A5040431691- Perovskite Materials and Applications
- Solid-state spectroscopy and crystallography
- Luminescence Properties of Advanced Materials
- Optical properties and cooling technologies in crystalline materials
- Glass properties and applications
- Photorefractive and Nonlinear Optics
- Photonic Crystals and Applications
- Optical and Acousto-Optic Technologies
- Nonlinear Optical Materials Studies
ITMO University
2021-2024
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%,...
Abstract Inorganic glasses doped with luminescent silver clusters are promising materials for photonic applications as white light generation, optical data storage, and spectral conversion. This work reports the photostability study of dispersed in silica‐based glass under continuous ultraviolet irradiation. The photobleaching process model is proposed quantum yield derived from experimental data. mechanism photoionization clusters. Degradation cluster luminescence reversible restores after...
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%.
The results of the synthesis and study spectral structural properties borate glasses with (Cs,Rb)PbBr<sub>3</sub> perovskite nanocrystals are presented. exhibit intense narrow-band luminescence in 510–520 nm region. With an increase rubidium content, maximum crystals shifts to short-wavelength region, while quantum yield first increases 91% then decreases 52%. In absence, several perovskite-like phases lead-cesium bromides nucleated glass matrix: CsPb<sub>2</sub>Br<sub>5</sub>,...
Abstract In this work bromide photo-thermo-refractive glasses with different Ytterbium concentration were explored. It is shown that UV irradiation and subsequent heat treatment of samples Yb 2 mol.% causes significant red-shift absorption line from 410 nm temperature lower than T g to 517 +60 °C. For small (0,1 mol. %) maximum in plasmon resonance band as 485 it the same for temperatures +20 °C