0000000000547748
AUTHOR
A. S. Voloshinovskii
showing 3 related works from this author
Synchrotron radiation studies on luminescence of Eu2+-doped LaCl3 microcrystals embedded in a NaCl matrix
2012
Abstract LaCl3:Eu2+ microcrystals dispersed in the NaCl matrix have been obtained in the NaCl–LaCl3(1 mol.%)–EuCl3(0.1 mol.%) crystalline system. The low-temperature luminescent properties of these microcrystals have been studied upon the VUV and UV excitation by the synchrotron radiation. The spectroscopic parameters as well as decay time constants of Eu2+-doped LaCl3 host have been established. The excitation mechanism of divalent europium centers through energy transfer and reabsorption is discussed.
Luminescence center excited state absorption in tungstates
2001
The excited state absorption of intrinsic luminescence center (self-trapped exciton) in tungstates (CaWO4, ZnWO4, PbWO4 and CdWO4) was studied. The transient absorption and luminescence spectra, decay kinetics and lifetime dependencies on temperature have been measured. The model of self-trapped exciton and nature of observed absorption bands were discussed.
Time resolved luminescence spectroscopy of CsPbBr3 single crystal
2020
Abstract The work reports the results of spectroscopic and luminescence-kinetic studies of CsPbBr3 single crystal over 14–300 K temperature range. It is shown that at low temperatures the luminescence spectrum contains three narrow bands at 534, 537, and 541.5 nm exhibiting a fast decay and a broad emission band at ca. 560 nm with long decay. The evolution of the luminescence bands and their temporal characteristics with temperature are discussed from the viewpoint of possible emission mechanisms. The origin of the luminescence bands is discussed in relation with the observed features of their temporal characteristics. The mechanism of luminescence quenching for different emission band is s…