A5101538365- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Electrocatalysts for Energy Conversion
- MXene and MAX Phase Materials
- GaN-based semiconductor devices and materials
- Advanced Photocatalysis Techniques
- Organic Light-Emitting Diodes Research
- 2D Materials and Applications
- Semiconductor Quantum Structures and Devices
- Ga2O3 and related materials
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Catalysis and Hydrodesulfurization Studies
- Semiconductor materials and devices
- Catalytic Processes in Materials Science
- Ammonia Synthesis and Nitrogen Reduction
- ZnO doping and properties
- Advanced Thermoelectric Materials and Devices
- Graphene research and applications
- Fuel Cells and Related Materials
- Photonic Crystals and Applications
- Nonlinear Optical Materials Studies
- Advanced battery technologies research
- Thermal Radiation and Cooling Technologies
- Skin Protection and Aging
University of Cambridge
2025
Shanxi University
2024
Zhengzhou University
2024
Hubei University of Education
2021-2024
Kyoto University Institute for Chemical Research
2023
Kyoto University
2023
Chongqing University
2020-2022
New Technology (Israel)
2020-2021
Chongqing Emergency Medical Center
2021
Central South University
2020-2021
All inorganic perovskite nanocrystals (NCs) of CsPbX3 (X = Cl, Br, I, or their mixture) are regarded as promising candidates for high-performance light-emitting diode (LED) owing to high photoluminescence (PL) quantum yield (QY) and easy synthetic process. However, NCs synthesized by the existing methods, where oleic acid (OA) oleylamine (OLA) generally used surface-chelating ligands, suffer from poor stability due ligand loss, which drastically deteriorates PL QY, well dispersibility in...
All‐inorganic perovskite light‐emitting diodes (LEDs) reveal efficient luminescence with high color purity, but their modest brightness and poor stability are still critical drawbacks. Here, the luminescent efficiency of LEDs (PeLEDs) boosted by antisolvent vapor treatment CsPbBr 3 embedded in a dielectric polymer matrix polyethylene oxide (PEO). A unique method is developed to obtain quality emitting layers low defects controlling grain sizes. PEO post‐treated chloroform (CF), leading...
Defect passivation has been demonstrated to be effective in improving the radiative recombination of charge carriers perovskites, and consequently, device performance resultant perovskite light-emitting diodes (LEDs). State-of-the-art useful agents LEDs are mostly organic chelating molecules that, however, simultaneously sacrifice charge-transport properties thermal stability emissive layers, thereby deteriorating performance, especially operational devices. We demonstrate that lithium...
PbS quantum-dot (QD) solar cells are promising candidates for low-cost solution-processed photovoltaics. However, the device fabrication usually requires ten more times film deposition and rinsing steps, which is not ideal scalable manufacturing. Here, a greatly simplified processing demonstrated by replacing methanol with acetonitrile (ACN) as solvent. It discovered that ACN can effectively "cure" cracks generated from volume loss during solid-state ligand-exchange process, enables of thick...
Abstract Current efforts on lead sulfide quantum dot (PbS QD) solar cells are mostly paid to the device architecture engineering and postsynthetic surface modification, while very rare work regarding optimization of PbS synthesis is reported. Here, QDs successfully synthesized using PbO PbAc 2 · 3H O as sources. QD based PbAc‐PbS have demonstrated a high power conversion efficiency (PCE) 10.82% (and independently certificated values 10.62%), which significantly higher than PCE 9.39% for...
Abstract Non‐metal‐based single‐atom catalysts (SACs) offer low cost, simple synthesis methods, and effective regulation for substrates. Herein, we developed a simplified pressurized gas‐assisted process, report the first non‐metal phosphorus with atomic‐level dispersion on unique single‐crystal Mo 2 C hexagonal nanosheet arrays (001) plane supported by carbon sheet (SAP‐Mo C‐CS). The SAP‐Mo C‐CS is structurally stable shows exceptional electrocatalytic activity hydrogen evolution reaction...
