A5021671021- Perovskite Materials and Applications
- Ga2O3 and related materials
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- 2D Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Solid-state spectroscopy and crystallography
- GaN-based semiconductor devices and materials
- Advanced Memory and Neural Computing
- Chalcogenide Semiconductor Thin Films
- Organic Light-Emitting Diodes Research
- Advanced Photocatalysis Techniques
- Luminescence Properties of Advanced Materials
- Optical properties and cooling technologies in crystalline materials
- Ferroelectric and Negative Capacitance Devices
- Hydrogen Storage and Materials
- Physics of Superconductivity and Magnetism
- Electronic and Structural Properties of Oxides
- Superconducting Materials and Applications
- Solid State Laser Technologies
- Superconductivity in MgB2 and Alloys
- VLSI and FPGA Design Techniques
- Semiconductor materials and devices
- Hybrid Renewable Energy Systems
Dongguan University of Technology
2022-2025
Wuhan University
2009-2024
Wuhan Institute of Technology
2023-2024
Shanghai University
2024
Hubei University
2014-2023
China Electric Power Research Institute
2022-2023
Minzu University of China
2022
Anhui University
2022
University of Toledo
2018-2019
Quzhou University
2019
An FTO/ZnO-nanorod/CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>/MoO<sub>3</sub>/Au photodetector exhibited high performance and can achieve self-powered, broadband light detection, detectivity responsivity, robust stability.
Abstract Photodetectors (PDs) based on perovskite nanowires are among the most promising next‐generation photodetection technologies; however, their poor long‐term stability is biggest challenge limiting commercial application. Herein, an ionic liquid, 1‐butyl‐3‐methylimidazolium tetrafluoroborate (BMIMBF 4 ), incorporated as additive into methylammonium lead triiodide (MAPbI 3 ) nanowires; this not only effectively passivates defects to inhibit degradation but also leads formation of...
The scalable and low-cost room temperature (RT) synthesis for pure-iodine all-inorganic perovskite colloidal quantum dots (QDs) is a challenge due to the phase transition induced by thermal unequilibrium. Here, we introduce direct RT strongly confined spontaneous crystallization strategy in Cs-deficient reaction system without polar solvents synthesizing stable tin-lead (Sn-Pb) alloyed QDs, which exhibit bright yellow luminescence. By tuning ratio of Cs/Pb precursors, size confinement effect...
A novel strain sensor based on poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate)–polyvinyl alcohol (PEDOT:PSS–PVA) nanofibers has been fabricated Kapton substrate by electrospinning, and fully packaged encapsulating with a polydimethylsioxane layer. Via controlling the concentration of additive dimethylsulfoxide, electrical conductivity as-spun PEDOT:PSS–PVA nanofiber network can be tuned over wide rang from 4.8 × 10−8 to 1.7 10−5 S cm−1. This kind excellent stability, fast response,...
Lateral zinc oxide (ZnO) nanorod metal-semiconductor-metal ultraviolet detectors with different metal contact were fabricated on glass substrate by a single-step hydrothermal reaction. With the combined effect from ZnO seed layer and an inactive for growth, nanorods could grow laterally aligned between interdigitated electrodes. When growth process is terminated, integration of into function device can be achieved in meantime. The structure modeled as being composed two same Schottky...
Organic-inorganic lead halide perovskite microcrystal (MC) films are attractive candidates for fabricating high-performance large-area self-powered photodetectors (PDs) because of their lower trap state density and higher carrier mobility than polycrystalline counterparts more suitability synthesizing large lateral area single-crystal counterparts. Here, we report on the fabrication all-inorganic CsPbBr3 MC PDs with high detectivity, using a modified solution synthesis method. The MCs up to...
Compared with a single nanowire (NW) or NW array, the simpler preparation process of an network (NWN) enables it to be fabricated in large-scale, flexible, and wearable applications photodetectors (PDs). However, NWN behaves many microinterfaces (MIs) between NWs, seriously limiting device performance stability. Here, we demonstrate welding strategy for MAPbI3 NWN, which enhances crystallinity radial transmission photogenerated carriers, leading better ultrahigh Our PDs by using showed...
A self-powered, visible-blind ultraviolet photodetector based on n-ZnO nanorods/i-MgO/p-GaN structure light-emitting diode.
Abstract Perovskite photodetectors (PDs) with tunable detection wavelength have attracted extensive attention due to the potential application in field of imaging, machine vision, and artificial intelligence. Most perovskite PDs focus on I‐ or Br‐based materials their easy preparation techniques. However, main photodetection capacity is situated visible region because narrower bandgap. Cl‐based wide bandgap perovskites, such as CsPbCl 3 , are scarcely reported bad film quality spin‐coated...
