A5078499081- Perovskite Materials and Applications
- Carbon and Quantum Dots Applications
- Luminescence and Fluorescent Materials
- Quantum Dots Synthesis And Properties
- 2D Materials and Applications
- Diamond and Carbon-based Materials Research
- Nanocluster Synthesis and Applications
- Luminescence Properties of Advanced Materials
- ZnO doping and properties
- Chalcogenide Semiconductor Thin Films
- Organic Light-Emitting Diodes Research
- Gas Sensing Nanomaterials and Sensors
- Ga2O3 and related materials
- Graphene research and applications
- Nanowire Synthesis and Applications
- Advanced Photocatalysis Techniques
- MXene and MAX Phase Materials
- Advanced Sensor and Energy Harvesting Materials
- Advanced Fiber Laser Technologies
- Mechanical and Optical Resonators
- Quantum optics and atomic interactions
- Nanoplatforms for cancer theranostics
- Spectroscopy and Laser Applications
- Metal and Thin Film Mechanics
- GaN-based semiconductor devices and materials
Zhengzhou University
2016-2025
Henan Academy of Sciences
2023-2025
Diamond Materials (United States)
2025
Zhengzhou University of Light Industry
2024
Changchun Institute of Optics, Fine Mechanics and Physics
2010-2023
Chinese Academy of Sciences
2010-2023
Shanghai Fudan Microelectronics (China)
2021
Fudan University
2021
State Key Laboratory of ASIC and System
2021
University of Chinese Academy of Sciences
2018
With the rapid development of flexible wearable electronics, a piezoresistive sensor with low detection limit and wide strain sensing range turns out to be great challenge for its application in this field. Here, cracked cellulose nanofibril/silver nanowire (CA) layer-coated polyurethane (PU) sponge was acquired through simple dip-coating process followed by precompression treatment. The electrical conductivity mechanical property conductive CA@PU could effectively tuned changing number. As...
Broadband photodetectors are of great importance for numerous optoelectronic applications. Two-dimensional (2D) tungsten disulfide (WS2), an important family member transition-metal dichalcogenides (TMDs), has shown potential high-sensitivity photodetection due to its extraordinary properties. However, the inherent large bandgap WS2 and strong interface recombination impede actualization broadband photodetectors. Here, we demonstrate fabrication ultrabroadband WS2/Ge heterojunction...
Recently, a pressing requirement of solid-state lighting sources with high performance and low cost has motivated increasing research in metal halide perovskites. However, the relatively emission efficiency poor operation stability perovskite light-emitting diodes (LEDs) are still critical drawbacks. In this study, strategy solution-processed all-inorganic heterostructure was proposed to overcome issues facing challenges LEDs. Solution-processed n-ZnO nanoparticles p-NiO used as carrier...
Abstract Van der Waals (vdW) heterodiodes based on two-dimensional (2D) materials have shown tremendous potential in photovoltaic detectors and solar cells. However, such 2D devices are limited by low quantum efficiencies due to the severe interface recombination inefficient contacts. Here, we report an efficient MoS 2 /AsP vdW hetero-photodiode utilizing a unilateral depletion region band design narrow bandgap AsP as effective carrier selective contact. The is verified via both Fermi level...
Currently, the blue perovskite light-emitting diodes (PeLEDs) suffer from a compromise in lead toxicity and poor operation stability, most previous studies have struggled to meet crucial NTSC standard. In this study, electrically driven deep-blue LEDs (∼445 nm) based on zero-dimensional (0D) Cs3Cu2I5 nanocrystals (NCs) were demonstrated with color coordinates of (0.16, 0.07) high external quantum efficiency ∼1.12%, comparable best-performing lead-halide perovskites. Encouraged by remarkable...
Fluorescent carbon dots (CDs) with a size smaller than 10 nm, excellent biocompatibility, and low to no cytotoxicity are considered as rising star in nanomedicine. In this report, for the first time we demonstrate that green-emitting CDs carboxyl-rich surface can be employed trackable drug delivery agent localized cancer treatment mouse model. The conjugated drug, Doxorubicin (DOX), via non-covalent bonding, utilizing native carboxyl groups on amine moiety DOX molecules. pH difference...
Abstract White light‐emitting diodes (WLEDs) are promising next‐generation solid‐state light sources. However, the commercialization route for WLED production suffers from challenges in terms of insufficient color‐rendering index (CRI), color instability, and incorporation rare‐earth elements. Herein, a new two‐component strategy is developed by assembling two broadband emissive materials with self‐trapped excitons (STEs) high CRI stable WLEDs. The addresses effectively challenging issues...