Solution-processed perovskite light-emitting diodes (LEDs) have attracted wide attention in the past several years. However, overall efficiency and stability of perovskite-based LEDs remain inferior to those organic or quantum dot LEDs. Nonradiative charge recombination unbalanced injection are two critical factors that limit device operational Here, we develop a strategy modify interface between hole transport layer emissive with an amphiphilic conjugated polymer poly[(9,9-bis(3'-( N,...
A multiple-passivation strategy by solution-phase ligand engineering in lead halide exchanged QDs ink is presented, which result remarkably improved colloidal stability of and enhanced device performance.
We have studied the charge transport physics of high-quality conducting coordination nanosheets films based on benchmark material copper benzenehexathiol (CuBHT) by measuring multiple thermoelectric and magnetotransport coefficients same film. The exhibit a metallic temperature dependence conductivity over wide range, but below 15 kelvin becomes dominated weak localization electron-electron interactions. Temperature-dependent Hall, Seebeck, Nernst measurements consistently indicate existence...
Recently, considerable researches have reported that the incorporation of potassium cation (K + ) in lead halide perovskites obviously improves performance perovskite solar cells. The recent finding indicates interstitial occupancy position K lattice can increase ion‐migration barrier, which dramatically suppresses hysteresis device. However, enhancement photoluminescence (PL) as well bandgap variation cannot be interpreted by state perovskite. Considering this discrepancy, it has been found...
Two-dimensional (2D) lead halide perovskites with long-chain ammonium halides display high photoluminescence quantum yields (PLQYs), because of their size and dielectric confinement, which hold promise for a high-efficiency low-cost light-emitting diode (LED). However, the presence an insulating organic spacer cation (L) dramatically deteriorates charge transport properties along out-of-plane nanoplatelet direction or adjacent nanocrystals, would limit device performance LED. To overcome...
Enhanced ORR activities and durability derived from self-converting of PtP<sub>2</sub> NPs to core–shell Pt/PtP<sub>2</sub> on NPC.
The poor operational stability remains a key challenge in perovskite light-emitting diodes. In this work, we investigate the detrimental effects of thermal-induced interface degradation on device performance
This work not only demonstrates that a Nb<sub>2</sub>N monolayer can be used as promising anode material but also inspires the future rational design of other nitride MXenes in energy conversion and storage devices.
Non-radiative recombination in all-inorganic CsPbBr<sub>3</sub> perovskite films was dramatically reduced upon partial replacement of lead ions with magnesium, leading to efficient and stable light-emitting diodes.
Nickel oxide (NiO) would be an alternative hole transport layer for perovskite light-emitting diodes (PeLEDs). However, the performances of NiO-based PeLEDs are still inferior due to adverse non-radiative recombination at interface. Here, a poly(9-vinlycarbazole) (PVK) is inserted between and NiO film. The photoluminescence quantum yield dramatically enhanced from 23% 54% in presence PVK owing suppression recombination. Combined with favorable injection ladder energy band scheme NiO/PVK...
Abstract Halide perovskites are promising emitters for light‐emitting diodes (LEDs) due to their outstanding optoelectronic properties, i.e., tunable bandgap, high photoluminescence quantum efficiency, and excellent color purity. However, in contrast green red cousins, the present blue perovskite LEDs still suffering from poor operational lifetime electroluminescence shift during bias operation, hindering practical applications full‐color information displays. Developing rational strategies...
The advantages of ultraviolet light-emitting diodes (LEDs) inserted with a p-AlGaN layer, whose Al mole composition is less than that the last barrier, between barrier and electron blocking layer have been investigated by using Crosslight APSYS programs. results show output power internal quantum efficiency proposed LEDs are improved. Furthermore, droop also mitigated effectively. Based on analysis electrical optical characteristics, these improvements mainly attributed to relatively higher...