A5081053293- Perovskite Materials and Applications
- Organic Light-Emitting Diodes Research
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Advanced Memory and Neural Computing
- Ferroelectric and Negative Capacitance Devices
- Organic Electronics and Photovoltaics
- Neuroscience and Neural Engineering
- Luminescence and Fluorescent Materials
- Advanced Computational Techniques and Applications
- Plasmonic and Surface Plasmon Research
- Transition Metal Oxide Nanomaterials
- Chalcogenide Semiconductor Thin Films
- Solid-state spectroscopy and crystallography
- Advanced Fiber Optic Sensors
- Neurobiology of Language and Bilingualism
- Service-Oriented Architecture and Web Services
- Metamaterials and Metasurfaces Applications
- 2D Materials and Applications
- Second Language Acquisition and Learning
- Optical properties and cooling technologies in crystalline materials
- Electronic and Structural Properties of Oxides
- Advanced Fiber Laser Technologies
- Web Applications and Data Management
- Advanced Antenna and Metasurface Technologies
Xi'an Jiaotong University
2016-2025
Beijing Jiaotong University
2025
State Grid Corporation of China (China)
2023-2024
Fujian Medical University
2024
Guangdong University of Foreign Studies
2024
National University of Defense Technology
2020-2023
Dongbei University of Finance and Economics
2023
Peking Union Medical College Hospital
2022
Chinese Academy of Medical Sciences & Peking Union Medical College
2022
Institute of Semiconductors
2022
Research to date lends general support the claim that pre‐task planning impacts positively on language production, especially where fluency and complexity are concerned. However, mixed results have been found for accurate use (e.g. Ellis 1987; Crookes 1989). One reason these variable may be studies differed in whether task conditions allowed time or encouraged careful on‐line (i.e. formulation monitoring of speech plans). The present study was designed investigate effects both L2 oral...
Abstract Nonvolatile optoelectronic memories integrated with the functions of sensing, data storage, and processing are promising for potential Internet things (IoT) applications. To meet requirements IoT devices, multifunctional memory devices low power consumption secure storage highly desirable. This study demonstrates an resistive switching sensing logic operations by adopting organic–inorganic hybrid CH 3 NH PbI 3− x Cl perovskites, which possess unusual defect physics excellent light...
As a promising substitute for toxic lead-based perovskite, tin (Sn)-based halide perovskite has drawn much attention photovoltaic applications. However, unsatisfied open-circuit voltage (VOC) and fill factor (FF) values of the available Sn-based solar cells (PSCs) remain lingering cloud. In this work, we report bilateral interfacial engineering strategy to fabricate 2D–3D bulk heterojunction cells. Specifically, large cation PEAI bifunctional LiF are evaporated at interfaces FASnI3 film. The...
All present designs of perovskite light-emitting diodes (PeLEDs) stem from polymer (PLEDs) or solar cells. The optimal structure PeLEDs can be predicted to differ PLEDs due the different fluorescence dynamics and crystallization between polymer. Herein, a new design strategy conception is introduced, "insulator-perovskite-insulator" (IPI) architecture tailored PeLEDs. As examples FAPbBr3 MAPbBr3 , it experimentally shown that IPI effectively induces charge carriers into crystals, blocks...
Deep traps originated from the defects formed at surfaces and grain boundaries of perovskite absorbers during their lattice assembly are main reasons that cause nonradiative recombination material degradation, which notably affect efficiency stability solar cells (PSCs). Here, we demonstrate substantially improved PSC performance by capping photoactive layer with low-dimensional (LD) perovskitoids. The undercoordinated Pb ions metallic three-dimensional (3D) effectively passivated via Pb-I...
The buried interface of the perovskite layer has a profound influence on its film morphology, defect formation, and aging resistance from outset, therefore, significantly affects quality device performance derived solar cells. Especially for FAPbI
A bismuth-based organohalide material, methylammonium bismuth iodide (MA3Bi2I9), has been recently explored as an efficient lead-free light absorber in photovoltaic applications. However, the poor surface morphology of MA3Bi2I9 film fabricated via conventional one-step spin-coating methods limited performance device. In this work, a smooth, uniform, and compact thin was realized by novel two-step evaporation–spin-coating fabrication strategy for first time. Taking advantage superior film,...
Abstract Interfacial ligand passivation engineering has recently been recognized as a promising avenue, contributing simultaneously to the optoelectronic characteristics and moisture/operation tolerance of perovskite solar cells. To further achieve win‐win situation both performance stability, an innovative conjugated aniline modifier (3‐phenyl‐2‐propen‐1‐amine; PPEA) is explored moderately tailor organolead halide perovskites films. Here, PPEA presents “quasi‐coplanar” rigid geometrical...