Abstract Inorganic halide perovskite (HP)‐based photodetectors (PDs) have exhibited fast response speed and high responsivity, but with low detectivity due to the dark current of devices. Additionally, intrinsic instability HPs interface deterioration originating from ion migration inhibit their practical applications severely. A tunneling organic layer is introduced solve both these problems. Light‐induced charge carriers can flow across interfacial (poly(methyl methacrylate), PMMA)...
The carrier transport layer with reflection reduction morphology has attracted extensive attention for improving the utilization of light. Herein, we introduced single-layer hollow ZnO hemisphere arrays (ZHAs) behaving light trapping effect as electron in perovskite photodetectors (PDs). ZHAs can not only reduce reflection, but also widen angle effective incident and especially transfer distribution optical field from ZnO/FTO interface to active confirmed by 3D finite-difference time-domain...
Abstract In recent years, Pb-free CsSnI 3 perovskite materials with excellent photoelectric properties as well low toxicity are attracting much attention in devices. However, deep level defects , such high density of tin vacancies, structural deformation SnI 6 − octahedra and oxidation Sn 2+ states, the major challenge to achieve high-performance -based devices good stability. this work, defect passivation method is adopted solve above issues, ultra-stable nanowires (NWs) photodetectors...
Lead halide perovskite single crystals have attracted wide interest in the field of X-ray detection due to their excellent photophysical properties. However, inherent toxicity and high thickness restrict applications flexible devices. In this paper, designing a micronanometer-scale detector based on all-inorganic lead-free CsAg2I3 (CAI) crystal microbelts (MBs) has addressed above issues. These CAI MBs can be synthesized various substrates with quality stability. Based characteristics MBs,...
Abstract Weak‐light imaging holds immense significance in various applications. Recently, there has been significant research focused on 2D perovskites for photodetectors (PDs), owing to their superior photoelectric properties. However, the utilization of high‐performance weak‐light detection remains limited, and is a notable absence demonstration ultraviolet (UV) imaging. Herein, high‐sensitive UV detectors with an ultra‐low limit are demonstrated, utilizing perovskite (PA) 2 PbBr 4 (PPB)...
Two-dimensional (2D) Dion-Jacobson (DJ) perovskites typically outperform Ruddlesden-Popper (RP) analogs in terms of photodetection (PD). However, the mechanism behind this enhanced performance remains elusive. Theoretical calculations for elucidating interlayer spacer conformation-induced multiple hydrogen bonds 2D perovskite are presented, along with synthesis DPAPbBr
Abstract Although high‐entropy materials have garnered extensive attention due to their substantially enhanced performance, formation generally demands prolonged high‐temperature synthetic processes. Moreover, research on entropy‐stabilized halide perovskite (ESHP) semiconductor colloidal nanocrystals (NCs) is scarce. Herein, a highly efficient and rapid room temperature (RT) approach in air proposed, involving the concurrent incorporation of multi‐metal cations for synthesis high‐quality...
Abstract Precise control over halide perovskite crystallization is pivotal for realizing efficient solar cells. Here, we introduce a strategy utilizing in-situ-formed oxide-based ABX 3 -structured seeds to regulate and growth. Introducing potassium stannate into precursors triggers spontaneous reaction with lead iodide, producing iodide stannate. Potassium effectively passivates defects, while PbSnO (ABX -structured), exhibiting 98% lattice match, acts as template seed. This approach...
We reported first photodetectors based on a CH3NH3PbI3/GaN heterojunction with or without an electron transport layer (ETL). Through the investigation, device ETL showed good sensitivity, high stability, and repeatability. Particularly, when C60 was applied as ETL, self-powered characteristic stability. The best 6 nm displayed on/off ratio of greater than 5000, peak responsivity 0.198 A/W, detectivity 7.96 × 1012 cm Hz1/2/W, which is comparable other reports. performance mentioned above...
A self-powered photodetector based on a ZnO nanoarrays/CdS/GaN structure with responsivity as high 176 mA W<sup>−1</sup> at 300 nm.
Abstract Cesium lead bromide (CsPbBr 3 ) perovskite photodetectors (PDs) are attractive for applications in visible light communication (VLC) due to ultra‐high detectivity and fast response speed. However, the fabrication of high‐quality CsPbBr polycrystalline films using solution‐based process is very challenging. Due low solubility CsBr precursor solutions, solution‐processed typically discontinuous porous, hindering performance resulting PDs. Herein, a facile modified sequential...
All-inorganic Bi-based perovskites have attracted much attention due to their excellent stability, environmentally friendly, and low-cost solution processability. However, the large exciton binding energy small light absorption coefficient, performance of perovskite photodetector (PD) is far behind traditional Pb-based PDs. In this work, lead-free all-inorganic Cs3Bi2I9 (CBI) single crystal was synthesized by a space-confined antisolvent-assisted crystallization method for high-performance,...