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Proceedings Paper

Influence of bismuth oxide purity and growth conditions on properties of photoexcited charge carriers in sillenite-structure crystals
Author(s): Elena V. Mokrushina; Yu. B. Afanasiev; A. A. Nechitailov; A. A. Petrov; Victor V. Prokofiev
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Paper Abstract

Influence of bismuth oxide purity and growth conditions on photorefractive properties of sillenite structure materials has been analyzed. Various impurities present in starting materials affect significantly on photoexcited charge carriers in sillenites. Small concentrations of chromium (approximately 10-4 wt.%) in Bi12TiO20 crystals decreases the diffusion length Ld of photoinduced charge carriers. Cr- doped BTO crystals were found to be sensitive in near IR region due to 'tails' in their absorption spectrum. Sillenite structure crystals grown in an oxygen-free atmosphere contain lower concentration of acceptor centers and demonstrate higher photoconductivity.

Paper Details

Date Published: 14 July 1997
PDF: 6 pages
Proc. SPIE 3178, Solid State Crystals: Growth and Characterization, (14 July 1997); doi: 10.1117/12.280730
Show Author Affiliations
Elena V. Mokrushina, A.F. Ioffe Physical-Technical Institute (Russia)
Yu. B. Afanasiev, A.F. Ioffe Physical-Technical Institute (Russia)
A. A. Nechitailov, A.F. Ioffe Physical-Technical Institute (Russia)
A. A. Petrov, A.F. Ioffe Physical-Technical Institute (Russia)
Victor V. Prokofiev, Univ. of Joensuu (Finland)


Published in SPIE Proceedings Vol. 3178:
Solid State Crystals: Growth and Characterization
Jozef Zmija; Andrzej Majchrowski; Jaroslaw Rutkowski; Jerzy Zielinski, Editor(s)

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