Exploring the Cu‐In‐S System under Solvothermal Conditions near the Composition CuIn₅S₈

Abstract

Solvothermal syntheses of copper-indium-sulfides performed with different Cu:In:S ratios afforded crystallization of nanocrystalline Cu-In-S phases with compositions close to CuInS 2 , CuIn 3 S 5 , and CuIn 7 S 11 . Each sample shows a different and distinguishable morphology. The minority component CuInS 2 with wurtzite-type structure crystallizes as thin plates, which are preferably stacked parallel to black stacks. The component with composition CuIn 3 S 5 * Prof. Dr. L. Kienle