Vapor pressure scanning of nonstoichiometry in CdTe

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1006/jssc.1993.1049· OSTI ID:6785072

Greenberg, J H; Guskov, V N; Lazarev, V B; Shebershneva, O V ^[1]

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1. Kurnakov Inst. of General and Inorganic Chemistry, Moscow (Russian Federation)

Results of vapor pressure scanning of the cadmium telluride solidus surface are reported. The deviation from stoichiometry is found to be up to (0.6-13.8) [times] 10[sup [minus]3] at.% at temperatures from 945 to 1,360 K and vapor pressures from 2.3 to 87.2 kPa on the tellurium side, while that on the cadmium side is (0.1-3.3) [times] 10[sup [minus]3] at.% in the temperature and vapor pressure ranges from 695 to 992 K and from 0.5 to 57.3 kPa, respectively. The position of the congruent sublimation curve in the P-T-X phase space is discussed and some specifics of the solidus surface are outlined. The maximum congruent sublimation temperature was found to be 1,324 K, 41 K lower than the maximum melting point of CdTe. P(Cd)-T and P(Te[sub 2])-T projections of the Cd-Te phase diagram are presented. Partial molar enthalpies and entropies of the component elements are deduced for cadmium telluride. 12 refs., 3 figs., 2 tabs.

• OSTI ID: 6785072
• Journal Information: Journal of Solid State Chemistry; (United States), Journal Name: Journal of Solid State Chemistry; (United States) Vol. 102:2; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
CADMIUM COMPOUNDS
CADMIUM TELLURIDES
CHALCOGENIDES
DIAGRAMS
ENTHALPY
ENTROPY
EVAPORATION
MELTING
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
STOICHIOMETRY
SUBLIMATION
TELLURIDES
TELLURIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE