A5005204847- Luminescence Properties of Advanced Materials
- Radiation Detection and Scintillator Technologies
- Inorganic Fluorides and Related Compounds
- Advanced Semiconductor Detectors and Materials
- Optical and Acousto-Optic Technologies
- Solid-state spectroscopy and crystallography
- Optical Systems and Laser Technology
- Nanocluster Synthesis and Applications
- Carbon and Quantum Dots Applications
- Advanced Chemical Physics Studies
- Crystal Structures and Properties
- Inorganic Chemistry and Materials
- Semiconductor materials and devices
- Optical Polarization and Ellipsometry
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
Lviv Polytechnic National University
1996-2022
Institute of Mathematics
2020
The problem of new methods temperature measurements has become vital recently. One the trends in search non-contact measurement is based on changes optical characteristics caused by changes. these interference-optical method recording changing interference pattern light transmission through anisotropic crystal when changed.
Studies of photoinductive dichroism allow to define the orientation colour centres. The absorption testifies fact that oscillators, responsible for long-wave band M+A-centres, are located along 〈100〉 crystallographic directions, and high-energetic 〈110〉 directions. Various impurities cause unequal perturbations in crystal lattice. determination kinetic parameters reorientation processes simple complex centres allows establishing structure aggregative centre. size impurity ion influences...
It has been established that dominant luminescence centers both in layered CdJ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> crystals and related to them nanostructures are associated donor-acceptor complexes of intrinsic point defects within the cation vacancy interstitial cadmium. Layered structure results two different types such pairs with spatial orientation: "cation - cadmium structural layer" vacancy-interstitial between...
ABSTRACT According to the spectra of stationary X-ray excited luminescence (XEL) BaF2: Eu nanophosphors at 80 and 294 K, it was revealed that thermal annealing fine-grained nanoparticles (d = 35 nm) in range 400–1000°C, which is accompanied by an increase their sizes 58–120 nm, does not result effective changes charge state Eu3 + → Eu2 activator, contrast CaF2: nanoparticles. The maximum light output 590 nm emission band Eu3+ ion observed temperature 600°C with average size 67 nm. subsequent...
Studies of photoinductive dichroism allow to define the orientation colour centres. The absorption testifies fact that oscillators, responsible for long-wave band M+A-centres, are located along 〈100〉 crystallographic directions, and high-energetic 〈110〉 directions. Various impurities cause unequal perturbations in crystal lattice. determination kinetic parameters reorientation processes simple complex centres allows establishing structure aggregative centre. size impurity ion influences...
The dependence of the deposition rate thin Y 2 O 3 :Eu films during RF sputtering on pressure and composition working gas is studied.The presence optimal gas, at which maximal, established.The influence Eu 3activator concentration brightness cathodoluminescence explanation obtained results carried out within limits backscattering back-diffusion effects, special attention paid to resonant charge-exchange mechanism.Досліджено залежність швидкости нанесення тонких плівок за ВЧ-розпорошення від...