New Structural Investigations in the Cu2Se(S)-In2Se(S)3/ Cu2Se(S)-Ga2Se(S)3 Phase Diagram

摘要

Non-stoichiometry is a characteristic feature of ternary chalcopyrites like CU-III-VI2 (III=In,Ga; VI=S,Se). The results of a comparative study of structural trends within the homogeneity region of the chalcopyrite type α-phase of the Cu2Se(S)-In2Se3(S) and Cu2Se(S)-Ga2Se3(S) quasibinary phase diagrams are presented. Powder samples of Cu-rich and Cu-poor [Cu2Se(S)]_(1-y)-[In2Se3(S)]_y as well as [Cu2Se(S)]_(1-y)[Ga2Se3(S)]_y alloys were prepared (0.4