A5013095289- Glass properties and applications
- Luminescence Properties of Advanced Materials
- Perovskite Materials and Applications
- Optical properties and cooling technologies in crystalline materials
- Photorefractive and Nonlinear Optics
- Solid-state spectroscopy and crystallography
- Phase-change materials and chalcogenides
- Optical and Acousto-Optic Technologies
- Nuclear materials and radiation effects
- Lanthanide and Transition Metal Complexes
- Pigment Synthesis and Properties
- Magneto-Optical Properties and Applications
- Solid State Laser Technologies
- Nanocluster Synthesis and Applications
- Quantum Dots Synthesis And Properties
- Laser-induced spectroscopy and plasma
- Laser-Ablation Synthesis of Nanoparticles
- Material Science and Thermodynamics
- Mineralogy and Gemology Studies
- Chalcogenide Semiconductor Thin Films
- Metal Alloys Wear and Properties
- Chemical Thermodynamics and Molecular Structure
- Cultural Heritage Materials Analysis
- Nonlinear Optical Materials Studies
- Surface Treatment and Coatings
ITMO University
2017-2024
University of Tyumen
2016
For the first time, synthesis, luminescent and structural properties of stable perovskite-type (Cs1−xRbx)4PbBr6 (R = Cs, Rb) nanocrystals are shown. In absence rubidium, Cs4PbBr6 CsPbBr3 perovskite crystals precipitate in ZnO–Na2O–B2O3–GeO2 glass matrix. With ascending rubidium content, precipitation (Cs,Rb)4PbBr6 is replaced by Rb4PbBr6 nucleation. Nucleated exhibit an intense green luminescence. increase luminescence maximum shifts to blue region, quantum yield increases from 28 51%,...
The bright luminescence of silver clusters in glass have potential applications solid-state lighting, optical memory, and spectral converters. In this work, luminescent were formed the bulk photo-thermo-refractive (15Na2O-5ZnO-2.9Al2O3-70.3SiO2-6.5F, mol.%) doped with different Ag2O concentrations from 0.01 to 0.05 mol.%. spontaneous formation plasmonic nanoparticles during synthesis was observed at mol.% composition, limiting concentration range for cluster formation. characterized by...
A series of germanate glasses with manganese and alkaline ions (Li, Na, K, Rb, Cs) are successfully synthesized. Only 9 out 21 studied compositions crystallize into glass-ceramics LiNaGe 4 O Li 2 Ge 7 15 nanocrystals. The possess intense emission near 660-670 nm 37% QY two-exponential decay lifetime equal to 1.29 msec. fabricated materials can be used as a deep-red radiation light source for plant growth cultivation.
This work is devoted to the study of phase transitions in CsPbBr<sub>3</sub> perovskite nanocrystals nucleated borogermanate glass. Perovskite are obtained by bulk crystallization a glass matrix. A series samples with different sizes investigated. Upon heating, temperature dependence 1S exciton intensity for entire shows presence three transitions: range 130-150, 440-450, and 510-515°C. The first transition refers from tetragonal cubic structure. last associated melting crystalline...
Abstract Chromium-doped alkali alumina borate glass was synthesized. The DSC studies exhibited transition temperature to be 425°C and crystallization locate in the 600 – 700°C range. After isothermal treatment of samples at temperatures from 540 chromium-doped glass-ceramics obtained. two bands absorption spectra shifted towards small wavelength region after heat with changing colour. XRD revealed LiAl 7 B 4 O 17 : Cr 3+ nanocrystals nucleation mean size 12 25 nm. photoluminescence possessed...
Mixed-alkali-alumina-borate glasses doped with different Cr<sub>2</sub>O<sub>3</sub> content are prepared by conventional melt-quenching technique. Luminescent glass-ceramics is derived volume crystallization of the precursor glass via two-stage heat treatment. The structural, spectral, and luminescent properties determined X-ray diffraction, optical absorption, photoluminescent spectroscopy. XRD studies reveal LiAl<sub>7</sub>B<sub>4</sub>O<sub>17</sub>: Cr<sup>3+</sup> nanocrystals...
The investigation results of spectral properties CsPbI3 perovskite nanocrystals in borogermanate glass are presented. luminescence band shifts from 670 to 710 nm with crystal size increase 6.3 17 nm. maximum quantum yield obtained is 34%.
This work is devoted to investigation of the temperature influence on spectral and luminescent properties borate glass ceramics obtained by high-temperature heat treatment initial containing chromium oxide. The luminescence absorption spectra are for samples with different concentrations antimony oxide, which plays role a reducing agent, during heating subsequent cooling. dependence intensity established. possibility using materials under study as sensors considered.