COPPER SULFIDES BY CHEMICAL SPRAY-PYROLYSIS PROCESS

The chemistry of formation of copper sulfide and copper indium disulfi de films by the chemical spray pyrolysis process has been investigated . It was established that the formation of copper sulfide films by the spray process of water solutions of CuCl2 and SC(NH2)(2) passes throu gh the stage of formation of intermediate complex compound Cu(SCN2H4)C l . H2O in the initial solution. Thermal behaviour studies in air exhi bit rearrangement of the complex at temperatures higher than 210 degre es C with formation of copper sulfide. Copper oxide is the decompositi on product at temperatures higher than 700 degrees C in air. CuInS2 is formed by the reaction between copper and indium sulfides.