A5006449709- Silicon Nanostructures and Photoluminescence
- Anodic Oxide Films and Nanostructures
- Luminescence Properties of Advanced Materials
- Photonic Crystals and Applications
- Semiconductor materials and devices
- Perovskite Materials and Applications
- Photonic and Optical Devices
- Ferroelectric and Piezoelectric Materials
- Ga2O3 and related materials
- Electronic and Structural Properties of Oxides
- Photorefractive and Nonlinear Optics
- Mesoporous Materials and Catalysis
- TiO2 Photocatalysis and Solar Cells
- Optical properties and cooling technologies in crystalline materials
- Advanced Photocatalysis Techniques
- Optical and Acousto-Optic Technologies
- Gas Sensing Nanomaterials and Sensors
- Glass properties and applications
- Quantum Dots Synthesis And Properties
- Microwave Dielectric Ceramics Synthesis
- Organic Light-Emitting Diodes Research
- Transition Metal Oxide Nanomaterials
- Nanowire Synthesis and Applications
- Nuclear materials and radiation effects
- Solid-state spectroscopy and crystallography
Belarusian State University of Informatics and Radioelectronics
2016-2025
Moscow Engineering Physics Institute
2018-2021
University of Information Science
2007-2010
Institute of General and Inorganic Chemistry of National Academy of Sciences of Belarus
2009
Belarusian State University
2004-2008
University of Manchester
2000
Institute of Applied Physics
1999
Institut für Oberflächen- und Schichtanalytik GmbH
1995
University of Kaiserslautern
1995
Minsk Radioengineering College
1993
We report on the photonic band gap phenomenon in visible range a three-dimensional dielectric lattice formed by close-packed spherical silica clusters. The spectral position and width of optical stop depend direction light propagation with respect to crystal axes opal, relative cluster-to-cavity refraction index n. Manifestations pseudogap have been established for both transmission emission spectra. peak wavelength shows linear dependence Transmission characteristics successfully simulated...
Among the leading energy materials, metal tri-halide perovskite quantum dots (PQDs) with outstanding optoelectronic properties are at forefront of current research.
Although cesium halide lead (CsPbX3, X = Cl, Br, I) perovskite quantum dots (QDs) have excellent photovoltaic properties, their unstable characteristics are major limitations to application. Previous research has demonstrated that the core-shell structure can significantly improve stability of CsPbX3 QDs and form heterojunctions at interfaces, enabling multifunctionalization materials. In this article, we propose a convenient method construct core-shell-structured materials, in which...
Abstract Addressing the challenge of lighting stability in perovskite white light emitting diodes (WLEDs) is crucial for their commercial viability. CsPbX 3 (X = Cl, Br, I, or mixed) nanocrystals (NCs) are promising next‐generation due to superior optical and electronic properties. However, inherent soft material structure NCs particularly susceptible elevated temperatures associated with prolonged WLED operation. Additionally, these face challenges high humidity environments, leading...
Lead halide perovskite quantum dots (PQDs) are reported as a promising branch of perovskites, which have recently emerged field in luminescent materials research. However, before the practical applications PQDs can be realized, problem poor stability has not yet been solved. Herein, we propose trioctylphosphine (TOP)-assisted pre-protection low-temperature solvothermal synthesis highly stable CsPbBr3/TiO2 nanocomposites. Due to protection branched ligands and lower temperature shell...
Long lifetime multicolor phosphorescence materials possess excellent optical properties and have important application prospects in the fields of advanced anti-counterfeiting information encryption. However, realizing long color-tunable room...
Erbium photoluminescence at room temperature and 77 K has been observed from porous silicon doped with erbium a spin-on silica gel film. incorporation into dioxide the surface of rapid thermal processing temperatures higher than 1223 were found to be necessary prerequisite for erbium-related luminescence in silicon. No diffusion monocrystalline films was observed. The depth-dependent concentration bulk determined by secondary-neutral- secondary-ion-mass spectrometry depth profiling....
