A5021889789- Perovskite Materials and Applications
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Thin-Film Transistor Technologies
- Silicon Nanostructures and Photoluminescence
- ZnO doping and properties
- Silicon and Solar Cell Technologies
- Advancements in Battery Materials
- Plasmonic and Surface Plasmon Research
- Solid-state spectroscopy and crystallography
- Ga2O3 and related materials
- Copper-based nanomaterials and applications
- Advanced Photocatalysis Techniques
- Advanced Battery Materials and Technologies
- 2D Materials and Applications
- Supercapacitor Materials and Fabrication
- Optical Coatings and Gratings
- MXene and MAX Phase Materials
- Chalcogenide Semiconductor Thin Films
- Multiferroics and related materials
- Ferroelectric and Piezoelectric Materials
- Laser-induced spectroscopy and plasma
- Organic Light-Emitting Diodes Research
- Photonic and Optical Devices
- Organic Electronics and Photovoltaics
China University of Geosciences (Beijing)
2015-2024
University of Namibia
2022
China University of Geosciences
2013-2017
Institute of Semiconductors
2005-2010
Chinese Academy of Sciences
2005-2010
A high-sensitive and fast-response photodetector based on BiFeO3 (BFO) ferroelectric thin film is fabricated using coplanar electrode configuration. large photocurrent/dark current ratio found up to two orders of magnitude at 1 V bias. Enhanced photocurrent rectification behavior the are observed after applying high voltage pulses BFO film. The short-circuit varies systematically with poling process increases linearly light density. On contrary, open-circuit keeps as a constant during...
High-quality WS2 film with the single domain size up to 400 μm was grown on Si/SiO2 wafer by atmospheric pressure chemical vapor deposition. The effects of some important fabrication parameters controlled growth have been investigated in detail, including choice precursors, tube pressure, growing temperature, holding time, amount sulfur powder, and gas flow rate. By optimizing conditions at one we obtained tungsten disulfide domains an average over 100 μm. Raman spectra, atomic force...
We investigated a high-performance deep ultraviolet photodetector based on β-gallium oxide (β-Ga2O3) nanowire network. β-Ga2O3 nanowires were grown at different temperatures by chemical vapor deposition method. X-ray diffraction, scanning electron microscopy, transmission microscopy and energy dispersive spectrum analysis utilized to characterize the structure morphology. With increasing temperature, became thicker their surface appeared more rough with many kinks branch-like shapes. It is...
In this contribution, the efficiencies of perovskite solar cells have been further enhanced, based on optical optimization studies. The photovoltaic devices with textured film can be obtained and a power conversion efficiency (PCE) fluorine-doped tin oxide (FTO)/Ag nanoparticles (NPs) embedded in c-TiO2/m-TiO2/CH3NH3PbI3/Spiro-OMeTAD/Au showed 33.7% enhancement, maximum up to 14.01% was achieved. enhancement attributed light trapping effect caused by FTO incorporated Ag NPs, which enhance...
Thin and lightweight flexible lithium-ion batteries (LIBs) with high volumetric capacities are crucial for the development of electronic devices. In present work, we reported a paper-like ultrathin Si/carbon nanotubes (CNTs) composite anode LIBs, which was realized by conformal electrodeposition thin layer silicon on CNTs at ambient temperature. This method quite simple easy to scale up low cost as compared other deposition techniques, such sputtering or CVD. The Si/CNTs exhibited in terms...
The coupling between ferroelectricity and ion conductivity always presents unique physical chemical properties, making it crucial to understand their correlation for the development of advanced functional devices. CuInP2S6 (CIPS), a van der Waals “ferroionic” material, serves as an excellent platform investigate intercoupling. In this study, we observe bipolar diode-like rectification behavior in vertical Pt/CIPS/In capacitor by controlling migration Cu ions. non-uniform distribution mobile...
Abstract The white emissions based on lead‐free perovskites with broadband emission due to self‐trapped excitons (STEs) are considered as an ideal candidate for next‐generation light‐emitting diodes (WLEDs). Recently, copper‐based halide Cs 3 Cu 2 I 5 @CsCu composites films a high color‐rendering index (CRI) have been developed WLEDs. However, the generally exhibit relatively low photoluminescence quantum yield (PLQY). Herein, PLQY up 86.75% perovskite Gua (Gua = guanidine) strong yellow...
In this paper, controllable synthesis of various ZnO nanostructures was achieved via a simple and cost-effective hydrothermal process on the Si substrate. The morphology evolution well monitored by tuning growth parameters, such as seed layer, solution concentration, reaction temperature, surfactant. X-ray diffraction photoluminescence measurements reveal that crystal quality optical properties crucially depend nanostructures. ease convenience to tune bring approach great potential for...
Lead-free, bismuth-based perovskite solar cells (PSCs) are promising, non-toxic, and stable alternatives to lead-based PSCs, which environmentally harmful highly unstable under deprived air conditions. However, PSCs still suffer from low-power-conversion efficiency (PCE) due their large bandgap poor film morphology. Their film-forming ability is the greatest obstacle Cs₃Bi₂I₉ progress in thin-film cell technology. This study synthesizes novel, lead-free perovskites with a small bandgap,...
Although many groups have been trying to prepare perovskite solar cells (PSCs) in ambient air, the power conversion efficiency (PCE) is still low. Besides, effect of moisture on formation films controversial. In this paper, we studied detail, and found that can speed up crystallizing process PbI2 form poor-quality with large grain size surface roughness, while, for films, a small amount not adverse, even beneficial. On basis, report successful fabrication efficient mesoporous PSCs PCE 16.00%...
A flexible NS@CNT composite is synthesized by electrodeposition, showing a record specific capacity in terms of the entire electrode mass.
SnSe2 field-effect transistor was fabricated based on exfoliated few-layered flake, and its electrical photoelectric properties have been investigated in detail. With the help of a drop de-ionized (DI) water, FET can achieve an on/off ratio as high ~ 104 within 1 V bias, which is ever extremely difficult for due to ultrahigh carrier density (1018/cm3). Moreover, subthreshold swing mobility are both improved ∼ 62 mV/decade 127 cm2 V−1 s−1 at 300 K, results from efficient screening by liquid...
In order to further promote the commercial application of perovskite solar cells (PSCs), it is particularly important fabricate devices in ambient air condition. Herein, we explore a simple method reproduce high-efficiency and stable PSCs using one-step anti-solvent deposition conducted full air. NH4Ac (ammonium acetate), which green environmentally friendly, first introduced into an (ethyl acetate) enhance photovoltaic performance stability devices. NH4+ causes intermediate phase undergo...
Controllable synthesis of various ZnO nanocrystals was achieved via a simple and cost-effective hydrothermal process. The morphology evolution the nanostructures well monitored by tuning growth parameters, such as solution concentration, reaction temperature, surfactant. As-obtained with different morphologies, e.g., nanorods, nanotetrapods, nanoflowers, nanocubes, were further introduced into organic bulk heterojunction solar cells electron transport channel. It found that device...