A5017780673- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Semiconductor Quantum Structures and Devices
- Phase-change materials and chalcogenides
- Semiconductor materials and devices
- Glass properties and applications
- Semiconductor materials and interfaces
- ZnO doping and properties
- Solid-state spectroscopy and crystallography
- Luminescence Properties of Advanced Materials
- Solid State Laser Technologies
- Photonic and Optical Devices
- Nanowire Synthesis and Applications
- Advanced Photocatalysis Techniques
- Shape Memory Alloy Transformations
- Ga2O3 and related materials
- Conducting polymers and applications
- Ferroelectric and Piezoelectric Materials
- Copper-based nanomaterials and applications
- Electronic and Structural Properties of Oxides
- Silicon Nanostructures and Photoluminescence
- Force Microscopy Techniques and Applications
- Optimal Power Flow Distribution
- Electric Power System Optimization
Shaanxi Normal University
2019-2024
Beijing Academy of Quantum Information Sciences
2023-2024
China Agricultural University
2010-2024
State Key Laboratory of Animal Nutrition
2023-2024
Kunming University of Science and Technology
2022
Xi'an Institute of Optics and Precision Mechanics
2018-2022
University of Chinese Academy of Sciences
2015-2022
Xiamen University of Technology
2022
Ministry of Education of the People's Republic of China
2020-2022
Chinese Academy of Sciences
2022
Abstract With a certified efficiency as high 25.2%, perovskite has taken the crown highest thin film solar cell material. Unfortunately, serious instability issues must be resolved before cells (PSCs) are commercialized. Aided by theoretical calculation, an appropriate multifunctional molecule, 2,2‐difluoropropanediamide (DFPDA), is selected to ameliorate all issues. Specifically, carbonyl groups in DFPDA form chemical bonds with Pb 2+ and passivate under‐coordinated defects. Consequently,...
Abstract Water corrosion and dendrite growth seriously break the zinc plating/stripping process at electrolyte/anode interface, causing instability of metal anode aqueous batteries. Herein, a self‐consistent hydrophobic interface orderly channels are assembled by three quaternary ammonium cationic surfactants, which can block water erosion. Of particular interest, experimental results combined with theoretical calculation (DFT) reveals that groups in cations determinaning factor kinetic ion...
Age-related gastrointestinal decline contributes to whole-organism frailty and mortality. Genistein is known have beneficial effects on age-related diseases, but its precise role in homeostasis of the aging gut remains be elucidated. Here, wild-type mice Zmpste24-/- progeroid were used investigate genistein lifespan mammals. A series longitudinal, clinically relevant measurements performed evaluate effect healthspan. It was found that dietary promoted a healthier longer life associated with...
Lead halide perovskites with good optoelectronic properties and high attenuation of high-energy radiation are great candidates for X-ray detectors. Large area, dense, thick films or wafers a prerequisite these applications. In this paper, one-step heat-assisted high-pressure press method is developed to directly prepare large (the largest has diameter 80 mm) thickness- shape-controlled phase-pure organic–inorganic hybrid CH3NH3PbI3 wafer densely packed microcrystals from raw powder...
Abstract High temperature stable inorganic CsPbX 3 (X: I, Br, or mixed halides) perovskites with their bandgap tailored by tuning the halide composition offer promising opportunities in design of ideal top cells for high‐efficiency tandem solar cells. Unfortunately, current perovskite (PSCs) are prepared vacuum, a moisture‐free glovebox other low‐humidity conditions due to poor moisture stability. Herein, new precursor system (HCOOCs, HPbI , and HPbBr ) is developed replace traditional...
The application of ionic liquids in perovskite has attracted wide-spread attention for its astounding performance improvement solar cells (PSCs). However, the detailed mechanisms behind remain mysterious. Herein, a series imidazolium-based (IILs) with different cations and anions is systematically investigated to elucidate passivation mechanism IILs on inorganic perovskites. It found that display following advantages: (1) They form bonds Cs+ Pb2+ surface at grain boundaries films, which...
Abstract Lead‐based (Pb) perovskite recently emerged as a promising photoelectric material for direct ionization radiation detection with outstanding performance. Unfortunately, its application is limited due to toxicity caused by high Pb content, serious ion migration, poor crystallite quality, unsatisfactory reproducibility, resistivity, and large fluctuation of electronic properties. Herein, better substitute lead‐free inch‐sized (34.3 mm × 34.3 13.1 mm) high‐quality halide (CH 3 NH ) Bi...
Dopamine (DA) level in the nucleus accumbens (NAc) is critical for reward and aversion encoding. DA released from ventral mesencephalon (VM) DAergic neurons increases excitability of VM-projecting D1-dopamine receptor-expressing medium spiny (D1-MSNs) NAc to enhance release augment rewards. However, how such a positive feedback loop regulated maintain homeostasis reward-aversion balance remains elusive. Here we report that pallidum (VP) projection D1-MSNs (D1NAc-VP) inhibited by rewarding...
