В журнале Dalton Transactions (IF 4,052) опубликована статья с участием сотрудника Института   И.П. Коскина (мнс, ЛОЭ):

Defect induced photoluminescence and triboluminescence in layered CaLaAl₃O₇

Abstract

In this work, a layered melilite structure, CaLaAl₃O₇, was synthesized and observed to have obvious luminescence behaviors under the stimuli of ultraviolet light and rubbing, which were called photoluminescence and triboluminescence, respectively. Considering the wide bandgap of CaLaAl₃O₇ and its specific crystal structure, the observed luminescence should be attributed to intrinsic defects. Both the photoluminescence and triboluminescence of CaLaAl₃O₇> show a strong dependence on the synthesis atmosphere, suggesting that they should be related to the oxygen vacancy. It is attractive to find that the triboluminescence of CaLaAl₃O₇ shows a distinct spectral characteristic compared to its photoluminescence. Further computational results suggest that the applied mechanical stimuli on the CaLaAl₃O₇ cell could promote the formation of the vacancies of oxygen and calcium, responsible for the spectral differences.

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