Abstract Stability issue is one of the major concerns that limit emergent perovskite light‐emitting diodes (PeLEDs) techniques. Generally, ion migration considered as most important origin PeLEDs degradation. In this work, an all‐inorganic device architecture, LiF/perovskite/LiF/ZnS/ZnSe, proposed to address imperative problem. The inorganic (Cs 1− x Rb ) y K PbBr 3 optimized with achieving a photoluminescence quantum yield 67%. Depth profile analysis X‐ray photoelectron spectroscopy...
Blue-emitting materials and their light-emitting diodes (LEDs) are always challenging in lighting display applications. Recently, perovskite LEDs (PeLEDs) with efficient stable green/red emission have made great progress, where external quantum efficiency (EQE) over 20% has been reached. However, it is still a big challenge to realize blue PeLEDs high mainly because of the poor film quality unreasonable device structure. Herein, cocktail strategy, that is, multication...
Conducting bridge random access memory (CBRAM) is one of the most promising candidates for future nonvolatile memories. It important to understand scalability and retention CBRAM cells realize better performance. Here, we directly observe switching dynamics Cu tip/SiO2/W with various active electrode sizes using in situ transmission electron microscopy. filaments (CFs) grow from (Cu tip) inert (W) during SET operations. The size tip affects electric-field distribution, amount cation...
Transparent and flexible electromagnetic interference (EMI) shielding film is highly desirable due to the fast-growing electronics. A silver nanowire (Ag NW) considered be an ideal candidate for a transparent EMI but suffers low effectiveness (SE) at high transparency poor bending durability. Herein, we introduce ferroferric oxide (Fe3O4) into Ag NW demonstrate robust film, which exhibits SE of 24.9 dB 8.2 GHz optical 90%. Fe3O4 roles improved absorption loss radiation its permeability,...
Abstract Flexible perovskite solar cells possess huge application potential in both outdoor (sunlight) and indoor scenes (artificial low light) owing to their high optoelectronic conversion efficiency agile integration advantages. In order further establish feasibility meet multi‐scenario applications, here a facile “internal packaging” interface strategy is developed, where selective light‐cured cross‐linking molecule leveraged effectively heal the defects over films. Moreover, cross‐linked...
Halide perovskite nanocrystals (NCs), specifically CsPbBr3, have attracted considerable interest due to their remarkable optical properties for optoelectronic devices. To achieve high-efficiency light-emitting diodes (LEDs) based on CsPbBr3 it is crucial optimize both photoluminescence quantum yield (PLQY) and carrier transport when they are deposited form films substrates. While the exchange of native ligands with didodecyl dimethylammonium bromide (DDAB) ligand pairs has been successful in...
Metal halide perovskites hold great promise for cost-effective, solution-processed, light-emitting diodes (LEDs) due to their exceptional optoelectronic properties. However, fabricating all-solution-processed perovskite LEDs (PeLEDs) remains challenging because the emitters are susceptible damage from subsequent solution layers. Here, we introduce a novel fabrication method that employs low-pressure-treated electron-transport layer (ETL) at room temperature, complemented by polyethylenimine...
A new iridium complex with a phenylphthalazine ligand has been prepared by an unexpected method and polymer light-emitting devices doped the have achieved nearly 100% internal phosphorescence efficiency.
Inorganic cesium lead halide perovskite has been successfully applied in the optoelectronic field due to its remarkable optical gain properties. Unfortunately, conventional solution-processed CsPbX3 films suffer unavoidable pinhole defects and poor surface morphology, severely limiting their performance on amplified spontaneous emission (ASE) lasing applications. Herein, a dual-source thermal evaporation approach is explored achieve uniform high-coverage polycrystalline thin film. It was...
Organometal halide perovskites (OHPs) have become the most promising optoelectronic material in past few years with a myriad of applications photovoltaic, light-emitting, and laser fields. However, for light-emitting applications, low photoluminescence quantum yield (PLQY) OHP film is critical to hinder efficiency improvement OHP-film-based diodes (PeLEDs). Herein, we study effects rubidium incorporation on crystal growth, structure, photoelectric optical properties...
Deep-blue emitters are greatly desirable for preparing white light-emitting diodes and enhancing the color gamut of full-color display. The deep-blue lead halide perovskite (PeLEDs) exhibit far inferior performance compared to green red counterparts suffer from toxicity, hampering their applications. Nontoxic, stable, wide band gap zero-dimensional (0D) Cs3Cu2I5 with relatively high exciton binding energy has great potential as emitters. However, development PeLEDs remains a huge challenge...
Ultrasmooth perovskite films were fabricated by micro-flowing anti-solvent deposition in air, contributing to highly efficient inverted planar heterojunction solar cells.