Etude du diagramme ternaire CuInSe2ZnSeIn2Se3

The system CuInSe₂ZnSeIn₂Se₃ has been investigated. A large domain of thiogallate-type compounds was found with a number of cation vacancies less or equal to that of ZnIn₂Se₄ compound. A study with a least-squares method was performed on the experimental parameters a and c and relations with the compositions are given. The blende-structure model with cation vacancies was used for evaluation of the vacancy radius [r₁ = (0.97 ± 0.05) Å] in the thiogallate compounds.