Title
Relaxation of light-induced absorption in Cr-doped <tex>$Bi_{12}TiO_{20}$</tex> crystals Relaxation of light-induced absorption in Cr-doped <tex>$Bi_{12}TiO_{20}$</tex> crystals
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Sofija ,
Subject
Chemistry
Source (journal)
Izvestija po himija. - Sofija
Volume/pages
45(2013) , p. 218-221
ISSN
0324-1130
ISI
000342410000047
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
The lifetime of the excited charge carriers in Cr-doped Bi12TiO20 (BTO) crystals is characterized by measuring the optical density changes after nanosecond pulse excitation. It is found that the Cr-addition in the BTO crystal structure significantly increases the relaxation decay time, which is attributed to the increased densities of trapping centers. The observed relaxation dynamics follows a double-exponential behavior, assigned to the two long-lived intermediate levels in BTO:Cr crystal structure.
E-info
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