Ternary Solid Phase Equilibria in the Systems (Ag,In,Au)-(Cd,He)-Te
Abstract
The ternary phase diagrams of the silver cadmium tellurides, indium cadmium tellurides, gold cadmium tellurides, silver mercury tellurides, indium mercury tellurides, and gold mercury tellurides systems were determined using xray powder diffraction and existing thermochemical data. In closed thermodynamic systems silver, indium, and gold were shown to be stable with respect to stoichiometric cadmium tellurides and silver, indium reactive towards stoichiometric mercury tellurides. The results clearly show the high chemical reactivity of metals studied with mercury tellurides is due to the high solid phase vapor pressure of the group two element, mercury, and the thermochemical stabilities of metal-tellurium compounds. The findings of the work support the importance of thermochemical data for the prediction of stable, metallic solid phases in ternary systems and that current contacting technology may severely limit the use of mercury tellurides in electronic devices. Keywords: Ternary phase diagrams; Solid phase equilibria; Thin films; Compound semiconductors; Opto-electronic devices; X-ray powder diffraction; Thermodynamic properties.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 22, 1988
- Accession Number
- ADA198679
Entities
People
- David K. Shuh
- R. Stanley Williams
Organizations
- University of California, Los Angeles