Study of effects of polishing and etching processes on Cd sub(1-x)Zn sub(x)Te surface quality

The effect of surface preparation on CdZnTe properties was investigated. Surface etching using bromine solutions enhances te elemental composition, resulting in a te rich surface layer that is prone to oxidize. This oxidation degrades the performance of the fabricated CZT gamma detector. Roughness r...

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Bibliographic Details
Published in:Journal of crystal growth 2010-07, Vol.312 (14), p.2098-2102
Main Authors: Bensouici, A, Carcelen, V, Plaza, J L, De Dios, S, Vijayan, N, Crocco, J, Bensalah, H, Dieguez, E, Elaatmani, M
Format: Article
Language:English
Subjects:
Cadmium zinc tellurides
Concentration (composition)
Crystal growth
Etching
Optimization
Polished
Polishing
Surface layer
Surface preparation
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Summary:The effect of surface preparation on CdZnTe properties was investigated. Surface etching using bromine solutions enhances te elemental composition, resulting in a te rich surface layer that is prone to oxidize. This oxidation degrades the performance of the fabricated CZT gamma detector. Roughness results were identical for samples polished with 1 and 3 mu m and subsequently etched in 2% Br-MeOH. The optimal concentration of etching was 2% Br-MeOH.
ISSN:0022-0248
DOI:10.1016/j.jcrysgro.2010.03.045