A5100690377- Perovskite Materials and Applications
- Solid-state spectroscopy and crystallography
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Luminescence Properties of Advanced Materials
- 2D Materials and Applications
- Advanced Semiconductor Detectors and Materials
- Ga2O3 and related materials
- Radiation Detection and Scintillator Technologies
- Vehicle Noise and Vibration Control
- Magnetic and transport properties of perovskites and related materials
- Conducting polymers and applications
- Effects of Vibration on Health
- Atomic and Subatomic Physics Research
- 3D IC and TSV technologies
- Advanced Decision-Making Techniques
- Electric and Hybrid Vehicle Technologies
- Advanced Photonic Communication Systems
- Rough Sets and Fuzzy Logic
- Construction Project Management and Performance
- Optimal Power Flow Distribution
- Structural Health Monitoring Techniques
- Power Systems and Renewable Energy
- Organic Light-Emitting Diodes Research
- Mechanical Engineering and Vibrations Research
Shanghai Normal University
2009-2025
Xi’an University of Posts and Telecommunications
2022-2024
North China Electric Power University
2022
Shanghai Polytechnic University
2021
Shaanxi Normal University
2016-2021
Advanced Energy Materials (United States)
2017-2021
Ministry of Education of the People's Republic of China
2018-2021
Dalian National Laboratory for Clean Energy
2020
Dalian Institute of Chemical Physics
2020
Chinese Academy of Sciences
2020
Abstract The organic-inorganic hybrid lead halide perovskites have emerged as a series of star materials for solar cells, lasers and detectors. However, the issues raised by toxic element marginal stability due to volatile organic components severely limited their potential applications. In this work, we develop nucleation-controlled solution method grow large size high-quality Cs 3 Bi 2 I 9 perovskite single crystals (PSCs). Using technique, harvest some centimeter-sized achieved high...
Thinness-controlled perovskite wafers are directly prepared using a geometry-regulated dynamic-flow reaction system. It is found that the superior material for photodetectors with photocurrent response ≈350 times higher than made of microcrystalline thin films. Moreover, compatible mass production integrated circuits.
Abstract By fine‐tuning the crystal nucleation and growth process, a low‐temperature‐gradient crystallization method is developed to fabricate high‐quality perovskite CH 3 NH PbBr single crystals with high carrier mobility of 81 ± 5 cm 2 V −1 s (>3 times larger than their thin film counterpart), long lifetime 899 127 ns (>5 ultralow trap state density 6.2 2.7 × 10 9 −3 (even four orders magnitude lower that single‐crystalline silicon wafers). In fact, they are better reported in prior...
Single crystalline perovskites exhibit high optical absorption, long carrier lifetime, large mobility, low trap-state-density and defect tolerance. Unfortunately, all single attained so far are limited to bulk crystals small area wafers. As such, it is impossible design highly demanded flexible single-crystalline electronics wearable devices including displays, touch sensing devices, transistors, etc. Herein we report a method of induced peripheral crystallization prepare membrane (SCM)...
Abstract Low ionic migration is required for a semiconductor material to realize stable high‐performance X‐ray detection. In this work, successful controlled incorporation of not only methylammonium (MA + ) and cesium (Cs cations, but also bromine (Br – anions into the FAPbI 3 lattice grow inch‐sized perovskite single crystal (FAMACs SC) reported. The smaller cations anions, comparing original FA I help release stress so that FAMACs SC shows lower ion migration, enhanced hardness, trap...
A centimeter-sized high-quality two-dimensional (PEA)<sub>2</sub>PbBr<sub>4</sub> single crystal was prepared, which exhibited superior UV photo-response performance.
Low-temperature solution–grown large high-quality perovskite single crystals enable integrated circuits for imaging.
Lead-free A3 Bi2 I9 -type perovskites are demonstrated as a class of promising semiconductors for high-performance X-ray detection due to their high bulk resistivity and strong absorption, well reduced ion migration. However, long interlamellar distance along c-axis, limited carrier transport the vertical direction is bottleneck sensitivity. Herein, new A-site cation aminoguanidinium (AG) with all-NH2 terminals designed shorten interlayer spacing by forming more stronger NH···I hydrogen...
Abstract 0D Bi‐based 329‐type halide perovskite is demonstrated as a promising semiconductor for X‐ray detection due to its strong absorption, superior stability, availability of large single crystals (SCs) and solution processibility at low temperature. However, mobility‐lifetime product ( µτ ) limits further improvement in sensitivity. Based on the first‐principles calculations, this work designs new 2D using mixed‐halide‐induced structural dimension regulation strategy. By continuous...
