, Volume 22, Issue 5, pp 1635-1641

Phase relations in the ternary system Cu-In-Se

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Abstract

The phase relations of the ternary system Cu-In-Se were studied at 750° C by quenching experiments. Special attention was given to the region CuInSe2In2Se3-In4Se3. Only four ternary phases with extended homogeneity ranges were found to exist. They were characterized by X-ray powder diffraction, electron microprobe analysis (EK8PA)' end optical microscopy. Differential thermal analysis (DTA) investigations allowed us to construct theT-x diagram of the Cu2Se-In2Se3. out between 47 and 100 mol% In2Se3. Besides, it was also possible to give a tentative diagram of the solid-liquid equilibria at 750° C and to get some information on the sub-solid existence fields beside the Cu2Se-In2Se3 cut.