Formation and properties of vacuum-evaporated high conductivity n-type CdTe films

High dark conductivity CdTe films have been prepared by co-evaporating CdTe and cadmium. The structural, electrical and optical properties were investigated. The dark conductivity of the film increased monotonically with an increase in the amount of co-evaporated cadmium. The highest dark conductivi...

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Bibliographic Details
Published in:Thin solid films 1987-02, Vol.147 (1), p.75-81
Main Authors: Kawai, Yoshiji, Ema, Yoshinori, Hayashi, Toshiya
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Physics
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Thin film structure and morphology
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Summary:High dark conductivity CdTe films have been prepared by co-evaporating CdTe and cadmium. The structural, electrical and optical properties were investigated. The dark conductivity of the film increased monotonically with an increase in the amount of co-evaporated cadmium. The highest dark conductivity of the films obtained in this experiment was 1.4x10 -2Ω -1 cm -1. The film structure was of the zinc blende type with a preferential orientation of the (111) planes parallel to the substrate and fibrous. The crystallinity of the films was similar to that of films without cadmium doping. The dark conductivity vs. the reciprocal temperature characteristics showed regular aspects. High dark conductivity films will be useful for CdTe thin film device applications.
ISSN:0040-6090
1879-2731
DOI:10.1016/0040-6090(87)90042-3