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The ranges of isomorphous substitutions in thin films of CdSexTe1−xsolid solutions

Authors
Journal
Thin Solid Films
0040-6090
Publisher
Elsevier
Publication Date
Volume
97
Issue
3
Identifiers
DOI: 10.1016/0040-6090(82)90454-0

Abstract

Abstract The equilibrium temperature-composition ( T-x) phase diagram of the CdSeCdTe system was calculated theoretically. Condensation diagrams of “thick” (2–10 μm) and “thin” (0.1 μm) films of CdSe x Te 1− x solid solutions were constructed over wide ranges of substrate temperature (320–800 K) and of molecular flux density R +Σ of CdSe and CdTe vapours incident on the substrate ((2–200) × 10 22 m -2 s -1). It was shown by experiment that in the synthesis process at T s < 450 K thick films of CdSe x Te 1− x solid solutions undergo disintegration. The substrate temperature was found to be the main factor determining the ranges of isomorphous substitutions in CdSeCdTe films obtained under conditions close to equilibrium. The experimental data on the phase composition of CdSe x Te 1− x films are in quantitative agreement with the theoretically calculated binodal phase diagram of the CdSeCdTe system.

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