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Diffusion-Controlled Electrodeposition and Characteristics of CdTe Films

โœ Scribed by Rakhshani, A. E. ;Ramazaniyan, H. A.

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
289 KB
Volume
172
Category
Article
ISSN
0031-8965

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โœฆ Synopsis

Cadmium telluride was deposited on various conducting substrates from an acidic bath of CdSO 4 (1 M) containing up to 200 ppm of TeO 2 . The deposition process which is a six-electron-transfer reaction, is described satisfactorily by a model developed based on the diffusion of HTeO 2 cations. The film structure, composition and the effect of annealing were studied. The optical dispersion of films which agrees well with that for the single crystal can be described by the classical boundelectron dispersion model. The number of bound electrons per CdTe molecule which participate in the dispersion process was determined to be 3.0. Annealing in air at 350 C has no influence on dispersion.

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