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Content available remote Time dependence of the luminescence intensity in CdBr2 : AgCl,PbBr2 crystals under N2-laser excitation at room temperature
Bolesta I M, Kalivoshka B M, Karbovnyk I D, Lesivtsiv V M, Novosad I S, Novosad S S, Rovetskyy I M, Velgosh S R
Materials Science Poland
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2014
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Vol. 32, No. 4
604--609
EN
Results of optical-luminescence studies of polydoped photochromic CdBr2 : AgCl,PbBr2 crystals are presented. It is shown that the luminescence decrease vs. time under N2-laser excitation in the range of A-band of Pb2+ absorption is due to photochemical reactions. The empirical model
describing the decrease of the luminescence related to silver impurities due to photochemical processes is suggested. Model parameters (trapping cross-section – σ – and the amount of centres destroyed by irradiation – β) were determined using the comparative analysis of experimental and calculated luminescence decay curves.
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