A5002440289- Luminescence Properties of Advanced Materials
- Radiation Detection and Scintillator Technologies
- Solid-state spectroscopy and crystallography
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Optical and Acousto-Optic Technologies
- Perovskite Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Nuclear materials and radiation effects
- Atomic and Subatomic Physics Research
- Crystal Structures and Properties
- Terahertz technology and applications
- Chemical Synthesis and Characterization
- Zeolite Catalysis and Synthesis
- Dark Matter and Cosmic Phenomena
- Ga2O3 and related materials
- Medical Imaging Techniques and Applications
- Material Science and Thermodynamics
- Inorganic Chemistry and Materials
- Boron and Carbon Nanomaterials Research
- Acoustic Wave Resonator Technologies
- GaN-based semiconductor devices and materials
- bioluminescence and chemiluminescence research
- Microwave Dielectric Ceramics Synthesis
Lomonosov Moscow State University
2012-2024
University of Tartu
2021-2024
Moscow State University
2020
Lviv University
2004-2007
Electron (Ukraine)
2007
Na
β-Ca3(PO4)2-type phosphors Ca9-xMnxEu(PO4)7 have been synthesized by high-temperature solid-phase reactions. The crystal structure of Ca8MnEu(PO4)7 was characterized synchrotron X-ray diffraction. phase transitions, magnetic and photoluminescence (PL) properties were studied. abnormal reduction Eu3+ → Eu2+ in air observed according to PL spectra study confirmed photoelectron spectroscopy (XPS). shows partial coexistence Eu2+/3+ states. It reflects combination a broad band from the 4f65d1 4f7...
Modification of band structure induced by Sc in a novel material Gd<sub>2.97</sub>Ce<sub>0.03</sub>Ga<sub>2.5</sub>Sc<sub>1</sub>Al<sub>1.5</sub>O<sub>12</sub> results the enhancement energy transfer to Ce<sup>3+</sup>.
A new series of Sr-based phosphates, Sr9−xMnxEu(PO4)7, were synthesized using the high-temperature solid-state method in air. It was found that these compounds have same structure as strontiowhitlockite, which is a β-Ca3(PO4)2 (or β-TCP) structure. The concentration Mn2+ ions required to form pure strontiowhitlockite phase determined. An unusual partial reduction Eu3+ Eu2+ air observed and confirmed by photoluminescence (PL) electron spin resonance (ESR) spectra measurements. PL recorded...
The decay kinetics of Gd3Al2Ga3O12:Ce3+ single crystal luminescence were studied under dense laser excitation. It was shown that the times as well intensity Ce3+ depend on excitation density. observed effects ascribed to interaction between excitons features energy transfer from Ce3+. numerical simulation experimental results performed for justification proposed model.
To establish the connection between structure and luminescence properties in NASICON type structure, Na 3.6 Lu 1.8− x (PO 4 ) 3 : Eu 3+ compounds have been studied. The enhanced thermal stability of emission was obtained at E ex = 3.23 eV.
The luminescence properties of NASICON-type Na3.6M1.8(PO4)3 (M = Y, Lu) and Na3Sc2(PO4)3 phosphates, undoped rare earth-doped (RE Tb3+, Dy3+, Eu3+, Ce3+), were studied using synchrotron radiation in a wide energy region 4.5–45 eV. Intrinsic emission originating from self-trapped excitons with electron component localized at the 3d Sc states was detected both doped while only defect-related registered Na3.6M1.8(PO4)3. Emission RE ions substituting three-valent cations low-symmetry sites all...