A series of dual-halide perovskite CH<sub>3</sub>NH<sub>3</sub>Pb(Br<sub>x</sub>I<sub>1−x</sub>)<sub>3</sub> (<italic>x</italic> = 0–1) single crystals were prepared, which exhibited superior photoresponse performance.
Lead halide perovskites with good optoelectronic properties and high attenuation of high-energy radiation are great candidates for X-ray detectors. Large area, dense, thick films or wafers a prerequisite these applications. In this paper, one-step heat-assisted high-pressure press method is developed to directly prepare large (the largest has diameter 80 mm) thickness- shape-controlled phase-pure organic–inorganic hybrid CH3NH3PbI3 wafer densely packed microcrystals from raw powder...
Abstract Metal‐free halide perovskites, as a specific category of the perovskite family, have recently emerged novel semiconductors for organic ferroelectrics and promise wide chemical diversity ABX 3 structure with mechanical flexibility, light weight, eco‐friendly processing. However, after initial discovery 17 years ago, there has been no experimental information about their charge transport properties only one brief mention optoelectronic properties. Here, growth large single crystals...
Abstract Lead‐based (Pb) perovskite recently emerged as a promising photoelectric material for direct ionization radiation detection with outstanding performance. Unfortunately, its application is limited due to toxicity caused by high Pb content, serious ion migration, poor crystallite quality, unsatisfactory reproducibility, resistivity, and large fluctuation of electronic properties. Herein, better substitute lead‐free inch‐sized (34.3 mm × 34.3 13.1 mm) high‐quality halide (CH 3 NH ) Bi...
2D Dion-Jacobson (DJ) perovskites have recently drawn much attention owing to their superior charge transport and high environmental stability. Unfortunately, intrinsic optoelectronic properties are largely unexplored due the lack of high-quality single crystals available for accurate measurements. Herein, a reactive, low-temperature-gradient crystallization process grow perovskite crystal (BDAPbI4 ) using symmetric straight chain 1,4-butanediammonium as short-chain insulating spacer is...
Abstract Composition engineering, with its advantages to effectively tune semiconductor properties by regulating chemical stoichiometry, is a proven strategy boost the efficiency and stability of ABX 3 perovskite photoelectronic devices. Compared counterpart polycrystalline film, single crystalline ideal model for exploring fundamental scientific issues. In this review, critical overview recent advances growth strategies, properties, functional applications multicomponent crystals (SCs)...
Theoretical analyses indicate that a two-dimensional (2D) layered metal halide perovskite, with its unique quantum-well structure and large exciton binding energy, should render both fast strong fluorescence, making it ideal for X-ray imaging. Herein, an airflow-controlled solvent evaporation system is designed to grow inch-sized 2D (PEA)2PbBr4 single crystal (SC) at low temperature (30 °C). Under X-rays, the SC exhibits high light yield of 73226 photons/MeV response time 14 ns, which...
Preliminary theoretical analyses indicate that lattice relaxation may be used to release strain in the FAPbI 3 perovskite warrant both high x-ray detection performance and improved stability. Herein, we demonstrate stable black α-phase single crystals (SCs) realized by engineering via annealing ambient atmosphere. The engineered α-FAPbI SC detector shows almost all best figures of merit including a sensitivity 4.15 × 10 5 μC Gy air −1 cm −2 , low limit 1.1 nGy s resolution 15.9 lp mm short...
We propose a band-splitting strategy driven by breaking the crystal structure symmetry partially replacing Br– ions with larger I– in CsPbBr3 single (SC). Experimental results show that photoelectric properties of band-split SCs are significantly improved due to asymmetric and distinct band splitting, which inhibits ion migration promotes transport carriers, respectively. It is found exhibit higher resistivity, mobility-lifetime product, lower than pristine SCs. Therefore, detectors...
Perovskite single crystals (SC) with strong X-ray absorption and low fabrication costs are expected to be the next generation of materials for detection. However, resistivity serious ion migration three-dimensional (3D) perovskites lead a high leakage current response drift as well carrier mobility radiation luminescence (RL) two-dimensional (2D) perovskites, resulting in output detector. In this study, we successfully combined 3D 2D by epitaxial welding SCs. addition, RL SC sandwich layer...