Preparation of CsPbBr 3 with different dimensions (0D, 1D, 2D, 3D) and their optical stability under thermal environment.
Very recently, two-dimensional (2D) perovskite nanosheets (PNSs), taking the advantages of as well 2D structure properties, have received an enormous level interest throughout scientific community. In spite this incredible success in nanocrystals (NCs), self-assembly many nanostructures metal halide perovskites has not yet been realized, and producing highly efficient red-emitting PNSs remains challenging. Letter, we show that by using CsPbBrI2 nanoparticles (NPs) a building block, can...
Room temperature phosphorescent (RTP) carbon dot (CD) materials have been widely used in various fields, but it is difficult to achieve a long lifetime, high stability and easy synthesis. In particular, realizing the phosphorescence emission of CDs using metal oxide (MO) matrix challenge. Here, solid gels are synthesized via situ hydrolysis, then RTP based on SiO2 (CDs@SiO2) hybridized with MO (CDs@SiO2-MO) by high-temperature calcination. Among synthesized, Al2O3 (CDs@SiO2-Al2O3) lifetime...
Similar to spontaneous emission of photons and inelastic (Raman) scattering, elastic (Rayleigh) scattering light is controlled by spectral spatial distribution photon density states, DOS (density electromagnetic modes). However, date Rayleigh in nanoporous media has not become the subject discussion context effects. In this paper, we consider porous materials spectral, spatial, angular redistribution with pores whose size spacing are order wavelength. The effect results predictable...
Terbium-doped yttrium–aluminum oxide films were synthesized by spin-on deposition on porous anodic alumina grown a silicon wafer and annealed from 400 to . An influence of the annealing temperature terbium photoluminescence (PL) was studied using two-dimensional PL excitation time-resolved spectroscopy. Further, comparison thermal quenching data for most intensive luminescence band ions performed 10–300 K. From resultant data, mechanisms Tb its dependence conditions are proposed discussed.
The stability of Cs 2 AgIn 0.93 Bi 0.07 Cl 6 NCs under high humidity environments was enhanced by surface capping treatment (OA ligand and PVDF), where /PVDF CFs exhibited excellent water stability.
We report strongly enhanced Tb photoluminescence (PL) from a doped titania xerogel deposited on mesoporous anodic alumina. Transmission electron microscopy has confirmed the presence of inside pores alumina films up to several microns thickness. The optical bands attributed D35→Fi7 (i=3,4,5), D45→Fj7 (j=3,4,5,6) transitions Tb3+, with predominant band at 2.28 eV, are investigated between 6 and 300 K. At all temperatures, PL increases become narrower an increase in concentration xerogel,...
Lead-free double perovskites (DP) have the potential to become a rising star in next generation of lighting markets by addressing toxicity and instability issues associated with traditional lead-based perovskites. However, high concentrations hydrochloric acid (HCl) were often employed as solvent preparation most DPs, accompanied slow crystallization at temperatures, which not only raised risk cost process, but also had threat environment. Here, an situ fabrication strategy was proposed...
In this work, we have investigated the photocurrent and spectral sensitivity of silicon/SrTiO3:xNb/perovskite structures. The sol–gel method carried out deposition undoped SrTiO3 layers as well niobium-doped (SrTiO3:Nb) at atomic concentrations 3 6% Nb. perovskite layer, CH3NH3PbI3−xClx, has been deposited by vacuum co-evaporation technique. characterized scanning electron microscopy X-ray diffraction measurements. volt–ampere characteristics fabricated samples measured under illumination...
Abstract Pb‐free double‐perovskite (DP) scintillators are highly promising candidates for X‐ray imaging because of their superior optoelectronic properties, low toxicity, and high stability. However, practical applications require DP crystals to be ground mixed with polymers produce scintillator films. Grinding can compromise film uniformity optical thereby affecting resolution. In this study, an in situ fabrication strategy is proposed facilitate the crystalline growth Cs 2 AgIn x Bi 1‐x Cl...