We report on organic solutions ofCuCl 2 ,InClg, and elemental sulfur for electrodepositing CuIn x Sv films. CuInS 2 and CuInSe 2 are promising solar cellmaterials; our work on CuInSg prefaces planned work on plating CuInSe 2 from nonaqueous solvents. Two promising solvent systems are (1) mixed propylcne carbonate and water and (2) mixed ethylene glycol, propionic acid, and water (Engelken et al., 1988). Gray-brown films ofCuInx Sy (nominally GuInS2 ) have been plated from both baths. Major problems include (1) reduction ofCu+2 to Cu and Cu x S by the solvent at high temperatures (T>l()0°C), hence depleting Cu+2,(2) poor adherence/uniformity, (3) controlling stoichiometry, and (4) sluggish indium deposition. The paper willdiscuss our routes to solving these problems and present filmdata.
Raza, Arif; Engelken, Robert; Kemp, Brandon; Khan, Imran; Aleem, Wasim; and Barber, Chris
"Electrodeposition of Copper Indium Sulfide Films from Organic Solutions,"
Journal of the Arkansas Academy of Science: Vol. 50
, Article 20.
Available at: http://scholarworks.uark.edu/jaas/vol50/iss1/20