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Article
Chemistry, Physical
Blake P. Finkenauer et al.
Summary: In this work, combinations of amine and chalcogenide ligands were used to fabricate highly crystalline and oriented formamidinium lead iodide thin films with reduced defect densities and increased charge carrier lifetimes. The dual additives can tune the perovskite intermediate state and control the crystallization, leading to devices with improved efficiencies and stabilities. The results also indicate that the amine selection can be used to tune the surface properties.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Biochemistry & Molecular Biology
Darkhan Yerezhep et al.
Summary: IR spectroscopy is widely used due to its fast analysis and sensitivity, making it suitable for studying the degradation of perovskite thin films. This study investigated the degradation of CH3NH3PbI3-xClx thin films caused by atmosphere and light using scanning electron microscopy, IR spectroscopy, and optical absorption. The results showed that the degradation of the perovskite functional layer varied depending on the surrounding atmosphere, with chemical bonds maintained under nitrogen but degradation observed under ambient conditions due to hydration. This work highlights the adverse effects of water dissociation on the efficiency and stability of perovskite solar cells and provides insights for developing stable and sustainable alternatives.
Article
Chemistry, Multidisciplinary
Yuhao Peng et al.
Summary: In this study, all-inorganic cesium lead bromide polycrystalline films with grain size exceeding 1 μm were successfully created through a two-step sintering process. Compared to the one-step sintering process, the two-step process resulted in films with larger grain size, higher density, and lower trap density. Photovoltaic devices based on the two-step sintering process demonstrated enhanced efficiency and reduced hysteresis.
Review
Optics
Amir Arbabi et al.
Summary: Optical metalenses, which are arrays of submicrometre scatterers that collectively focus light, have gained increasing research interest due to their ability to realize conventional optical elements with novel functionalities. Their progress is driven by the demand for low-cost, high-performance miniaturized optical systems and is supported by advancements in nanofabrication and computational tools. This review discusses the capabilities of metalenses, such as their multifunctionality and efficient subwavelength focusing, and explores their potential applications and current state of the art. The outstanding challenges in the field are also highlighted, along with the application areas where metalenses could have a substantial impact.
Article
Engineering, Electrical & Electronic
Wei Xu et al.
Summary: In this paper, a tunable all dielectric perfect absorber based on hybrid graphene-dielectric metasurface is proposed to overcome the limitations of metal-based optical absorbers. The structure achieves perfect absorption at the wavelength of 9059 nm by exciting magnetic dipole and electric dipole modes that meet the condition for degenerate critical coupling, and the absorption can be dynamically adjusted by changing the Fermi energy of graphene film. The all dielectric structure exhibits polarization insensitivity and maintains good performance under wide angles of incidence, showing great potential in photovoltaic and thermal detection applications.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Optics
Neha Niharika et al.
Article
Nanoscience & Nanotechnology
Xiangang Luo
Summary: Replacing curved and bulky optical elements with thin and lightweight counterparts is a persistent pursuit of the optical society. Metasurfaces, as two-dimensional artificial meta materials, have exceptional ability to manipulate electromagnetic waves. With the advances in planar digital optics and vector optical field manipulation via metasurfaces, planar optics with multiscale optical field manipulation is highly desired in practical applications.
Article
Computer Science, Information Systems
Ali Ali et al.
Summary: A reflective metasurface (RMTS) is used to enhance the coverage of high gain terahertz (THz) OAM beams by reshaping the incident wavefront into a helical wavefront, redirecting it towards the desired direction. This can alleviate the concern of small aperture size, as it improves channel capacity in the low spectrum blocks of the THz band (larger aperture size). Validation is done through simulation, fabrication, and testing of three 90 x 90 mm RMTSs in the frequency range of 90-110 GHz, redirecting single and dual OAM beams to desired locations.
Review
Nanoscience & Nanotechnology
Furkan H. Isikgor et al.
Summary: Metal-oxide-based charge-transport layers are crucial for the development of perovskite solar cells, but the metal-oxide/perovskite interfaces often have defects that hinder charge transfer and cause non-radiative recombination. This review explores the challenges associated with these interfaces and proposes solutions using molecular engineering, such as self-assembled monolayers, to improve their performance and commercial viability.
NATURE REVIEWS MATERIALS
(2023)
Article
Multidisciplinary Sciences
Zaiwei Wang et al.
Summary: Researchers have discovered that lattice distortion in iodide/bromide mixed perovskites can suppress phase segregation, leading to increased ion-migration energy barrier. By using an approximately 2.0-electron-volt rubidium/caesium mixed-cation inorganic perovskite with large lattice distortion, they achieved an efficiency of 24.3% in all-perovskite triple-junction solar cells. This is the first reported certified efficiency for perovskite-based triple-junction solar cells.
