A5100381899- Luminescence Properties of Advanced Materials
- Glass properties and applications
- Nuclear Materials and Properties
- Fusion materials and technologies
- Solid State Laser Technologies
- Metallurgical Processes and Thermodynamics
- Nuclear materials and radiation effects
- Hydrogen embrittlement and corrosion behaviors in metals
- Radioactive element chemistry and processing
- Photorefractive and Nonlinear Optics
- Pigment Synthesis and Properties
- Lanthanide and Transition Metal Complexes
- ZnO doping and properties
- Boron and Carbon Nanomaterials Research
- High-Temperature Coating Behaviors
- Metal and Thin Film Mechanics
- Electrospun Nanofibers in Biomedical Applications
- Force Microscopy Techniques and Applications
- Electrochemical Analysis and Applications
- Advanced ceramic materials synthesis
- Electronic and Structural Properties of Oxides
- Phase Equilibria and Thermodynamics
- Semiconductor materials and interfaces
- Advanced materials and composites
- Ion-surface interactions and analysis
Chinese Academy of Sciences
2009-2024
Shanghai Institute of Applied Physics
2020-2024
Sun Yat-sen University
2022
Harbin Institute of Technology
2018
China National Nuclear Corporation
2014
Shanghai Institute of Optics and Fine Mechanics
2009-2010
A facile strategy based on the reaction of urea and boric acid is developed for synthesis toxicity-free BCNO nanocrystals containing carbon impurities which exhibit efficient multi-color fluorescence under both single-photon two-photon excitation.
BCNO phosphor derived from a low-temperature urea route is an efficient and environmental-friendly with emission covering the full visible near ultraviolet region. Systematic characterization of was carried out by means steady state time-resolved spectroscopy in order to unveil origins different luminescence centres. Two bands located at 335 410 nm together changeable band ranging 380 580 are identified related presence carbon defects as inferred electron paramagnetic resonance spectroscopy....
In the present paper, Tm 3+ /Yb ‐codoped lanthanum aluminum germanate glasses are prepared by simply melting and quenching method. Quantum cutting (QC) between Yb ions in these samples is realized; QC process, one blue photon at about 467 nm cut into two near‐infrared photons 1 μm. The maximum energy transfer efficiency corresponding can reach as high 59.9% 159.9%, respectively.
Bi-Tm-codoped, and Tm- Bi- singly doped germanate glasses were prepared, their luminescent properties investigated. Intense broadband near-IR emission with FWHM of 300 nm was observed in the Bi-Tm codoped glass. The intensity Tm(3+):(3)H(4)-(13)F(4) (3)F(4)-(13)H(5) transitions Bi-Tm-codoped glass highly increased reduced, respectively. fluorescence lifetime Tm(3+) at 1470 from 204 micros to 301 after codoping. These should be due efficient energy transfer Bi-related centers ions. highest...
SiC ceramic has been successfully joined to Zr4 alloy using TiZrNiCu filler within the temperature range 1173 K–1263 K and 15 min holding time. The morphology of SiC/Zr4 joints was investigated by SEM, phases in were characterized XRD TEM. results indicated that part substrate dissolved into molten during brazing process, contributed increasing Zr content formation Zr[Ti] solid solution joints. In addition, β-Ti phase discovered seam. This might be attributed existence stable elements, Cu...
Using low temperature synthesized BCNO phosphors as raw materials, monodispersed nanoparticles are obtained successfully after a two-step centrifugation. X-ray diffraction results indicate that these mainly hexagonal BN phase. These nanoparticle-embedded polymer nanofibers with an average diameter of 300 nm prepared by electrospinning. Photoluminescence spectra the emission can be readily tuned adjusting C concentration in phosphors. nontoxic intense tunable may find potential applications...
Ruthenium oxide (RuO2), due to its comparable binding energy with *H and cost-effectiveness against Pt, has emerged as a pivotal electrocatalyst for oxygen evolution reaction (OER). In the present study, RuO2 nanocrystals (NCs) nanowires (NWs) were obtained by molten salt process morphology, crystal structure, local bonding features examined using electron microscopy X-ray absorption spectroscopy. From electrochemical measurement, both NCs NWs exhibit favorable stability activity toward in...
Quantum cutting down-conversion (DC) with the emission of two near-infrared photons for each blue photon absorbed is realized in Yb <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> -Tb codoped borosilicate glasses. With excitation Tb ion by a 484-nm monochromatic light, from xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> F <sub xmlns:xlink="http://www.w3.org/1999/xlink">5/2</sub> rarr...
Abstract A new method is demonstrated for synthesizing thorium dioxide (ThO 2 ) nanoparticles (NPs) by thermal decomposition of an undiscovered thorium‐based metal‐organic framework (MOF). Upon heating at 520 °C, the MOF crystals, designated Th‐MTB, are converted completely to ThO NPs with average size 150 nm. The MOF‐derived easily sintered form ceramics which have good conductivity. crystalline grains grow continuously during sintering.The synthesis could potential applications in...
In addition to uranium, thorium is a vital nuclear element that has broad potential for future energy applications. Herein, we report the synthesis of cubic structured ThO2 nanocrystals (NCs) based on decomposition their nitrate salt in air and molten medium. Both processes yield pure NCs with average sizes <100 nm. The synthesized medium exhibit better crystallinity larger size ∼75.1 nm narrow distribution owing high-temperature liquid growth environment. ceramic sintered from salt-derived...
We reported on the formation of a microstructure (skew cross-shaped pattern) in bulk CaF(2) single crystal, which originates from local dislocations and microcracks around focal point infrared femtosecond laser beam. Relations between morphology power as well number pulses were discussed. Furthermore, it was observed that optically induced could be partially erased by additional irradiation its neighboring area with pulses. High-resolution transmission electron microscope (HRTEM)...