Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
80556 | Solar Energy Materials and Solar Cells | 2006 | 7 Pages |
Abstract
When replacing the generally used CdS-buffer in chalcopyrite-based solar cells by an ILGAR-ZnO layer, the absorber has to be pre-treated in a Cd2+/NH3-containing solution in order to yield high efficiency devices. The purpose of this article is to explain the observed formation of Cd-compounds on top of the Cd2+/NH3-treated Cu(In,Ga)(S,Se)2 absorber surface. Within this framework, results from X-ray-based electron spectroscopies of the modified absorber surfaces and an X-ray diffraction and UV–Vis investigation of the film formed at the surface of the treatment solution are discussed.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
M. Bär, L. Weinhardt, C. Heske, H.-J. Muffler, E. Umbach, M.Ch. Lux-Steiner, Th.P. Niesen, F. Karg, Ch.-H. Fischer,