A5100362007- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- MXene and MAX Phase Materials
- Quantum Dots Synthesis And Properties
- 2D Materials and Applications
- Silicon and Solar Cell Technologies
- Advancements in Battery Materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Semiconductor materials and interfaces
- Advanced Memory and Neural Computing
- Semiconductor materials and devices
- Integrated Circuits and Semiconductor Failure Analysis
- Luminescence Properties of Advanced Materials
- Advanced Battery Materials and Technologies
- Optical properties and cooling technologies in crystalline materials
- Electrocatalysts for Energy Conversion
- Radiation Detection and Scintillator Technologies
- Conducting polymers and applications
- Silicon Carbide Semiconductor Technologies
- VLSI and Analog Circuit Testing
- Solid-state spectroscopy and crystallography
- Additive Manufacturing Materials and Processes
- Advanced Photocatalysis Techniques
- Thin-Film Transistor Technologies
Mongolian University of Science and Technology
2024-2025
North University of China
2024
South China University of Technology
2022-2024
China University of Geosciences
2022-2024
General Hospital of Shenyang Military Region
2024
Wenzhou University
2024
Northwest Institute of Nuclear Technology
2019-2023
Hefei Institutes of Physical Science
2023
Institute of Solid State Physics
2023
Chinese Academy of Sciences
2023
Efficient all-perovskite tandem cells Organic-inorganic perovskite films can boost the output of conventional silicon solar in geometries by utilizing more light at blue end spectrum. Tandem that use only have been less successful because lack a suitable material with low bandgap replace silicon. Tong et al. report mixed tin-lead organic-inorganic containing small fraction guanidinium thiocyanate has bandgap, long charge-carrier lifetime, and efficiencies around 25%. Science , this issue p. 475
Abstract Metal halide perovskite semiconductors possess outstanding characteristics for optoelectronic applications including but not limited to photovoltaics. Low-dimensional and nanostructured motifs impart added functionality which can be exploited further. Moreover, wider cation composition tunability tunable surface ligand properties of colloidal quantum dot (QD) perovskites now enable unprecedented device architectures differ from thin-film fabricated solvated molecular precursors....
CsPbI3 nanocrystals with narrow size distributions were prepared to study the size-dependent properties. The adopt perovskite (over nonperovskite orthorhombic) structure improved stability over thin-film materials. Among phases (cubic α, tetragonal β, and orthorhombic γ), samples are characterized by γ phase, rather than but may have a average tilting between adjacent octahedra. Size-dependent lattice constants systematically vary 3% across range, unit cell volume increasing linearly inverse...
Instability in mixed-halide perovskites (MHPs) is a key issue limiting perovskite solar cells and light-emitting diodes (LEDs). One form of instability arises during the processing MHP quantum dots using an antisolvent to precipitate purify forming surface traps that lead decreased luminescence, compromised colloidal stability, emission broadening. Here, introduction inorganic ligands antisolvents used dot purification reported order overcome this problem. MHPs are colloidally stable for...
Electrochemical supercapacitors are hybrids of a capacitor and battery that rely on materials capable storing charges via pseudocapacitive reactions in addition to conventional electrostatic double-layer charge storage. MXenes, relatively new class two-dimensional (2D) transition metal carbides nitrides, ideal candidates for due their high electronic conductivity, surface area, ability store mechanisms. Nitride MXenes such as Ti2NTx predicted have higher pseudocapacitance than carbide but...
A relatively new class of two-dimensional (2D) materials called MXenes have garnered tremendous interest in the field energy storage and conversion. Thus far nearly all reported experimentally been described as metals, with a lone report mixed-metal carbide phase exhibiting semiconducting character. Here, we optical, electrocatalytic, electrical properties 2D Ti4N3Tx MXene (Tx = basal plane surface terminating groups) show that this material exhbits both metallic behaviors. We provide...
Hybrid methylammonium lead tribromide (MAPbBr3) perovskite has attracted great attention in ionization radiation detection. However, the charge collection remains a challenge. Here, fast response and high-sensitivity X-ray detection based on MAPbBr3 single crystals with surface barrier Schottky diode been achieved at room temperature. The can overcome large leakage current high electrical field, enabling us to reduce noise increase efficiency. This device demonstrated 3 times improvement...
