A5018522666- Luminescence Properties of Advanced Materials
- Perovskite Materials and Applications
- Radiation Detection and Scintillator Technologies
- Advanced Photocatalysis Techniques
- Luminescence and Fluorescent Materials
- Solid State Laser Technologies
- Glass properties and applications
- Ferroelectric and Piezoelectric Materials
- Photorefractive and Nonlinear Optics
- Adsorption and biosorption for pollutant removal
- Microwave Dielectric Ceramics Synthesis
- Magnetic and transport properties of perovskites and related materials
- Optical and Acousto-Optic Technologies
- Gas Sensing Nanomaterials and Sensors
- Solid-state spectroscopy and crystallography
- Multiferroics and related materials
- Ammonia Synthesis and Nitrogen Reduction
- Electronic and Structural Properties of Oxides
- Acoustic Wave Resonator Technologies
- Zeolite Catalysis and Synthesis
- Ionic liquids properties and applications
- Chemical Synthesis and Characterization
- Chromium effects and bioremediation
- Crystallization and Solubility Studies
- Nuclear materials and radiation effects
Kunming University of Science and Technology
2014-2024
Central South University of Forestry and Technology
2019-2024
Central South University
2019-2024
Guangzhou Institute of Energy Conversion
2024
Chinese Academy of Sciences
2024
Collaborative Group (United States)
2023
Kunming University
2018-2021
Changsha University
2020
Beijing Forestry University
2014-2019
South China University of Technology
2016-2018
The last decades have witnessed the discovery of tens thousands rare earth (RE) (e.g., Eu2+) and non-RE Mn2+) doped photonic materials for near-ultraviolet (NUV) blue converted white light-emitting diodes (wLEDs), but future development wLEDs technology is limited greatly by intrinsic problems these traditional dopants, such as insurmountable visible light reabsorption, weak absorption strength in NUV or region, so on. Here we report a feasible strategy guided density functional theory (DFT)...
Bi3+-activated photonic materials have received increased interest recently because they can be excited effectively with near-ultraviolet (NUV) but not visible light, thereby avoiding the reabsorption among phosphors, which cannot solved intrinsically by traditional rare earth (e.g., Eu2+, Ce3+) phosphors. Such unique property suggests their potential application in NUV chip-based WLEDs. However, few Bi3+ phosphors exhibit strong excitation peak NUV, though tail of some extend to NUV....
Bi 3+ ions occupy Ba site to form one luminescent center, which is consistent with the trigonal structure of BSAG. This phosphor has a high quantum efficiency 95.3% and can be used in WLEDs.
A series of color-tunable Ce3+ single-doped and Ce3+, Mn2+ codoped Ca2.5Sr0.5Al2O6 phosphors were synthesized by a high-temperature solid-state reaction. The crystal structure, luminescent properties, energy transfer studied. For Ca2.5Sr0.5Al2O6:Ce3+ obtained with Al(OH)3 as the raw material, three emission profiles observed. peak photoluminescence (PL) spectra excited at ∼360 nm shifts from 470 to 420 nm, while that PL 305 stays unchanged increase content. Furthermore, is situated 500 under...
Recently, rare earth (RE) ion doped single-phased phosphors, which can emit tunable colors upon single wavelength excitation, have received a great deal of attention, but most them involve multiple dopants as luminescence centers.
All-inorganic metal halide perovskites of the formulation ABX<sub>3</sub> (where A is Cs<sup>+</sup>, B commonly Pb<sup>2+</sup>, and X a halide, = Cl, Br, I) have been studied intensively for their unique properties.
Importance Recombinant human prourokinase (rhPro-UK) is a thrombolytic agent that has shown promising findings in phase 2 clinical trial patients with acute ischemic stroke (AIS). Objective To evaluate the efficacy and safety of rhPro-UK thrombolysis within 4.5 hours symptom onset AIS. Design, Setting, Participants This randomized, alteplase-controlled, open-label, 3 was conducted from May 2018 to 2020 at 35 medical centers China. A total 684 were screened 674 enrolled. Included aged 18 80...
Abstract Mimicking the natural bone extracellular matrix containing intrinsic topography and electrical signals is an effective way to modulate regeneration. However, simultaneously coupling of mechanobiology cues implant regeneration remains ignored. Here, authors report in situ designation titanium dioxide (TiO 2 ) nanocone/bismuth oxide (Bi O 3 nanodot heterojunctions on surface electro‐biomechanically trigger osseointegration at bone/implant interface. TiO nanocone/Bi exhibit built‐in...
Here, a cheap and fast way to measure the CO2 absorption rate capacity through thermogravimetric analysis (TGA) is proposed. The of in 11 ILs varying anion, cation, alkyl chain length, C2 methylation was then investigated. Three parameters comprehensively characterizing kinetics, including (x), initial (r10), degree difficulty reach phase equilibrium (t0.9), were proposed as standards evaluate potential for capture. Results show that correlation between complicated. However, with higher...
Polyphenol extracts from the burs of Castanea mollissima Blume (CMPE) exhibited potential antioxidant and hypoglycemic activities. The α-glucosidase inhibitory activities CMPE were assessed as a means elucidating mechanism behind its In vitro studies showed that significantly inhibited both yeast α-glucosidase, through noncompetitive mode with an IC50 0.33 μg/mL, rat intestinal α-glucosidase. vivo revealed oral administration at doses 600 mg/kg reduced postprandial blood glucose levels by...
Many strategies, including double substitution, addition of charge compensation, cation-size-mismatch and neighboring-cation have contributed to tuning photoluminescence phosphors for white light-emitting diodes. These strategies generally involve modification a certain special site where the activator occupies; strategy based on multiple cation sites is very rare desirable. Here we report that isovalent (Sr2+) aliovalent (Gd3+) substitutions Ca2+ tune from one band bands in whitlockite...
All-inorganic CsPbX<sub>3</sub> (X = Cl, Br, and I) perovskite quantum dots have great potential in the field of white light emission owing to their excellent optical properties.
A new strategy for enhancing upconversion emission <italic>via</italic> CD modification to improve photocarrier separation in bismuth oxychloride upconverting nanosheets.
A single‐phase multicolor emitting phosphor, Ca 3 Al 2 O 6 :Ce 3+ ,Li + , was prepared by a solid‐state reaction. When the Ce concentration is lower than 0.030 (molar ratio in ), yellow and greenish blue emissions can be observed under excitation near UV light, respectively. The yellow‐emitting phosphor possesses an internal quantum efficiency of 89%. Additional purplish emission turns up when concentrations are higher 0.040. Tunable bands originated from ions on different sites . Although...
The local symmetry breaking and presence of two independent active sites in Cs 2 LiInCl 6 :Yb 3+ ,Er double perovskites are beneficial for the luminescence enhancement, thus guiding designing highly-efficient visible NIR-II emitters.
It is unquestionably true that site occupation and energy transfer play important roles in the luminescent properties of optical materials from both practical applications theoretical research. In this paper, multisite-occupancy-driven multiple transfers were used as a straightforward strategy to achieve single-composition white-light emission Ce3+-, Tb3+-, Mn2+-doped Ba1.2Ca0.8SiO4 (BCS) phosphors. The T-phase orthosilicate BCS samples synthesized by traditional solid-state reactions. phase...