CdTe I: Solidus curve and composition-temperature-tellurium partial pressure data for Te-rich CdTe(s) from optical density measurements

• Published in: The Journal of physics and chemistry of solids 1996-04, Vol.57 (4), p.443-450
• Main Authors: Fang, Rei, Brebrick, R.F.
• Format: Article
• Language: English
• Subjects: A. chalcogenides; A. semiconductors; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; D. defects; D. phase equilibria; D. thermodynamic properties; Exact sciences and technology; Heat capacities of solids; Materials science; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Phase diagrams of other materials; Physics; Thermal properties of condensed matter; Thermal properties of crystalline solids; Thermodynamic properties
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/0022-3697(95)00251-0

Known weights of Cd and Te in a silica optical cell of known volume were reacted and the partial pressure of Te 2 determined by measuring the optical density of the vapor in the visible. The composition of the condensed phase or phases was calculated from the original weights and the amount of material in the vapor phase. The partial pressure measurements showed that the condensed phase was within the CdTe(s) homogeneity range at high temperatures and so Te-rich solidus points could be established as well as x Te - T- P Te 2 data. The values of 10 5( X Te − 1 2 ) are in the 1–10 range between 960 and 1320 K and are in fair agreement with the findings of Greenberg et al.