Dark conductivity, photoconductivity, and light-induced absorption in photorefractive sillenite crystals

Authors
Mosquera, L de Oliveira, I Frejlich, J Hernandes, AC Lanfredi, S Carvalho, JF
Citation
L. Mosquera et al., Dark conductivity, photoconductivity, and light-induced absorption in photorefractive sillenite crystals, J APPL PHYS, 90(6), 2001, pp. 2635-2641
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF APPLIED PHYSICS
ISSN journal
00218979 → ACNP
Volume
90
Issue
6
Year of publication
2001
Pages
2635 - 2641
Database
ISI
SICI code
0021-8979(20010915)90:6<2635:DCPALA>2.0.ZU;2-E
Abstract
We measure the bulk and light-induced absorption as well as the dark- and p hotoconductivity in doped and undoped photorefractive Bi12TiO20 crystals an d compare the results obtained using different techniques. From these data we compute the quantum efficiency for the photogeneration of charge carrier s and the carriers mobility-lifetime product, and characterize the suitabil ity of these crystals for holographic recording. A two-center model theory is shown to adequately describe absorption and photoconduction in these mat erials. (C) 2001 American Institute of Physics.