A5101536672- Conducting polymers and applications
- Semiconductor Lasers and Optical Devices
- Perovskite Materials and Applications
- Photonic and Optical Devices
- Gas Sensing Nanomaterials and Sensors
- Organic Electronics and Photovoltaics
- Organic Light-Emitting Diodes Research
- Semiconductor Quantum Structures and Devices
- Analytical Chemistry and Sensors
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Ferroelectric and Piezoelectric Materials
- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Electrical and Thermal Properties of Materials
- ZnO doping and properties
- Semiconductor materials and devices
- 2D Materials and Applications
- Microwave Dielectric Ceramics Synthesis
- Magnesium Alloys: Properties and Applications
- Hydrogen Storage and Materials
- Electronic and Structural Properties of Oxides
- Advanced Chemical Sensor Technologies
- Silicon Carbide Semiconductor Technologies
- Metallurgical Processes and Thermodynamics
Chongqing University
2023-2024
Nanjing Institute of Technology
2024
Beijing University of Technology
2012-2023
Henan University of Science and Technology
2023
University of Science and Technology Beijing
2023
Nanchang University
2021
PLA Army Engineering University
2018-2021
Tianjin University of Technology
2021
Ministry of Education
2020-2021
Universidad del Noreste
2020-2021
Perovskite solar cells (PSCs) have gained tremendous research interest because of their tolerance defects, low cost, and facile processing. In PSC devices, PbI2 has been utilized to passivate defects at perovskite film surfaces GBs; however, a systematic mechanism in situ passivation for enhancing the efficiency not fully explored. Here, this work, we systematically studies effect precise ratio based on trap density, carrier lifetime, Fermi level, so forth. This study finds appropriate I/Pb...
SnO2-Fe2O3 interconnected nanotubes were obtained by combining the single nozzle electrospinning and thermal treatment methods. The results of scanning electron microscopy revealed special structure ruptures in as-prepared materials. toluene sensing test show that possess excellent gas-sensing properties. sensitivity detecting limit (50 ppb) is 2.0 at optimum operating temperature 260 °C. response recovery times to 1 ppm are about 5 11 s, respectively. Moreover, nanotube gas sensors exhibit...
Abstract In order to improve both performance and stability of perovskite solar cells, a design is provided by combining the advantages high‐efficiency 3D cells (PSCs) long‐term 2D PSCs. A 2D/3D hybrid film with dual (bulk‐ surface‐) passivation approach realized, based on in‐depth discussion guanidine halide (GuX) mechanisms. The can reduce charge carrier losses in bulk prevent decomposition at surface. Based combination ab initio molecular dynamics simulations, Urbach energy, photovoltage...
Abstract As one of the most promising photovoltaic materials, efficiency inorganic–organic hybrid halide perovskite solar cells (PSCs) has reached 25.5% in 2020. However, stability and hysteresis remain primary challenges before it can become a commercial technology. Therefore, those issues have drawn significant attention for applications. In this work, study PSCs improvement is presented based on combination first‐principles simulations, scanning electron microscopy images, time‐dependent...
The micro/nanoscale LiFePO4/graphene composites are synthesized successfully using one-step microwave heating method. One-step can simplify the reduction step of oxide graphene and provide a convenient, economical effective method for preparation composites. structure analysis shows that has high phase purity crystallinity. morphology microspheres micron blocks composed densely aggregated nanoparticles, nanoparticle size shorten diffusion path lithium ions, thus increase ion rate. And sheets...
Lead sulfide colloidal quantum dots (PbS CQDs) have shown great potential in photodetectors owing to their promising optical properties, especially strong and tunable absorption. However, the limitation of specific detectivity (D*) CQD near-infrared (NIR) remains unknown due ambiguous noise analysis. Therefore, a clear understanding current is critically demanded. Here, we elucidate that predominant factor limiting D*, highly dependent on trap densities halide-passivated PbS films carriers...
Abstract Novel metal halide perovskite is proven to be a promising optoelectronic material. However, fabricating microscopic devices still challenging because the soluble with photoresist, which conflicts conventional microfabrication technology. The size of presently reported about 50 µm. Limited by large devices, they cannot readily adopted in fields imaging, display, etc. Herein universal patterned doping method proposed, can realize microscale devices. Rather than method, this study...
The melt structure with fluorine addition has been investigated using molecular dynamics (MD) simulation for the CaO–SiO2–CaF2 and CaO–Al2O3–CaF2 ternary slag system. By analyzing coordination number of network framework, results indicate that Si–O tetrahedron is more stable than Al–O tetrahedron. F− ions are dominantly coordinated Ca2+, there a dynamic equilibrium between Ca2+ anions (O2− F−) in both systems, total (CN) maintained 6 7. analysis distribution oxygen types demonstrates degree...
The dominant mechanisms of the degradation are different. (a) electric field affects spatial distribution mobile ions; (b) light changes ion densities and drives migration; (c) heat results in material decomposition.
Monitoring sulfur hexafluoride (SF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> ) is vital in the electrical insulation sector, where it serves as a key insulator. SF decomposition, caused by operational wear or aging, releases hazardous gases such SO xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> , SOF F and H S, raising safety concerns. However, effectiveness of current nanoscale gas sensors compromised 's protective nature,...
With the explosive growth of web videos in recent years, large-scale Content-Based Video Retrieval (CBVR) becomes increasingly essential video filtering, recommendation, and copyright protection. Segment-level CBVR (S-CBVR) locates start end time similar segments finer granularity, which is beneficial for user browsing efficiency infringement detection especially long scenarios. The challenge S-CBVR task how to achieve high temporal alignment accuracy with efficient computation low storage...