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Thermodynamic analysis of the CuGaSe2-In system

Authors
Journal
Journal of Crystal Growth
0022-0248
Publisher
Elsevier
Publication Date
Volume
89
Issue
4
Identifiers
DOI: 10.1016/0022-0248(88)90221-7

Abstract

Abstract Liquidus and solidus curves have been calculated for the CuGaSe 2-In system by assuming CuGa x In 1− x Se 2 chalcopyrite or Ga y In 1− y Se layer structure alloys as the solid phases. We use the liquidus interaction parameters derived from solubility parameters, molar volumes and electronegativities of elements, whereas the solidus interaction parameters are taken as adjustable parameters for fitting to the experimental data. The obtained results indicate that the calculated liquidus points for In solutions containing high concentrations of CuGaSe 2 solute correspond to the CuGa x In 1− x Se 2 solid phase and are fitted fairly well to the experimental data, and that the Ga y In 1− y Se is stable as the solid phase associated with liquid solutions containing lower concentrations of CuGaSe 2

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