Article
Nanoscience & Nanotechnology
Neha Niharika et al.
Summary: A bi-controllable all dielectric metasurface structure has been designed that allows for tuning of the maximum absorptance frequency through an external magnetic field and geometrical rotation. The simulation results demonstrate that the metasurface achieves high absorptance rates and is polarization insensitive when a magnetic field is applied. Furthermore, the metasurface shows sensitivity to changes in the refractive index value of the surrounding medium, making it suitable for chemical and biosensing applications.
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Lijuan Zhang et al.
Summary: The focal efficiency of the achromatic metalens can be effectively improved by using the topology optimization design method.
Article
Chemistry, Physical
Hailong Yin et al.
Summary: The nanofabrication mechanism of coupling field tip enhancement induced by laser-irradiated probe tip was investigated theoretically and experimentally. The result demonstrated that the electro-thermal coupling effect and thermal-mechanical coupling effect are the basic principles of this technique, independent of the materials. The significance of this study lies in enabling a refined understanding of the fundamental physics of surface nanostructuring and advancing the scientific and industrial applications of the technology.
APPLIED SURFACE SCIENCE
(2023)
Article
Polymer Science
Octavian Danila et al.
Summary: This study presents simulations on metasurface-based NO2 gas sensors operating in the telecom C band and exhibiting strong variations in reflection coefficient after assimilation of NO2 molecules. A polymer-based unit architecture, with hydrophyllic and NO2-responsive layers, allows for highly-sensitive response in the desired spectral window, overcoming limitations of absorption-based and electrical signal-based sensors. This proposed sensor architecture shows great potential for both biological and atmospheric NO2 gas-sensing applications.
Article
Engineering, Environmental
Weihua Ren et al.
Summary: In this study, Poly(3-hexylthiophene) (P3HT) was used as hole transport layer (HTL) in inorganic cesium lead triiodide (CsPbI3) perovskite solar cells (PSCs). By incorporating a nematic liquid crystal molecule, 4-Cyano-4-Pentylbipheny (5CB), the hole mobility of P3HT was significantly increased and the energy level arrangement at CsPbI3/P3HT interface was optimized. This resulted in a substantial increase in Voc and FF, leading to a record high efficiency of 18.75% for the P3HT-based CsPbI3 PSCs. Moreover, the P3HT:5CB HTL also exhibited superior moisture stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Crystallography
Guoxin Li et al.
Summary: In this study, CsI was used as a dopant to modify Spiro-OMeTAD, reducing voids in the hole transport layer and improving the functional characteristics of the material. The formation of a complex with TBP prevented rapid evaporation and eliminated cracks in Spiro-OMeTAD. The uniformly dispersed TBP inhibited the agglomeration of Li-TFSI in Spiro-OMeTAD, increasing conductivity and adjusting the energy level. The CsI-modified perovskite solar cells achieved a high efficiency and exhibited excellent long-term stability.
Article
Chemistry, Multidisciplinary
Lu Yang et al.
Summary: A novel compound HADI was designed to improve the efficiency and stability of flexible perovskite solar cells, showing significant roles in surface modification, passivation, and charge transfer. PSCs based on HADI-SnO2 electron transport layer exhibited outstanding performance.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Ran Wang et al.
Summary: This paper numerically demonstrates a broadband perfect absorber in the visible range, which has a high absorptance and potential applications in photovoltaics and photodetection.
Article
Nanoscience & Nanotechnology
Weiwen Jiang et al.
Summary: This paper proposes a design for enhancing light absorption in ultrathin perovskite solar cells through the integration of plasmonic structure arrays and moth-eye textured anti-reflection coatings. The optimized light absorption enhancement of 41% has been achieved compared to a blank 100 nm layer. The simulation results pave the way for environmentally friendly and high-performance perovskite optoelectronic devices.
Article
Crystallography
Zhansaya Omarova et al.
Summary: Perovskite solar cells have achieved significant success in the field of photovoltaics, but further research is needed to improve their performance. This study simulated the efficiency limits and identified approaches to reduce the impact of defects, ultimately proposing an optimal device architecture.
Article
Chemistry, Physical
Michael Spence et al.
Summary: Multijunction solar cells have the potential to exceed the efficiency limit of single-junction devices. To reduce optical reflection losses in silicon-perovskite tandem devices, textured anti-reflective coatings (ARCS) such as textured polydimethylsiloxane (PDMS) can be used. This study found that PDMS film can significantly reduce the reflectance of non-textured silicon-perovskite tandem cells and increase the integrated J(SC) by 3-5% in each sub-cell.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Furqanul Hassan Naqvi et al.
