A5047202833- Perovskite Materials and Applications
- Conducting polymers and applications
- Ga2O3 and related materials
- Quantum Dots Synthesis And Properties
- ZnO doping and properties
- Chalcogenide Semiconductor Thin Films
- Solid-state spectroscopy and crystallography
- Advanced Photocatalysis Techniques
- Organic Light-Emitting Diodes Research
- GaN-based semiconductor devices and materials
- Organic Electronics and Photovoltaics
- Semiconductor materials and devices
- 2D Materials and Applications
- Luminescence Properties of Advanced Materials
- Electronic and Structural Properties of Oxides
- Diamond and Carbon-based Materials Research
- Silicon Nanostructures and Photoluminescence
- Transition Metal Oxide Nanomaterials
- Semiconductor Quantum Structures and Devices
- Metal and Thin Film Mechanics
- Optical properties and cooling technologies in crystalline materials
- Advancements in Semiconductor Devices and Circuit Design
- Graphene research and applications
- Magnesium Oxide Properties and Applications
- Thin-Film Transistor Technologies
Xidian University
2015-2025
Xi'an University of Technology
2024
Wuhu Institute of Technology
2023
China XD Group (China)
2019-2020
The inferior crystallinity and phase stability of CsPbI2Br films have severely hindered the development carbon-based, all-inorganic perovskite solar cells (PSCs). Herein, we demonstrate preparation by top-seeded solution growth (TSSG) technique. It is performed through spin-coating CH3NH3Br (MABr) atop precursor film prior to annealing, during which seeds are generated it. These not only serve as nuclei regulate grains but also provide additional Br– anions generate a thin Br-rich layer...
All-inorganic, Cl-based perovskites are promising for visible-blind UV photodetectors (PDs), particularly the self-powered ones. However, devices rarely reported until now since low solubility of raw materials hinders significantly thickness and electronic quality solution-processed perovskite films. Herein, we demonstrate a simple intermediate phase halide exchange method to prepare desired dual-phase CsPbCl3–Cs4PbCl6 It is achieved by spin-coating certain dose CH3NH3Cl/CsCl solution onto...
Abstract Due to the excellent responsivity and high rejection ratio, Ga 2 O 3 -based solar-blind ultraviolet photodetectors (PDs) are attracting more attention. The material quality ensures great performance of PDs. In this review, we summarize recent advancements in growth methods β -Ga bulk thin films. Based on high-quality substrates films, numerous state-of-art PDs have been reported decades. Therefore, collect some representative achievements PDs, summarizing development process each...
In this letter, we demonstrate a high performance lateral β-Ga <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> solar-blind Schottky barrier photodiode (SBPD) with record detectivity (D*) and ultrahigh gain via carrier multiplication process. Due to the strong electric field, carriers generated under 254 nm light illumination undergo acceleration impact ionization, contributing internal...
This letter demonstrates a high performance β-Ga <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> solar-blind metal-oxide-semiconductor field-effect phototransistor (SBPT) with Hafnium Oxide (HfO ) Gate Dielectric. The SBPT shows Photo-to-dark-current ratio (PDCR) of 6.9×10 <sup xmlns:xlink="http://www.w3.org/1999/xlink">7</sup> , an I xmlns:xlink="http://www.w3.org/1999/xlink">254...
All-inorganic perovskite CsPbIBr2 materials are promising for optoelectronics, owing to their upgraded ambient stability and suitable bandgap. Unfortunately, they generally undergo severe halide phase segregation under illumination, which creates many iodide-rich bromide-rich domains coupled with significant deterioration of optical/electrical properties. Herein, we propose a facile effective strategy overcome the in film by modifying its crystalline grains poly(methyl methacrylate) (PMMA)...
With the fast development of perovskite solar cell, its energy conversion efficiency has improved rapidly. In this paper, a CH3NH3PbI3–xClx organic–inorganic cell (PSC) was successfully prepared by one-step solvent engineering method, and planar heterojunction optimized interface cathode interlayers. It found that TiCl4 treatment could effectively reduce TiO2 surface roughness, decrease defects, improve thin film crystallinity, charge carrier recombination; hence, short-circuit current...
