The features of deformation-stimulated RbI luminescence
Myasnikova L.N. Maratova A.G. Shunkeyev K.S.
2021L.N. Gumilyov Eurasian National University
Eurasian Journal of Physics and Functional Materials
2021#5Issue 4218 - 228 pp.
This paper studies deformation-stimulated features of radiative relaxation of self-trapped excitons and recombination assembly of exciton-like luminescence in RbI crystal. Methods of research were luminescence and thermal activation spectroscopy. The identity of the mechanism of manifestation of the X-ray luminescence, tunnel luminescence and thermally stimulated luminescence spectra were found in the elastically deformed RbI crystal, interpreted by the luminescence of self-trapped exciton, tunnel recharge of F′, VK -pairs and thermally stimulated recombination of e−, VK -centers, respectively. The temperatures of the maximum destruction peaks of thermally stimulated luminescence, their spectral composition and activation energies were determined experimentally, on the basis of which the mechanisms of recombination assembly of exciton-like luminescences in a RbI crystal were interpreted. Uniaxial elastic deformation leads to the effective formation of point radiation defects ( F′, HA, VK-centers) in comparison with an unbroken lattice, where the predominant mechanism is the association of interstitial atoms ( H -centers) with the formation of (Formula presented) -centers.
RbI crystal , thermostimulated luminescence , tunnel luminescence , uniaxial elastic deformation , X-ray luminescence
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K. Zhubanov Aktobe Regional University, Aktobe, Kazakhstan
K. Zhubanov Aktobe Regional University
10 лет помогаем публиковать статьи Международный издатель
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