Title Electrodeposition of CuInS2 from aqueous solution (II) electrodeposition of CuInS2 film
Author: Yukawa, Tohru; Kuwabara, Katsumi & Koumoto, Kunihito
Thin Solid Films, 1996
1996
http://www.sciencedirect.com/science/article/pii/S0040609096085458
More details: Copper indium disulphide, CuInS2 thin films were successfully prepared by electrodeposition without usual heat treatment in \{H2S\} atmosphere. Thin films were deposited from acidic aqueous solution containinng CuSO4, In2(SO4)3 and Na2S2O3 at ?��0.9 V vs. Ag/AgCl for 300?��1200 s. Single phase CuInS2 films were obtained at pH about 1.5 by the correct adjustment of the Cu2+/In3+ ratio, with the concentration of Na2S2O3 fixed at 400 mM. Well-crystallized films were obtained by annealing in vacuum at 673 K. From \{EDX\} analysis, it was found that the compound CuInS2 did not always exist in exact stoichiometry of Cu:In:S :1:2. The conduction type of the film changed from p to n in the indium-rich region. This result suggests the possibility of controlling the properties of thin films by varying the concentration of each chemical in the initial electrolytic solution. Deposition process,Electrochemistry,Solar cells,Sulphides
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