A5090077515- Luminescence Properties of Advanced Materials
- Radiation Detection and Scintillator Technologies
- Glass properties and applications
- Perovskite Materials and Applications
- Solid State Laser Technologies
- Ga2O3 and related materials
- Photorefractive and Nonlinear Optics
- ZnO doping and properties
- Microwave Dielectric Ceramics Synthesis
- Solid-state spectroscopy and crystallography
- Advanced Photocatalysis Techniques
- Nuclear materials and radiation effects
- Gas Sensing Nanomaterials and Sensors
- Quantum Dots Synthesis And Properties
- Silicon Nanostructures and Photoluminescence
- Optical properties and cooling technologies in crystalline materials
- Atomic and Subatomic Physics Research
- Optical and Acousto-Optic Technologies
- Crystal Structures and Properties
- Nuclear Physics and Applications
- Magnetic and transport properties of perovskites and related materials
- Electronic and Structural Properties of Oxides
- Chalcogenide Semiconductor Thin Films
- Acoustic Wave Resonator Technologies
- Nanowire Synthesis and Applications
Polish Academy of Sciences
2015-2025
Institute of Physics
2015-2025
Berdyansk State Pedagogical University
2023-2025
Czech Academy of Sciences, Institute of Physics
2022-2025
Lviv Polytechnic National University
2017-2022
Lviv University
2017-2021
Electron (Ukraine)
2017
Bi-doped compounds recently became the subject of an extensive research due to their possible applications as scintillator and phosphor materials. The oxides co-doped with Bi3+ trivalent rare-earth ions were proposed prospective phosphors for white light-emitting diodes quantum cutting down-converting materials applicable enhancement silicon solar cells. Luminescence characteristics different Bi3+-doped found be strongly ascribed electronic transitions from excited levels a ion its ground...
A 0.25% iron (Fe3+)-doped LiGaO2 phosphor was synthesized by a high-temperature solid-state reaction method. The characterized utilizing X-ray diffraction (XRD), scanning electron microscopy (SEM), high-pressure photoluminescence, and photoluminescence decay measurement techniques using diamond anvil cells (DACs). powder analysis shows that the is β polymorph of with an orthorhombic crystallographic structure at room temperature. SEM result also confirms presence well-dispersed...
Noninvasive optical imaging techniques, including X-ray and near-infrared (NIR), hold significant value for scientific research industrial applications. However, there is still a lack of convenient platform that integrates NIR in both bright- dark-field Here, rare-earth ion-doped LaNbO4:Pr,Er photochromic luminescent material developed, integrating X-ray-induced coloration, NIR-induced bleaching, photoluminescence, luminescence modulation. Under alternating light irradiation, the...
Luminescence methods for non-contact temperature monitoring have evolved through improvements of hardware and sensor materials. Future advances in this field rely on the development multimodal sensing capabilities probes extend range across which they operate. The family Cr-doped oxides appears particularly promising we review their luminescence characteristics light application measurements over 5–300 K range. Multimodal utilizes intensity ratio emission lines, wavelength shift,...
Abstract Zinc gallate (ZnGa 2 O 4 ) spinel ceramics doped with Mn 2+ ions was prepared by a solid-state reaction at 1200 °C in air. Manganese concentration equal to 0.05 mol.% of MnO respect ZnO. Ceramics produced this way show an efficient green emission about 505 nm under UV or X-ray excitations, which is caused ions. This observed also as relatively long afterglow (visible the naked eye dark for one hour) after switching-off excitation. Time profiles beginning glow and have been studied...
Detailed investigations of the spectroscopic properties Cr3+ ions in β-Ga2O3:0.05% single crystals grown by floating zone technique have been performed temperature range 4.5–550 K. The luminescence at low temperatures is due to narrow R-lines (2E → 4A2 transitions) and their vibronic sidebands, whereas broad intense band (4T2 transition) dominates above 200 sidebands with amplitude less than 5% R1-line a 4.5 K cover region 700–735 nm. dependences intensity decay time indicate same mechanism...