Carbon-based, all-inorganic perovskite solar cells (PSCs) have drawn enormous attention recently on account of their ungraded stability and reduced costs. However, power conversion efficiencies (PCEs) still lag behind the ones with conventional architecture. Moreover, high cost FTO substrates energy-consuming sintering process TiO2 electron-transporting layers should be further addressed. Herein, it is demonstrated that FTO/TiO2 could separated simply from degraded CsPbIBr2 PSCs for...
An efficient TeO<sub>2</sub>/Ag transparent top electrode for bifacial perovskite solar cells with 20% efficiency was developed.
Pinholes in absorber films are traditionally thought to degrade the performance of perovskite solar cells. The pursuit efficient cells, especially large-area ones, has thus mainly focused on realizing full-coverage films. Herein, we demonstrate that such a paradigm can be broken carbon-based, all-inorganic by taking CsPbIBr2 film as an example. It is revealed pinholes one-step solution-processed will not form detrimental shutting paths ultimate cell when relatively thick (∼700 nm). We link...
The performance of perovskite solar cells (PSCs), especially for the parameters open-circuit voltage (Voc) and fill factor, is seriously restricted by unavoidable interfacial charge recombination. In this study, an ultrawide band gap semiconductor material Ga2O3 introduced between fluorine-doped tin oxide SnO2 to regulate dynamics forming Ga2O3/SnO2 electron-transporting bilayer. has appropriate conduction minimum which benefits electron transport, at same time, it a very deep valence...
In this work, flexible solar blind Ga <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> ultraviolet photodetectors with high responsivity and photo-to-dark current ratio are demonstrated. The films obtained by the RF magnetron sputtering method on polyimide (PI) substrates results demonstrate that all grown under various temperatures amorphous. When incident light wavelength is less than...
Perovskite solar cells (PSCs) based on the 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (spiro-OMeTAD) hole transport layer have exhibited leading device performance. However, instability caused by this organic function is a very important limiting factor to further development of PSCs. In work, spiro-OMeTAD doped with polymethyl methacrylate (PMMA), which used as improve stability. It shown that PMMA can effectively moisture and oxygen resistance spiro-OMeTAD, leads...
All-inorganic CsPbBr3 perovskite solar cells (PSCs) have attracted more attentions due to the excellent environmental stability, however, wide bandgap and relatively poor crystallinity of been main obstacle improve their power conversion efficiency (PCE). Herein, we proposed an efficient simple strategy precursor additive in two-step aqueous-solution method, resulted film has achieved uniform grain size, almost pure phase, smoother surface, less defects, enhanced light absorption longer...
The four-terminal tandem solar cell consisting of a bottom cell, which employs crystalline silicon (c-Si) as an absorber layer, and top methyl ammonium lead halide (CH <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> NH PbI ) was constructed. In order to improve performance, antireflection layers were employed reduce reflection enhance photon transmission. this study, we explored the effect on cells performance with Silvaco Atlas....
A CsPbBr<sub>3</sub> film is achieved by a PEAI sacrificial additive-based strategy, endowing self-powered PD with ultra-low dark current and high sensitivity.
High-quality CsPbIBr<sub>2</sub> films with a much lower self-doping level are obtained by the use of CsI-rich precursor, which enables fabrication an all-inorganic, carbon-based solar cell superior efficiency 10.48%.
Wide-band-gap (WBG) perovskite solar cells have gained significant attention in silicon/perovskite tandem due to their suitable band gap and high open circuit voltage (Voc). However, the phase separation film defects of WBG films severely hindered larger Voc efficiency. Herein, we demonstrate a simple passivation approach with potassium thiocyanate methylammonium chloride dual-passivation, which could effectively increase grain size suppress ion migration separation. Consequently,...