Summary: Raman spectroscopy was used to study the structural phase transitions and thermal degradation of MAPbCl(3) single crystals over a wide temperature range, revealing discontinuous anomalies in the low-frequency lattice modes and changes in the number of Raman modes at transition points.
Article
Chemistry, Physical
Ji Seong Choi et al.
Summary: This paper proposes a sticker-type ultra-thin perfluoropolyether (PFPE) AR film (SUPA) with high LTE and thin film thickness for high-efficiency flexible perovskite solar cells (PSCs). The SUPA-assisted PSCs demonstrate high short-circuit current density and power conversion efficiency, as well as excellent durability against light exposure, damp heat, and bending.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Ana Barar et al.
Summary: We report theoretical investigations on the spectral behavior of two fractal metasurfaces, performed in the 3-6 THz frequency window, and compare the reflection spectra of these metasurfaces with different levels of structural complexity.
Review
Chemistry, Multidisciplinary
William Chiappim et al.
Summary: The increasing demand for miniaturized devices has led to high importance and requirements for nanofabrication technologies that are of high-quality, low temperatures, and low cost. In recent years, the development of atomic layer deposition (ALD) processes has sparked interest in their use in advanced electronic and nano/microelectromechanical systems (NEMS/MEMS) device manufacturing. Non-thermal plasma (NTP) technology has emerged as a significant technique that expands the process window of ALD and allows the fabrication of various nanomaterials at lower temperatures, enabling the coverage of thermosensitive substrates with good formability and uniformity. This review article comprehensively describes the impact of NTP on the ALD universe and its applications in device fabrication. It also presents the integration of NTP and ALD technologies to form the plasma-assisted ALD (PA-ALD) technique, which has been successfully used in nanofabrication and surface modification. The advantages and limitations of this technique are discussed, along with the introduction of atomic layer etching (ALE) technique, another development of the NTP and ALD junction that has gained attention for plasma-assisted nanofabrication.
Article
Chemistry, Multidisciplinary
Yao Liang et al.
Summary: This article introduces a novel plasmonic metasurface structure in the mid-infrared range that achieves full-Stokes polarization perfect absorption, providing strong field enhancement and sharp differentiation of spectral responses for various polarization states.
Article
Chemistry, Multidisciplinary
Joel Y. Y. Loh et al.
Summary: Metamaterials are synthetic structures that achieve efficient light absorption by manipulating refractive index, and enhance catalytic reaction rates through intricate optical and plasmonic resonance processes. Compared to nanoparticles or films, metamaterial catalysts exhibit superior photocatalytic performance.
Article
Energy & Fuels
Yu Qiu et al.
Summary: The paper introduces a selective metamaterial absorber with four-pointed star prisms, obtaining perfect spectrally selective performance through optimization. The optimal absorber demonstrates high solar-to-heat efficiency in high-temperature solar applications.
Article
Nanoscience & Nanotechnology
Chenzhe Wang et al.
Summary: By engineering nanohole arrays on a HOIP ultrathin film, an all-dielectric HOIP metasurface with broadband optical absorption enhancement has been successfully designed, significantly increasing the absorption efficiency. The design provides high absorption rates up to 90% across the entire visible regime, and consistently high absorption efficiency of 51%-87% in a broad wavelength range of 400 nm-770 nm.
Article
Chemistry, Physical
Octavian Danila et al.
Summary: This paper introduces a k-surface framework for describing the dispersion properties of media with designer electric and magnetic responses, including positive and negative values as well as the coupling between the two.
Article
Chemistry, Physical
Chenxia Kan et al.
Summary: The synthesized PCBHGE can effectively suppress ion migration in perovskite solar cells, leading to improved long-term stability. The novel device shows high efficiency and can maintain a high efficiency even after prolonged exposure to different light conditions.
ACS ENERGY LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Shobhit K. Patel et al.
Summary: A novel graphene-based metasurface plasmonic biosensor is proposed, utilizing gold split-ring resonators to enhance electromagnetic field incidents. Two types of split-ring resonator based metasurface designs are analyzed for biosensing, showing the highest sensitivity in single split ring resonator design for hemoglobin-urine concentrations. This biosensor has the potential to be a key component in future medical biosensing devices.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Yongzhi Cheng et al.
Summary: In this paper, a terahertz perfect absorber made of all-dielectric metasurface with periodic sub-wavelength InSb micro-rod array is proposed for temperature and refractive index sensing application. The absorbance of 99.9% at 1.757 THz with a Q-factor of about 53.24 under room temperature is achieved, and the resonance absorption properties can be adjusted by changing the geometric parameters of the structure. The proposed PA shows potential applications in sensors, detectors, filters, and other optoelectronic devices in the THz region.