Great successes have been achieved in developing perovskite light-emitting devices (LEDs) with blue, green, red, and near-infrared emissions. However, as key optoelectronic devices, yellow-colored LEDs remain challenging, mainly due to the inevitable halide separation mixed perovskites under high bias, causing undesired color change of devices. In addition this color-missing problem, intrinsic toxicity poor stability conventional lead-halide also restrict their practical applications. We...
Polarization-sensitive ultraviolet (UV) photodetection is of great technological importance for both civilian and military applications. Two-dimensional (2D) group-10 transition-metal dichalcogenides (TMDs), especially palladium diselenide (PdSe2), are promising candidates polarized due to their low-symmetric crystal structure. However, the lack an efficient heterostructure severely restricts applications in UV-polarized photodetection. Here, we develop a PdSe2/GaN Schottky junction by situ...
The manipulation of magnetism provides a unique opportunity for the development data storage and spintronic applications. Until now, electrical control, pressure tuning, stacking structure dependence, nanoscale engineering have been realized. However, as dimensions are decreased, decrease ferromagnetism phase transition temperature (Tc) is universal trend in ferromagnets. Here, we make breakthrough to realize synthesis 1 2 unit cell (UC) Cr2Te3 discover room-temperature two-dimensional...
Recently, substantial progress has been made in perovskite-based light-emitting devices (LEDs) with near-infrared, red, green, and blue emissions. However, short-wavelength perovskite LEDs targeted at violet emission remain a great challenge. Moreover, the majority of previously reported were focused on conventional lead halide perovskites. In this study, for first time, electrically driven (408 nm) from lead-free Cs3Sb2Br9 quantum dots (QDs) was demonstrated room temperature, shortest...
Being capable of sensing broadband infrared (IR) light is vitally important for wide-ranging applications from fundamental science to industrial purposes. Two-dimensional (2D) topological semimetals are being extensively explored IR detection due their gapless electronic structure and the linear energy dispersion relation. However, low charge separation efficiency, high noise level, on-chip integration difficulty these significantly hinder further technological applications. Here, we...
An electrically modulated single-/dual-color imaging photodetector with fast response speed is developed based on a small molecule (COi 8DFIC)/perovskite (CH3 NH3 PbBr3 ) hybrid film. Owing to the type-I heterojunction, device can facilely transform dual-color images single-color by applying bias voltage. The exhibits two distinct cut-off wavelengths at ≈544 nm (visible region) and ≈920 (near-infrared region), respectively, without any power supply. Its peak responsivities are 0.16 A W-1...
We demonstrated a stable and spectrum-selective self-powered UV photodetector based on lead-free Cs<sub>3</sub>Cu<sub>2</sub>I<sub>5</sub> films with excellent photodetection performance.
Low-dimensional Te-based photodetectors exhibit blackbody response and achieve record-set performance metrics.
CsPbBr<sub>3</sub> QDs/silica composites with substantially improved stability were applied as the color-converting layer for high-performance white LED fabrication.
Flexible scintillator screens with environmental stability, high sensitivity, and low cost have emerged as candidates for X-ray imaging applications. Here, a large-scale cost-efficient solution synthesis of the vacancy-ordered double perovskite Cs2 ZrCl6 , which is characterized by thermal activation delayed fluorescence (TADF) dominated triplet emission under irradiation, demonstrated. The large Stokes shift efficient luminescence collection TADF effectively ensure light outcoupling...
In this work, an effective strategy through doping of univalent Na+ ions, which are stable against oxidation and reduction, was proposed to enhance the emission efficiency stability orthorhombic CsPbBr3 nanocrystals (NCs). Compared with fresh NCs, a better color purity higher photoluminescence quantum yield were achieved, accompanied gradual blue shift peak increasing ratio. On one hand, passivation effect substantially reduces nonradiative trap centers in NCs. other density functional...
The various luminescent properties of carbon nanodots (CDs) reveal fascinating applications in several areas. Here, bright and multicolor chemiluminescence (CL) is realized from CDs, whose CL quantum yield can be optimized by adjusting the energy level alignment between CDs 1,2-dioxetanedione intermediate generated reaction peroxalate hydrogen peroxide. A 9.32 × 10
We demonstrated a polarization-sensitive and flexible ultraviolet photodetector based on one-dimensional CsCu<sub>2</sub>I<sub>3</sub> nanowires with photocurrent anisotropy ratio of 3.16.
Next-generation mid-infrared (MIR) imaging chips demand free-cooling capability and high-level integration. The rising two-dimensional (2D) semimetals with excellent infrared (IR) photoresponses are compliant these requirements. However, challenges remain in scalable growth substrate-dependence for on-chip Here, we demonstrate the inch-level 2D palladium ditelluride (PdTe2) Dirac semimetal using a low-temperature self-stitched epitaxy (SSE) approach. low formation energy between two...