A5100722795- Luminescence Properties of Advanced Materials
- Perovskite Materials and Applications
- Inorganic Fluorides and Related Compounds
- 2D Materials and Applications
- Microwave Dielectric Ceramics Synthesis
- Solid-state spectroscopy and crystallography
- Ferroelectric and Piezoelectric Materials
- High-pressure geophysics and materials
- Ga2O3 and related materials
- Luminescence and Fluorescent Materials
- Advanced Photocatalysis Techniques
- Gas Sensing Nanomaterials and Sensors
- Quantum Dots Synthesis And Properties
- Inorganic Chemistry and Materials
- Organic Light-Emitting Diodes Research
- Chalcogenide Semiconductor Thin Films
- Advancements in Battery Materials
- Graphene research and applications
- Optical properties and cooling technologies in crystalline materials
- Boron and Carbon Nanomaterials Research
- Radiation Detection and Scintillator Technologies
- Copper-based nanomaterials and applications
- Photorefractive and Nonlinear Optics
- Solid State Laser Technologies
- Acoustic Wave Resonator Technologies
State Key Laboratory of Superhard Materials
2015-2024
Jilin University
2015-2024
Yunnan University
2013-2024
Xiamen University
2020-2024
State Ethnic Affairs Commission
2015-2023
Chongqing Medical University
2023
University of Electronic Science and Technology of China
2018-2022
China University of Petroleum, Beijing
2022
Jilin Medical University
2015-2021
Minzu University of China
2014-2020
A new red phosphor BaGeF<sub>6</sub>:Mn<sup>4+</sup>prepared by a hydrothermal route shows intense emission under blue light excitation, which may find application in warm white LED devices.
Compression of hydrogen-rich hydrides has been proposed as an alternative way to attain the atomic metallic hydrogen state or high-temperature superconductors. However, it remains a challenge get access these states by synthesizing novel polyhydrides with unusually high hydrogen-to-metal ratios. Here we synthesize series cerium (Ce) direct reaction Ce and H2 at pressures. We discover that polyhydride CeH9, formed above 100 GPa, presents three-dimensional network composed clathrate H29 cages....
A new red phosphor Cs<sub>2</sub>TiF<sub>6</sub>:Mn<sup>4+</sup>has been prepared by a facile cation exchange route, which can absorb the broad blue band and emit intense light efficiently, be potential candidate for application in indoor lighting WLEDs.
A comparative investigation of broadband near-infrared luminescence from two different occupation sites in Rb 2 LiAlF 6 :Cr 3+ with high efficiency and excellent thermal stability.
Red hexafluoride phosphors were synthesized by a simple co-precipitation method. WLEDs fabricated with as-prepared emit intense warm white-light under 20 mA current excitation. Therefore, they may find application in WLEDs.
A new Mn<sup>4+</sup>doped hexafluorozirconate complex, Cs<sub>2</sub>ZrF<sub>6</sub>:Mn<sup>4+</sup>, was prepared successfully through a cation exchange route. With introduction of this phosphor, the<italic>R</italic><sub>a</sub>and<italic>T</italic><sub>c</sub>values YAG type WLED can be significantly improved, indicating its potential application for warm white lighting.
We successfully prepared a red-emitting phosphor Rb2NbOF5 doped with Mn4+, and investigated its crystal structure, luminescent properties, applications in detail. Mn4+ ions exhibit an intense red emission high color purity upon broad excitation the blue region. The related crystal-field parameters of have been estimated according to spectra. More importantly, Rb2NbOF5:Mn4+ has thermal-quenching resistance stability. further fabricated warm white light-emitting diode using phosphor, emitting...
Batteries with fast charging capability are urgently needed to meet the rapidly increasing demand for energy storage devices.
Abstract Crystal phosphors have many unique advantages compared with powdery ones. Herein, room‐temperature‐grown millimeter‐sized single‐crystal of Cs 2 XF 6 :Mn 4+ (X = Ge, Si, and Ti) remarkably higher external quantum efficiency than the corresponding samples are reported. In addition, as ones, crystal exhibit much better stability toward water under different pH conditions. The red light‐emitting diodes (LEDs) based on crystals show significantly improved luminous those their powders....
Using tissue engineering, a complex of neural stem cells (NSCs) and collagen type I was transplanted for the therapy cerebral ischemic injury. NSCs from E14 d rats were dissociated cultured by neurosphere formation in serum-free medium presence basic fibroblast growth factor (bFGF), then seeded onto to measure cell adhesive ability. BrdU added culture label NSCs. Wistar (n=100) subjected 2-hour middle artery occlusion. After 24 hours reperfusion, assigned randomly five groups: NSCs-collagen...
Red phosphor Cs<sub>2</sub>GeF<sub>6</sub>:Mn<sup>4+</sup> synthesized by the cation exchange method exhibits an intense red emission with a high colour-purity. The warm WLED fabricated this emits white light under 20 mA current excitation.
A single-phased Mn(4+) doped fluorozirconate red phosphor, K3ZrF7:Mn(4+), has been successfully synthesized. Its structure, morphology, composition and optical properties were investigated by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, atomic absorption diffuse reflectance photoluminescence spectroscopy using luminescence decay curves. It was found that ions only coordinating with seven F(-) anions in a K3ZrF7 crystal field can possess intense emission...
New red-emitting phosphors A2HfF6:Mn4+ (A = Rb+, Cs+) with a single phase have been successfully synthesized via simple ion exchange method, and their structures luminescence properties were investigated. It was found that Mn4+ ions in Rb2HfF6 Cs2HfF6 who share wide band gaps can possess broad excitation bands the blue regions intense red emission internal quantum yields of 0.556 0.652, respectively. Meanwhile, these exhibit high chemical thermal stabilities. A series LED devices tunable...
The non-equivalent doping of Mn4+ in red-emitting fluoride phosphors effectively shortens the fluorescence lifetime. Herein, we successfully synthesized Rb2NaInF6:Mn4+ by an ion-exchange method. compensation mechanism local symmetry and charge balance phosphor were studied detail theoretical calculations based on density functional theory. (5.59 mol%) exhibits intense red emission with a short lifetime (1.45 ms). Meanwhile, it has excellent colour stability thermal quenching at elevated...
Abstract Strong light-matter interactions in two-dimensional transition metal dichalcogenides (TMDCs) with robust spin-valley degrees of freedom open up the prospect valleytronic devices. A thorough understanding on dynamics valley polarizations strong coupling regime is urgently required. Here, multiple polarized TMDCs-SPPs hybrid systems were constructed by combining monolayer WS 2 flakes to linear, circular, and spiral Ag gratings, resulting linear circular modulation coherent states,...