Article
Chemistry, Analytical
Octavian Danila et al.
Summary: Simulations were conducted on the spectral behavior of non-layered gold-silicon and all-silicon frequency-selective metasurfaces in the mid-infrared spectral window, demonstrating their viability for applications in absorbers, sensors, and imaging systems.
Article
Polymer Science
Octavian Danila
Summary: Theoretical investigations were conducted in the terahertz G-band for a piezoelectrically-responsive ring-cone element metasurface, showing the capability to achieve complete electric field polarization control, near-zero optical switching, and resonant behavior. The metasurface's spectral response is dependent on the combination of polymer elements and substrates, with the ability to modify the phase of reflected and transmitted waves for full electric field polarization control. The architecture's uniqueness lies in the combination of readily-available materials and the introduction of an extra degree of freedom through the longitudinal piezoelectric effect, offering potential for various terahertz applications.
Review
Engineering, Manufacturing
Shixuan He et al.
Summary: Helium ion beam (HIB) technology is widely used in nanofabrication for applications such as direct-write milling and ion beam-induced deposition. Its applications span across integrated circuits, materials sciences, nano-optics, and biological sciences, making it an important tool for extreme nanofabrication.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2021)
Article
Chemistry, Multidisciplinary
Xianyuan Jiang et al.
Summary: Tin halide perovskite has emerged as a promising alternative to lead perovskite in solar cell applications, with potentially less toxicity and higher efficiency. Research has shown that with methods to reduce tin oxidation and structural engineering, the performance and stability of TPSCs have been significantly improved.
ACCOUNTS OF MATERIALS RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Jianchao Yang et al.
Summary: The study reveals that d-penicillamine (PA) can effectively passivate iodine vacancies (Pb2+ defects) and finely tune the crystallinity of Cs/FA-based perovskite film, reducing non-radiative recombination and increasing photoluminescence lifetime for enhanced performance in MA-free devices.
Review
Materials Science, Multidisciplinary
Qamar Wali et al.
ORGANIC ELECTRONICS
(2020)
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Mohammad I. Hossain et al.
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Dwight W. Swett
SCIENTIFIC REPORTS
(2020)
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Yujiao Li et al.
FRONTIERS IN CHEMISTRY
(2020)
Article
Materials Science, Multidisciplinary
R. M. H. Bilal et al.
RESULTS IN PHYSICS
(2020)
Article
Engineering, Electrical & Electronic
Suresh Venkatesh et al.
NATURE ELECTRONICS
(2020)
Article
Optics
Kseniia Baryshnikova et al.
LASER & PHOTONICS REVIEWS
(2020)
Article
Materials Science, Multidisciplinary
Devang Katrodiya et al.
Article
Energy & Fuels
Mac Kim et al.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2019)
Article
Optics
Hengchang Lu et al.
Review
Chemistry, Multidisciplinary
Erkan Aydin et al.
ADVANCED MATERIALS
(2019)
Article
Physics, Applied
Yu Liang et al.
APPLIED PHYSICS EXPRESS
(2019)
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Multidisciplinary Sciences
Aaron L. Holsteen et al.
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Osbel Almora et al.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2019)
Review
Chemistry, Multidisciplinary
Lan Wang et al.
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Chemistry, Multidisciplinary
Sai Chen et al.
Review
Chemistry, Multidisciplinary
Dong-Ho Kong et al.
ADVANCED MATERIALS
(2019)
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Daniel P. Tabor et al.
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Jingyi Yang et al.
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M. Janneh et al.
OPTICS COMMUNICATIONS
(2018)
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Georgiy Tkachenko et al.
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Pavel M. Voroshilov et al.
Editorial Material
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Fan Wu et al.
ACS ENERGY LETTERS
(2018)
Article
Optics
Mohammad Ali Shameli et al.
Article
Multidisciplinary Sciences
Wayesh Qarony et al.
ADVANCED THEORY AND SIMULATIONS
(2018)
Review
Nanoscience & Nanotechnology
Jacob Scheuer
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Salman Manzoor et al.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2017)
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Multidisciplinary Sciences
Bo Wang et al.
SCIENTIFIC REPORTS
(2016)
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Chemistry, Physical
Aurelien M. A. Leguy et al.
CHEMISTRY OF MATERIALS
(2015)
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Optics
Miha Filipic et al.
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Bert Conings et al.
ADVANCED ENERGY MATERIALS
(2015)
Review
Optics
Xing Zhao et al.
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Ori Avayu et al.