovskite solar cells. Experimental results demonstrated significant enhancement in PCE and stability for both Ag and Au cathodes modified with these complexes.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Bio-Inspired Photoelectric Artificial Synapse based on Two-Dimensional Ti3C2Tx MXenes Floating Gate

Tianshi Zhao et al.

Summary: This paper proposes a photoelectronic transistor that mimics biological synaptic behaviors and demonstrates its typical synaptic behaviors and reliable memory stability through voltage testing. The UV-responsive synaptic properties of the MXenes floating gated transistor and its applications are measured and realized for the first time, showing great potential in bio-imitation vision applications. Through simulation based on an artificial neural network algorithm, the device successfully achieves recognition of handwritten digital images, providing a highly feasible solution for applying artificial synaptic devices to hardware neuromorphic networks.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Self-Powered MXene/GaN van der Waals Heterojunction Ultraviolet Photodiodes with Superhigh Efficiency and Stable Current Outputs

Weidong Song et al.

Summary: A self-powered, high-performance Ti3C2Tx MXene/GaN van der Waals heterojunction-based ultraviolet photodiode with outstanding quantum efficiency and rapid response speed is reported, showing remarkable photovoltaic behavior and power conversion efficiency.

ADVANCED MATERIALS (2021)

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Editorial Material Materials Science, Ceramics

A decade of discovery: A review of MXenes, the family of 2D transition metal carbides and nitrides

Yury Gogotsi

AMERICAN CERAMIC SOCIETY BULLETIN (2021)

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Article Materials Science, Multidisciplinary

Enhanced Responsivity of CsCu2I3 Based UV Detector with CuI Buffer-Layer Grown by Vacuum Thermal Evaporation

Xiaoyu Zhou et al.

Summary: Cu-based perovskite CsxCuyIx+y thin films were deposited using vacuum thermal evaporation, with CuI as a buffer layer to improve the quality and optoelectronic properties of CsCu2I3 films. Metal-semiconductor-metal UV detectors based on CsCu2I3 films showed enhanced photoresponse performance compared to devices without the CuI buffer layer, with peak responsivity and specific detectivity significantly higher.

ADVANCED OPTICAL MATERIALS (2021)

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Review Physics, Applied

Self-powered UV photodetectors based on ZnO nanomaterials

Weixin Ouyang et al.

Summary: This review outlines recent research on different types of self-powered UV photodetectors based on ZnO, discussing the application of ZnO nanostructures and their influence on modulating the photo-response. The versatile applications of these photodetectors in various fields are displayed, along with proposed opportunities and directions for future developments.

APPLIED PHYSICS REVIEWS (2021)

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Article Chemistry, Physical

Lead-Free Halide Light-Emitting Diodes with External Quantum Efficiency Exceeding 7% Using Host-Dopant Strategy

Gijun Seo et al.

Summary: Lead-free halide light-emitting diodes (LEDs) utilizing CsCu2I3 achieve strong yellow emission, with extremely thin host-dopant emitters formed by VTE process to enhance photoluminescence quantum yield. By successful spatial localization of charge carriers and excitons, a record-breaking lead-free halide LED with EQE of 7.4% is fabricated, demonstrating high stability in device operation.

ACS ENERGY LETTERS (2021)

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Review Multidisciplinary Sciences

The world of two-dimensional carbides and nitrides (MXenes)

Armin Vahid Mohammadi et al.

Summary: MXenes, a family of two-dimensional materials, have diverse properties and wide-ranging applications in areas such as optics, catalysis, sensing, and medicine. Future research directions will focus on deepening the fundamental understanding of MXenes properties and exploring their potential for hybridization with other 2D materials.

SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Nonlinear Work Function Tuning of Lead-Halide Perovskites by MXenes with Mixed Terminations

Alessia Di Vito et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Recent Advances in 2D MXenes for Photodetection

Hao Xu et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Facet-Dependent, Fast Response, and Broadband Photodetector Based on Highly Stable All-Inorganic CsCu2I3 Single Crystal with 1D Electronic Structure

Ziqing Li et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

A 2D Titanium Carbide MXene Flexible Electrode for High-Efficiency Light-Emitting Diodes

Soyeong Ahn et al.