This study introduces an innovative method for synthesizing Cadmium Oxide /Cadmium Sulfide/Zinc heterostructures (CdO/CdS/ZnO), emphasizing their potential application in solar energy. Utilizing a combination of electrochemical deposition and oxygen annealing, the research provides thorough analysis through scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectroscopy, diffraction (XRD), Raman photoluminescence (PL) spectroscopy. The findings reveal complex surface...
We demonstrate a potential optical thermometric material, Pr3+-doped triple-layered perovskite Na2La2Ti3O10 microcrystals, which promises remarkable performance in temperature sensing over wide range (125–533 K), with maximum relative sensitivity of 2.43% K–1 at 423 K. Both and high-pressure dependent photoluminescence measurements were performed for this compound. It turns out that the Pr3+–Ti4+ intervalence charge transfer state is primary cause very efficient characteristics 296–533 K...
The (NPbPEr) glasses of the composition (20-x) Na2SO4–20PbO–60P2O5-xEr2O3 (x = 0.1, 0.3, 0.5, 0.7, 1.0 mol %) are synthesized by melt quenching process. basic characterization studies like XRD and EDS have confirmed amorphous nature contents samples. spectroscopic viz., optical absorption, photoluminescence (PL) decay profiles were carried out. PL spectra exhibited an intense sharp green emission peak at 544 nm due to 4S3/2 → 4I15/2 transition Er3+ ions both in down-conversion (DC, λexc 377...
The photoluminescence, excitation, and absorption spectra as well the electrical conductivity of β-Ga2O3:Cr β-Ga2O3:Cr,Mg single crystals were studied. as-grown had a green color, at about 10−2–10−3 Ω−1 cm−1, low yield Cr3+ impurity luminescence. Annealing in oxygen atmosphere led to strong increase red luminescence yield, resistivity, changes excitation spectra. Similarly, increases resistivity observed after codoping with magnesium (Mg2+). registered conductivity, are considered be due...
In this work, luminescence properties of Europium doped ZnO and ZnMgO thin films grown on a-oriented (11–20) sapphire substrates by oxygen plasma assisted Molecular Beam Epitaxy method are studied. The concentrations distributions Eu atoms in the respective hosts were analysed using Secondary Ion Mass Spectrometry, which confirmed successful doping around level ∼1%. Optical samples investigated room temperature photoluminescence (PL) Photoluminescence excitation (PLE) measurements. PL data...
Luminescence lifetime thermometry for remote temperature monitoring of cryogenic objects requires materials that exhibit a suitably large change the luminescence kinetics at low temperatures. Results systematic studies temperature-induced changes in tungstates and molybdates with general formula ABO4 (A = Ca, Sr, Zn, Cd; B W, Mo) over 4.5–300 K range are summarized. It is shown through analysing emission excitation spectra, as well decay kinetics, these due to self-trapped excitons, process...
This paper presents results of complimentary experimental (by electron microscopy, X-ray diffraction, diffuse reflectance, photoluminescence (PL) and FTIR spectroscopy) computational molecular dynamics DFT-based electronic structure methods) studies oxide glasses xP2O5-yMoO3-zBi2O3-(1-x-y-z)K2O system glass ceramics based on them (crystal @glass), where the KBi(MoO4)2 complex is crystal component (KBi(MoO4)2 @glass). The behavior observed PL characteristics analyzed in synergy with...
Abstract This study provides a comprehensive analysis of the electronic structure, reflectivity, and luminescent spectra organic-inorganic, metal-halide MAPbCl 3 perovskite, which has considerable potential for various optoelectronic applications. Using density functional theory (DFT) calculations, we investigated structure interpreted key features its reflectivity across wide energy range from to 10 eV. The reveal prominent excitonic at 3.22 eV near absorption edge additional optical...
This paper is devoted to the investigation of plasmonic effect metal nanoparticles (NPs) formed on surface YAG: Bi, Ce, Yb phosphors in a temperature range between 4 and 300 K. Combination thin conversion layer with silver nanostructures leads increase sensitizer absorption emission efficiency. Enhancement Bi3+ luminescence YAG epitaxial films Ag NPs was observed upon cooling samples below 200 High enhancement factors were associated closely matching maximum plasmon extinction bands. The...