A5101791082- Software Engineering Research
- Distributed and Parallel Computing Systems
- Gold and Silver Nanoparticles Synthesis and Applications
- Interconnection Networks and Systems
- Parallel Computing and Optimization Techniques
- Software Engineering Techniques and Practices
- Nanoporous metals and alloys
- GaN-based semiconductor devices and materials
- Anodic Oxide Films and Nanostructures
- Software Testing and Debugging Techniques
- Software System Performance and Reliability
- Web Data Mining and Analysis
- Natural Language Processing Techniques
- 2D Materials and Applications
- Optical properties and cooling technologies in crystalline materials
- ZnO doping and properties
- Ga2O3 and related materials
- Advanced Semiconductor Detectors and Materials
- Plasmonic and Surface Plasmon Research
- Semiconductor Quantum Structures and Devices
- Quantum Dots Synthesis And Properties
- Semiconductor materials and devices
- Strong Light-Matter Interactions
- Advanced Fiber Optic Sensors
- Topic Modeling
Peking University
2012-2025
Collaborative Innovation Center of Quantum Matter
2021-2025
Huawei Technologies (China)
2024-2025
State Key Laboratory of Artificial Microstructure and Mesoscopic Physics
2025
Harbin University of Science and Technology
2020
Collaborative Innovation Center of Advanced Microstructures
2018
Nanjing University
2018
Inspur (China)
2014
Ministry of Education of the People's Republic of China
2009-2013
Beijing National Laboratory for Molecular Sciences
2012
First Page
Bismuth triiodide, BiI3, is one of the promising 2D layered materials from family metal halides. The unique electronic structure and properties make it an attractive material for room-temperature gamma/X-ray detectors, high-efficiency photovoltaic absorbers, Bi-based organic-inorganic hybrid perovskites. Other possibilities including optoelectronic devices optical circuits are envisioned but rarely experimentally confirmed yet. Here, we report synthesis vertical BiI3 nanoplates using...
In modern software development, developers rely on version control systems like Git to collaborate in the branch-based development workflow. One downside of this workflow is conflicts occurred when merging contributions from different developers: these are tedious and error-prone be correctly resolved, reducing efficiency collaboration introducing potential bugs. The situation becomes even worse, with popularity refactorings evolution, because current tools (usually based text or tree...
The dark current mechanism of extended wavelength InxGa1−xAs photo-detectors is still a debated issue. In this paper, the deep-level transient spectroscopy (DLTS) and characteristics InxGa1−xAs/InP detectors are investigated. Using trap parameters obtained from DLTS measurement, device simulations current-voltage carried out by Silvaco Altas. results reveal that at low reverse bias voltage associated with deep level induced assisted tunneling Shockley-Read-Hall generation mechanism....
Abstract Phonon-assisted upconverted emission is the heart of energy harvesting, bioimaging, optical cryptography, and refrigeration. It has been demonstrated that emerging two-dimensional (2D) semiconductors can provide an excellent platform for efficient phonon-assisted upconversion due to enhanced transition strength phonon-exciton interaction 2D excitons. However, there little research on further enhancement excitonic in semiconductors. Here, we report multiphoton excitons doubly...
Effective control of dislocation climb is fundamental interest and practical importance in tuning the mechanical electronic properties semiconductors. However, it remains a big challenge due to lack clear understanding its inherent mechanism, particular, nitride In this Letter, atomic-scale process single GaN observed for first time, which undergoes an alternating five- nine-atomic-ring transformation. Combined with first-principles calculations, we reveal that jogs exhibiting asymmetric...
Freestanding gallium nitride (GaN) membranes can extend the applications of GaN to more functional devices through heterogeneous integration. Two-dimensional (2D) materials provide a versatile platform for preparation freestanding ultrathin membrane. However, fabrication membrane with aid 2D presents challenge at GaN/2D interface: keeping strong epitaxial interactions epitaxy while contrarily ensuring weak intact exfoliation. Here, an approach achieving is demonstrated via on chemical vapor...
