A5061605020- 2D Materials and Applications
- Electronic and Structural Properties of Oxides
- Perovskite Materials and Applications
- Magnetic and transport properties of perovskites and related materials
- MXene and MAX Phase Materials
- Advanced Photocatalysis Techniques
- Chalcogenide Semiconductor Thin Films
- Ga2O3 and related materials
- Gas Sensing Nanomaterials and Sensors
- Ferroelectric and Piezoelectric Materials
- Quantum Dots Synthesis And Properties
- Graphene research and applications
- Semiconductor materials and devices
- Luminescence Properties of Advanced Materials
- Electrocatalysts for Energy Conversion
- Machine Learning in Materials Science
- Advanced Materials Characterization Techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Quantum and electron transport phenomena
- Copper-based nanomaterials and applications
- Thin-Film Transistor Technologies
- Quantum, superfluid, helium dynamics
- Nanowire Synthesis and Applications
- Silicon and Solar Cell Technologies
- Atomic and Subatomic Physics Research
Changchun University of Science and Technology
2020-2025
Hebei University
2016-2020
Photocatalytic hydrogen evolution (PHE) is sustainable and environmentally friendly. Titanium dioxide (TiO2) commonly chosen as a photocatalyst of PHE due to its non-toxicity, robust stability, superior photocatalytic activity. However, the efficacy TiO2 restricted by rapid electron–hole pair recombination, limited electron mobility, sluggish surface reactions. To address these issues, we have synthesized Ni–P alloy onto (Ni–P/TiO2) using safe efficient photo-deposition method, thereby...
2D material structures have drawn much attention because of the unique characteristics carriers confined in planes. Various been fabricated for high‐performance optoelectronic devices. Herein, via first principles, lateral heterostructures (LHSs) based on antimony (Sb) and bismuth (Bi) are predicted band affected under strain calculated. For Sb/Bi LHSs, zigzag armchair atomic configurations considered. By altering number atoms two sides heterostructures, LHSs exhibit narrow bandgaps. Moreover,...
A heterojunction interface engineering aimed at improving the performance of all‐inorganic lead halide perovskite photodetectors (PDs) is demonstrated by coupling two‐dimensional (2D) MoS 2 materials with CsPbBr 3 used in chemical vapor deposition method situ‐grown. The carrier extraction layer facilitates electron injection, while large injection barrier /MoS depletion keeps holes layer, resulting effective separation photogenerated carriers interface. Moreover, photoluminescence quenching...
All‐inorganic lead halide perovskite CsPbBr 3 has received a lot of attention in the field optoelectronic devices due to its high absorption coefficient and photoelectric conversion efficiency. Using heterojunction as core photodetector (PD) transform optical signal into an electrical compensates for deficiencies using single material. Here, simple efficient chemical vapor deposition (CVD) method is used fabricate /MoO /ITO PD with superior photoresponse properties, including...
Based on the first-principles method, structural stability and contribution of point defects such as O, Sr or Ti vacancies two-dimensional electron gas n- p-type LaAlO3/SrTiO3 interfaces are investigated. The results show that O at have much lower formation energies, n-type more stable than ones under O-rich conditions. calculated densities states indicate act donors give a significant compensation to hole carriers, resulting in insulating behavior interfaces. In contrast, tend trap...
As an n-type wide band gap nanomaterial (2.7-2.9 eV), In<sub>2</sub>O<sub>3</sub> has important application in gas sensing, light-emitting diodes, semiconductor lasers, medical imaging and other fields. Research shows that the luminous efficiency of can be improved through rare earth doping. Eu<sup>3+</sup>, Er<sup>3+</sup> doping been widely studied, but there is no relevant explanation for transition mechanism. In this paper, formation energy Eu<sup>3+</sup> doped different site as a...
Abstract As a typical transition-metal dichalcogenide, MoS 2 has drawn wide attention due to its good stability and excellent physicochemical properties, making it suitable for visible-region optoelectronic devices. To expand application, bandgap engineering via heterostructure, thus far, was conventionally employed tune the band gap. However, this strategy disadvantage that energy levels of bands do not show obvious changes compared isolated components, limiting range applications. Here, we...
Abstract Two‐dimensional molybdenum disulfide (2D MoS 2 ) shows great promise as a surface‐enhanced Raman scattering (SERS) substrate due to its strong exciton resonance. However, the inert basal plane limits performance of SERS. In this work, strategy is proposed for one‐step synthesis atomically defect‐rich . The study first reveals that NaCl plays two‐stage role in growth process, where initially promotes rapid large previously reported, and then formation atomic defects dominated by...
Molybdenum disulfide (MoS2) is a promising electrocatalyst for the hydrogen evolution reaction (HER) due to excellent stability and low cost. However, utilization in electrocatalytic constrained by inherent shortcomings, including fewer edge active sites, poor dispersion, electrical conductivity. In this work, MoS2 was compounded with carbon nanotubes (CNTs), which are known their high specific surface area These CNTs, laden oxygen-containing functional groups, provided nucleation sites that...
We report a structural design of ultrathin perovskite solar cells based on conformal structure at the rear surface for potential applications in both single-junction and tandem cells. The light transmittances front surfaces are calculated wavelength range 300–800 nm via finite difference time domain numerical simulation method. Compared with reference cell, significant photocurrent density enhancement 27.5% 29.7% achieved when ratios height to width fluorine doped tin oxide nanoblock 2 3,...
Using the first-principles method, we investigate thermal stability of cation point defects in LaAlO3 bulk and films. The calculated densities states indicate that vacancies antisites act as acceptors. formation energies show are energetically favorable under O-rich conditions, while AlLa stable reducing atmosphere. However, same behavior does not appear case For LaO-terminated films, La or Al remain O-deficient conditions. an AlO2-terminated surface, condition interstitial atom is repelled...
In this work, the electric and optical properties of few layer MoS2 were systematically investigated theoretically experimentally, especially monolayer bilayer. Firstly, effects different pseudopotentials on calculation results have been investigated. It indicates that normal-conserving pseudopotential is suitable for accurate calculations electronic properties. Then, deep understanding photoluminescence mechanism MoS2, structure calculated by first-principles with pseudopotential. The...