Time dependence of the luminescence intensity in CdBr2: AgCl,PbBr2 crystals under N2-laser excitation at room temperature
Author:
Bolesta I.1,
Kalivoshka B.1,
Karbovnyk I.1,
Lesivtsiv V.1,
Novosad I.1,
Novosad S.1,
Rovetskyy I.1,
Velgosh S.1
Affiliation:
1. Ivan Franko National University of Lviv, 1 Universytetska str., 79000, Lviv, Ukraine
Abstract
Abstract
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.
Publisher
Walter de Gruyter GmbH
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
1 articles.
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