Electron probe microanalysis of CuInSe2 and CuGaSe2 crystals

A correction procedure for the quantitative electron probe microanalysis of nonstoichiometric crystals in the system CuInSe₂–CuGaSe₂ is presented and applied to the analysis of the terminal members of the mixtures. In CuInSe₂ samples a precipitation of Cu₂Se takes place due to an evaporation of volatile compounds with a composition ratio In: Se = 2:3. A similar reaction was observed in the case of CuGaSe₂.