This article is cited in 1 paper

Impurity centers

Time dependence of the luminescence intensity in CdI$_2$–Cd and CdI$_2$–Ag crystals

I. M. Bolesta, S. R. Vel’gosh, I. D. Karbovnyk, V. N. Lesivtsiv, I. N. Rovetskyj

Ivan Franko National University of L'viv

Abstract: The decrease in the luminescence intensity (luminescence “fatigue”) of long-wavelength emission bands with time in CdI$_2$–Cd ($\lambda_{\mathrm{max}}$ = 700 nm) and CdI$_2$–Ag ($\lambda_{\mathrm{max}}$ = 680 nm) crystals upon exposure to light in the fundamental absorption region has been studied. The process parameters, i.e., the capture cross section $\sigma$ and the fraction $\beta$ of centers disappeared during interband irradiation, have been determined. The model of electronic processes has been proposed, within which experimental data have been consistently explained.

Received: 01.03.2012
Accepted: 29.03.2012

 English version: Physics of the Solid State, 2012, 54:10, 2061–2065

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