A strategy for efficaciously regulating perovskite crystallinity is proposed by using a volatile solid glycolic acid (HOCH2COOH, GA) in an FA0.85MA0.15PbI3 (FA: HC(NH2)2; MA: CH3NH3) precursor solution that different from the common additive approach. Accompanied with first dimethyl sulfoxide sublimation process, subsequent of GA before 150 °C film can artfully regulate without any residual after annealing. The improved formation upon modification induced strong interaction between and Pb2+...
Abstract CsPbI 2 Br perovskite is known for its advantages over organic‐inorganic hybrid counterpart including better thermal stability and appropriate bandgap the front sub‐cell of tandem solar cell. However, lower‐than‐satisfactory efficiency, problematic phase sensitivity to moisture hinder further advancement. Here, three kinds glycine halides (Gly‐ X : = Cl, Br, I) are strategically deigned improve performance cells (PSCs). Systematic experimental calculated results prove that a 2D/3D...
Single-phase ZnCdO alloys with a band gap extending from the violet to yellow spectral range are fabricated by molecular beam epitaxy using extremely low growth temperatures in conjunction O-rich conditions. The Cd concentration can be systematically adjusted via Cd∕Zn pressure ratio. Despite as 150°C, layer-by-layer is accomplished allowing for preparation of ZnCdO∕ZnO quantum well structures. Both epilayers and wells exhibit strong band-gap-related emission at room temperature whole...
We report on a specific growth procedure combining low-temperature of ZnMgO and postgrowth annealing at intermediate temperatures. Despite the large lattice misfit induced by sapphire substrate, layer-by-layer is accomplished up to phase-separation limit found c-lattice constant 0.5136nm Mg mole fraction 0.40. The allows us grow quantum wells with atomically smooth interfaces in wide range structural designs exhibiting prominent emission features room temperature.
A PbI<sub>2</sub> phase is found to be inevitably formed at the interface in dual-source evaporated perovskite films that will block carrier transport.
All-inorganic CsPbI3 perovskite solar cells (PSCs) have been extensively studied due to their high thermal stability and unprecedented rise in power conversion efficiency (PCE). Recently, the champion PCE of PSCs has reached up 21%; however, it is still much lower than that organic-inorganic hybrid PSCs. Interface modification passivate surface defects minimize charge recombination trapping important further improve Herein, a new zwitterion ion deposited at interface between electron...
When the Lagrangian relaxation based methods are applied to solve power system unit commitment, identical solutions subproblems associated with units may cause dual solution be far away from optimal and serious oscillations. As a result, quality of feasible obtained very unsatisfactory. This issue has been long recognized as an inherent disadvantage methods. In this paper, homogeneous is identified analyzed through simple example. Based on analysis, successive subproblem solving method...
Production, purification, and characterization of a novel β-1,3-1,4-glucanase (lichenase) from thermophilic Rhizomucor miehei CAU432 were investigated. High-level extracellular production 6230 U/mL was obtained when oat flour (3%, w/v) used as carbon source at 50 °C. The crude enzyme purified to homogeneity with specific activity 28818 U/mg. molecular weight estimated be 35.4 kDa 33.7 by SDS-PAGE gel filtration, respectively. optimal pH temperature the 5.5 60 °C, K(m) values for barley...
Abstract All‐inorganic perovskite solar cells (PSCs) have been the research focus due to their high thermal stability and proper band gap for tandem cells. However, power conversion efficiency (PCE) is still lower than that of organic‐inorganic hybrid PSCs. Herein, a sacrificing dye (Rhodamine B isothiocyanate, RBITC) developed regulate growth film by in situ release ethylammonium cations, isothiocyanate anions benzoic acid molecules upon annealing illumination. The cations can efficiently...
SiGe quantum rings (QRs) were grown by partially capping on Ge dots (QDs) Si(001). Atomic force microscopy images show the shape transformation from QDs to QRs. Initial capping, with a Si layer thickness less than 2 nm, will result in decrease of height and increase base diameter QDs. Capped layer, change into The mechanism QRs is discussed. strain redistribute after thus energy relief, together high surface diffusion segregation at relative temperature 680 °C, play dominant role.
Elinvar effect is observed in non-magnetic Co doped TiNi strain glass alloys. The explained by the coupling of dynamic size and dependence elastic modulus. appearance highly correlated with nucleation size, so that only for high point defect concentration, can be observed. Due to generality modulus, expected many other materials, which points out a way find new materials.
Abstract Lead halide perovskite‐based X‐ray detectors show very promising sensitivity and low detection limit, which can be used for next‐generation, room‐temperature radiation detections. It is interesting to find that the diode‐structured detector shows high photocurrent gain under small reversed bias voltage, unusual should investigated understood better device design. In this regard, a lead with p–i–n structure fabricated studied. The structured abnormal excellent photoconductor...
This paper presents a study on the fine processing of flexible thin film conformal antennas for use in aerospace and microelectronics applications. Current methods these types have different degrees defects, but UV-nanosecond laser offers several advantages, such as high photon energy, non-contact processing, small heat-affected zone. In this study, we conducted technical analysis circuit structure radar through direct writing achieved controlled large-format antennas. We built system...