Surface modification of silicon nanoparticles via molecular layer deposition (MLD) has been recently proved to be an effective way for dramatically enhancing the cyclic performance in lithium ion batteries. However, fundamental mechanism how this thin coating functions is not known, which complicated by inevitable presence native oxide several nanometers on nanoparticle. Using situ TEM, we probed detail structural and chemical evolution both uncoated coated particles upon...
Unusual strain hardening response and ductility of NiCoCr equiatomic alloy were investigated through microstructural analysis [111], [110] [123] single crystals deformed under tension. Nano-twinning prevailed at, as early as, 4% along the orientation, providing a steady work hardening, thereby significant ductility. While slip dominated in orientation at stages deformation, multiple nanotwinning was prominent [111] orientation. Significant dislocation storage capability resistance to necking...
Silicon (Si) has been well recognized as a promising candidate to replace graphite because of its earth abundance and high-capacity storage, but large volume changes upon lithiation/delithiation the consequential material fracturing, loss electrical contact, over-consumption electrolyte prevent full application. As countermeasure for rapid capacity decay, composite electrode Si adopted by accommodating nanoparticles in matrix. Such an approach, which involves two materials that interact...
The advancement of precision medicine in modern biomedicine has been significantly propelled by the emergence micro/nanorobots. combination micro/nanorobots and offers unique advantages holds attractive potential for applications. It effectively addresses challenges encountered traditional robots areas such as driving, sensing, intelligence other aspects, especially application cancer cardiovascular diseases, which is a hot field interdisciplinary research recent years. This review...
Despite the recent growth in interest for metal additive manufacturing (AM) biomedical and aerospace industries, variability performance, composition, microstructure of AM parts remains a major impediment to its widespread adoption. The underlying physical mechanisms, which cause variability, as well scale nature are not understood, current methods ineffective at capturing these details. Here, Nickel-Titanium alloy is used sensory material order quantitatively, rather rapidly, observe...
We directly map the catalytic activity on metallic (1T) basal sites and semiconducting (2H) edge within 2D MoS<sub>2</sub> nanosheets.
Scintillators that convert ionization radiation photons to UV-visible have attracted extraordinary attention. Traditional scintillators are associated with a vacuum photomultiplier tube faces strict constraints of fragility, magnetic fields, and operated voltage, or coupled silicon (SiPM) optical silicone grease. Here, we report high-performance detector an indirect photon-to-photon conversion detection model based on perovskite single crystals (SCs), where SCs been directly integrated into...
State-of-the-art thermal neutron scintillation detectors rely on rare isotopes for capture, lack stability and scalability of solid-state devices, poorly discriminate between the gamma rays. The boron nitride (BN)-CsPbBr3 perovskite nanocomposite aerogel scintillator enables discriminative detection neutrons, features largest known size (9 cm across), lowest density (0.17 g cm-3 ) among existing materials, high BN (50%) (1%) contents, optical transparency (85%), excellent radiation...
This study highlights the facet structure control of regular NixCo3–xO4 nanoplates and interfacial modulation through elemental doping morphologically fitted assembly Ti3C2Tx nanosheets for high performances in OER/HER overall water splitting. Over resulting Ni0.09Co2.91O4/Ti3C2Tx-HT a solution 1 M KOH, OER HER overpotentials 262 210 mV, respectively, are achievable at current density 10 mA cm–2. In case splitting by using as anode cathode catalysts, only potential 1.66 V is needed to obtain...
Abstract Lead halide quantum dots (QDs) have unique optical properties such as a tunable wavelength, narrow band, and high efficiency, been used in optoelectronics light-emitting diode device, photodetector. Recently, solution-processed perovskite has also attracted great attention for sensitivity x-ray detector. Here, we investigated the scintillation performances of Pb QDs solution. Both CH 3 NH PbBr CsPbBr liquid scintillator exhibits linear relationship with irradiation dose rate wide...