| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9618666 | Solar Energy Materials and Solar Cells | 2005 | 8 Pages |
Abstract
CuInS2 films were prepared by the spray pyrolysis method using either copper-rich solutions or the recrystallization of low-crystallinity film in the presence of an intentionally deposited CuxS layer. KCN-etched films were characterized by XRD, SEM and EDX. The Cu/In molar ratio of 1.5-4.0 in the solution resulted in well-crystallized CuInS2 films with the mean crystallite size of 120Â nm. SEM study showed nonuniform surface with irregularly placed large grain domains in the flat film. The two-step process resulted in a uniform film with the crystallite size of 50Â nm. Films exhibited an In-rich composition. Solar cells based on a recrystallized absorber showed an improved quantum efficiency spectrum.
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Authors
M. Krunks, O. Kijatkina, A. Mere, T. Varema, I. Oja, V. Mikli,