ADVANCED MATERIALS (2020)

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Article Chemistry, Physical

Raman Spectroscopy Analysis of the Structure and Surface Chemistry of Ti3C2Tx MXene

Asia Sarycheva et al.

CHEMISTRY OF MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Highly Efficient Electrochemical Reduction of Nitrogen to Ammonia on Surface Termination Modified Ti3C2Tx MXene Nanosheets

Ying Guo et al.

ACS NANO (2020)

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Article Multidisciplinary Sciences

Covalent surface modifications and superconductivity of two-dimensional metal carbide MXenes

Vladislav Kamysbayev et al.

SCIENCE (2020)

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Article Chemistry, Multidisciplinary

2D Transition Metal Carbides (MXenes): Applications as an Electrically Conducting Material

Faisal Shahzad et al.

ADVANCED MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Bio-inspired transparent MXene electrodes for flexible UV photodetectors

Jiaxin Chen et al.

MATERIALS HORIZONS (2020)

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Direct laser-patterned MXene-perovskite image sensor arrays for visible-near infrared photodetection

Aobo Ren et al.

MATERIALS HORIZONS (2020)

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Article Multidisciplinary Sciences

Control of MXenes' electronic properties through termination and intercalation

James L. Hart et al.

NATURE COMMUNICATIONS (2019)

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Article Chemistry, Physical

Surface Termination Dependent Work Function and Electronic Properties of Ti3C2Tx MXene

Thorsten Schultz et al.

CHEMISTRY OF MATERIALS (2019)

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Article Chemistry, Multidisciplinary

Nonvolatile MoTe2 p-n Diodes for Optoelectronic Logics

Chenguang Zhu et al.

ACS NANO (2019)

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Article Chemistry, Multidisciplinary

MXenes for Plasmonic Photodetection

Dhinesh Babu Velusamy et al.

ADVANCED MATERIALS (2019)

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Large-Area MXene Electrode Array for Flexible Electronics

Benzheng Lyu et al.

ACS NANO (2019)

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Beyond Gold: Spin-Coated Ti3C2-Based MXene Photodetectors

Kiana Montazeri et al.

ADVANCED MATERIALS (2019)

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Article Chemistry, Physical

Titanium-carbide MXenes for work function and interface engineering in perovskite solar cells

A. Agresti et al.

NATURE MATERIALS (2019)

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12.5% Flexible Nonfullerene Solar Cells by Passivating the Chemical Interaction Between the Active Layer and Polymer Interfacial Layer

Sixing Xiong et al.

ADVANCED MATERIALS (2019)

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Oxide Thin-Film Electronics using All-MXene Electrical Contacts

Zhenwei Wang et al.

ADVANCED MATERIALS (2018)

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Approaching the Schottky-Mott limit in van der Waals metal-semiconductor junctions

Yuan Liu et al.

NATURE (2018)

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Carbon nanotube-based three-dimensional monolithic optoelectronic integrated system

Yang Liu et al.

NATURE COMMUNICATIONS (2017)

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Review Nanoscience & Nanotechnology

Solution-processed semiconductors for next-generation photodetectors

F. Pelayo Garcia de Arquer et al.

NATURE REVIEWS MATERIALS (2017)

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MXene Electrode for the Integration of WSe2 and MoS2 Field Effect Transistors

Jiao Xu et al.

ADVANCED FUNCTIONAL MATERIALS (2016)

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Schottky-Barrier-Free Contacts with Two-Dimensional Semiconductors by Surface-Engineered MXenes

Yuanyue Liu et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2016)

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Solution-Processed LiF for Work Function Tuning in Electrode Bilayers

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NANO LETTERS (2012)

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A Universal Method to Produce Low-Work Function Electrodes for Organic Electronics

Yinhua Zhou et al.

SCIENCE (2012)

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Work-Function-Tunable MXenes Electrodes to Optimize p-CsCu2I3/n-Ca2Nb3-xTaxO10 Junction Photodetectors for Image Sensing and Logic Electronics

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