Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9829277 | Journal of Crystal Growth | 2005 | 10 Pages |
Abstract
Thin films of zinc sulphide (ZnS) were prepared by spray pyrolysis using two mixed aqueous solutions: (a) dehydrated zinc acetate (10â2Â M) and thiourea (4Ã10â2Â M) in bidistillated water; (b) zinc chloride (10â2Â M) and thiourea (4Ã10â2Â M) in bidistillated water. The structure, surface morphology, chemical composition and optical properties of these films were investigated as a function of initial (Zn:S) ratio in the solution, which varied between (1:1) and (1:6) for both solutions. This parameter was optimized in order to obtain films with a good stoichiometry, crystalline quality and high transmittance. It was found that films prepared from solution A, with a (Zn:S) ratio equal to (1:4) have the largest crystal size, smoothest surface, high optical transmittance and a (Zn/S) ratio in films equal to 0.91, as determined by XPS.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
M.C. López, J.P. Espinos, F. MartÃn, D. Leinen, J.R. Ramos-Barrado,