Micro-LEDs, especially small-size micro-LEDs, have attracted increasing attention for high-resolution displays and high-speed visible light communications in recent years. However, the efficiency of micro-LEDs sharply decreases with decreasing device size due to sidewall damage resulting from mesa etching. Therefore, implementation a low-damage pixelization technique is essential enhancing performance micro-LEDs. In this Letter, ion implantation (IIP) was employed improve InGaN green...
Code generation models based on the pre-training and fine-tuning paradigm have been increasingly attempted by both academia industry, resulting in well-known industrial such as Codex, CodeGen, PanGu-Coder. After being pre-trained a large-scale corpus of code, model is further fine-tuned with datasets specifically for target downstream task, e.g., generating code from natural language description. The generated can be classified into two types: standalone function, i.e., function that invokes...
The development of high-voltage GaN-on-Si power devices is hindered by vertical breakdown buffer layer. Implementing a floating substrate configuration could improve voltage. Despite this advantage, with exhibit severe dynamic RON degradation due to the back-gating effect and consequent trapping. In work, 900-V device demonstrated on Si using active passivation p-GaN gate HEMT technology (AP-HEMT). As connected gate, AP-HEMT facilitates effective hole injection in both passivation, thereby...
The interparticle spacing of the surface-enhanced Raman scattering (SERS) substrate has a strong relationship with its enhancement factor (EF). How to precisely adjust gap and generate SERS substrates excellent quality high reliability by facile way is still challenge. Here, we propose convenient environmentally friendly method synthesize large-area Ag composed either monodisperse nanoparticles (NPs), NP-linked nanowires (NWs), NW-weaved mesoporous membrane, or NP-aggregates simply...
We fabricate 2.6 μm InGaAs photodetectors by MBE technology and study its dark current mechanisms. Deep-level transient spectroscopy (DLTS) demonstrates a deep-level trap located at Ec - 0.25 eV in the absorption layer. Using parameters, model is constructed device simulation generates characteristic which agrees well with experimental data. The suggests that low reverse voltage dominated Shockley-Read-Hall (SRH) trap-assisted tunneling (TAT). Furthermore, it predicts some basic rules for...
Tuning of the localized surface plasmon resonance (LSPR) nanoporous metals is at heart manipulating light within extremely small volumes for implementation optical devices nanoscale. In this work, gold-alumina core-shell films with fixed gold skeletons and different thicknesses alumina shells are fabricated using chemical corrosion subsequent atomic layer deposition. Optical transmission composite can be tailored through LSPR excitations three-dimensional skeleton alterable as covering...
In collaborative software development, it is considered to be a best practice submit code changes as sequence of cohesive commits, each which records the work result specific development activity, such adding new feature, bug fixing, and refactoring. However, rather than following this practice, developers often set loosely-related serving for different activities composite commit, due tedious manual lack effective tool support decompose tangled changeset. Composite commits obfuscate change...
Widely shifting localized surface plasmon resonance (LSPR) bands of nanoporous metals is essential for light manipulation within small volumes. In this work, gold-titania core-shells fabricated by atomic layer deposition exhibit tunable LSPR gold skeletons in comparison with gold-alumina developed before. Extremely large red-shift band from 537 to 751 nm results high refractive index titania and its dielectric medium dependence LSPR, the well-controlled thickness shell at nanometer scale...
We report on the measurement of sound pressure in water utilizing modulation optical reflectivity at end an fiber. First, we develop a new experimental setup comprising low-coherent light source to suppress interference noise. Then, formulate relation between and reflected intensity, theoretically analyze performance this method with emphasis directivity sensitivity.
Code merging plays an important role in collaborative software development. However, it is often tedious and error-prone for developers to manually resolve merge conflicts, especially when there are many conflicts after long-lived branches or parallel versions. In this paper, we present SoManyConflicts, a language-agnostic approach help systematically, by utilizing their interrelations (e.g., dependency, similarity, etc.). SoManyConflicts employs graph representation model these provides 3...