Zhengwei Xu

ORCID: 0000-0002-2268-3186
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About
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Research Areas
  • Perovskite Materials and Applications
  • 2D Materials and Applications
  • Chalcogenide Semiconductor Thin Films
  • Physics of Superconductivity and Magnetism
  • Quantum Dots Synthesis And Properties
  • Magnetic properties of thin films
  • Solid-state spectroscopy and crystallography
  • Electrocatalysts for Energy Conversion
  • Graphene research and applications
  • Advanced Condensed Matter Physics
  • Metalloenzymes and iron-sulfur proteins
  • MXene and MAX Phase Materials
  • Magnetic and transport properties of perovskites and related materials
  • Microbial Fuel Cells and Bioremediation
  • Nanoplatforms for cancer theranostics
  • Corrosion Behavior and Inhibition
  • Magnetic Properties of Alloys
  • Advanced materials and composites
  • Nuclear Materials and Properties
  • Hydrogen embrittlement and corrosion behaviors in metals
  • Supramolecular Self-Assembly in Materials
  • Rare-earth and actinide compounds
  • Terahertz technology and applications
  • Intermetallics and Advanced Alloy Properties
  • Fuel Cells and Related Materials

Hangzhou Normal University
2024-2025

Nanchang Hangkong University
2025

Hunan University
1996-2022

Jiangxi University of Science and Technology
2020

Abstract Stability of perovskite-based photovoltaics remains a topic requiring further attention. Cation engineering influences perovskite stability, with the present-day understanding impact cations based on accelerated ageing tests at higher-than-operating temperatures (e.g. 140°C). By coupling high-throughput experimentation machine learning, we discover weak correlation between high/low-temperature stability stability-reversal behavior. At high temperatures, increasing organic cation...

10.1038/s41467-021-22472-x article EN cc-by Nature Communications 2021-04-13

Substitutional doping has been proven to be an effective route engineer band gap, transport characteristics, and magnetism in transition metal dichalcogenides. Herein, we demonstrate substitutional of monolayer tungsten disulfide (WS2) with Nb via the chemical vapor deposition technique. Scanning transmission electron microscopy confirms that successfully substituted W atom WS2 lattice. Moreover, photoluminescence indicates a significant red shift when different concentrations are...

10.1021/acs.chemmater.9b00913 article EN Chemistry of Materials 2019-04-16

Self-trapped excitons (STEs) have recently been observed in several metal halide perovskites (MHPs), especially low-dimensional ones. Despite studies that shown factors like dopant, chemical composition, lattice distortion, and structural electronic dimensionality may all affect the self-trapping of excitons, a general understanding their mechanism formation MHPs is lacking. Here, we study intrinsic defect-induced three-, two-, one-dimensional MHPs. We find whether free could be trapped...

10.1021/acs.jpclett.1c02291 article EN The Journal of Physical Chemistry Letters 2021-10-22

Abstract Plant chloroplasts have a highly compartmentalized interior, essential for executing photocatalytic functions. However, the construction of reaction compartment similar to in inorganic–biological hybrid systems (IBS) has not been reported. Drawing inspiration from chloroplast and phenomenon liquid–liquid phase separation, herein, new strategy is first developed constructing subcellular system through separation technology living cells. Photosensitizers vivo expressed hydrogenases...

10.1002/advs.202400097 article EN cc-by Advanced Science 2024-04-04

Allosteric modulation of protein function, which involves effector binding triggering distant conformational changes, is crucial for cellular and metabolic control. However, achieving tunable control, structural diversity, precise intracellular regulation remains challenging. Here, we designed dynamic supramolecular assemblies driven by enzyme-substrate interactions antioxidant in cells. Using a glutathione S-transferase modified with cysteine mutation (GSTK77C), engineered an molecule...

10.1021/acs.nanolett.5c00296 article EN Nano Letters 2025-03-11

Dual-main-phase (DMP) magnets, a promising approach for the efficient utilization of high-abundance rare earth elements, exhibit enhanced coercivity compared to single-main-phase (SMP) magnets. This study demonstrates that DMP magnet exhibits 43 kA/m increase over an SMP equivalent composition. Microstructural characterization reveals two main-phase grains with distinct core–shell structures in magnet. Micromagnetic simulations indicate increased Nd content enhances anisotropy field shells...

10.1063/5.0242694 article EN Applied Physics Letters 2025-03-01

Revealing the origin of self-trapped excitons is a prerequisite for further improving photoluminescence efficiency low-dimensional organic perovskites. Here, microscopic formation mechanism intrinsic in one-dimensional (1D) C4N2H14PbX4 (X = Cl, Br and I) systems investigated, polarization-luminescence relationship established. Our results show that 1D-C4N2H14PbX4 has low electronic dimension (flat band characteristics), which facilitates excitons. The potential well formed by local...

10.1039/d2cp01315k article EN Physical Chemistry Chemical Physics 2022-01-01

Alloying structurally similar perovskites to form mixed-cation lead iodide perovskites, e.g., ${\mathrm{Cs}}_{x}\mathrm{F}{\mathrm{A}}_{(1\ensuremath{-}x)}\mathrm{Pb}{\mathrm{I}}_{3}, \mathrm{M}{\mathrm{A}}_{x}\mathrm{F}{\mathrm{A}}_{(1\ensuremath{-}x)}\mathrm{Pb}{\mathrm{I}}_{3}$, and ${\mathrm{Cs}}_{x}\mathrm{M}{\mathrm{A}}_{y}\mathrm{F}{\mathrm{A}}_{(1\ensuremath{-}x\ensuremath{-}y)}\mathrm{Pb}{\mathrm{I}}_{3}$, could improve the performance of perovskite-based solar cells light-emitting...

10.1103/physrevmaterials.4.095401 article EN Physical Review Materials 2020-09-09

Hydrogen gas produced by electrolysis has been considered as an excellent alternative to fossil fuels. Developing non-noble metal catalysts with high electrocatalytic activities is effective way reduce the cost of hydrogen production. Recently, black phosphorus (BP) based materials have reported good potential electrocatalysts for evolution reaction (HER). Herein, we systematically study catalytic performance monolayer BP (phosphorene) and several chemically modified phosphorenes (N/S/C/O...

10.1088/1361-648x/ab482b article EN Journal of Physics Condensed Matter 2019-09-26

The antimony trisulfide (Sb2S3) has been theoretically predicted to have various merits in exploiting high-performance thin-film solar cells and attracted intense attention. However, the power conversion efficiency of Sb2S3-based is yet be satisfactory experiments origin large open circuit voltage (VOC) loss still a controversial question. Based on first-principles calculations, we systematically analyzed excited state behavior dynamics images carriers Sb2S3 materials. Our calculations...

10.1021/acs.jpclett.2c01971 article EN The Journal of Physical Chemistry Letters 2022-08-22

All-inorganic perovskites have gained considerable significance. Despite their superior thermal robustness, poor phase stability has rendered inorganic adverse. Herein, on the basis of first-principles calculations, we find that incorporation rubidium (Rb) and potassium (K) in an appropriate ratio will stabilize CsPbI2Br considerably, which cooperative interactions between Rb/K, I Br play important role. Besides, it is verified 2D orthorhombic CsPbI3 with a thickness ∼1 nm exhibits...

10.7567/1882-0786/ab1a55 article EN Applied Physics Express 2019-04-17
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