Surface Off-Stoichiometry of CuInS2 Thin-Film Solar Cell Absorbers
- In this paper, X-ray photoelectron and X-ray-excited Auger electron spectroscopy was used to investigate the chemical surface structure of CuInS2 thin-film solar cell absorbers.We find that the [In]/[Cu] surface composition can vary between 1.6 (±0.4) and 3.7 (±0.7), depending on relatively minor variations in the absorber formation process and/or whether additional wet-chemical treatments are performed. These variations are primarily due to differences in the Cu surface concentration. The corresponding change of the modified In Auger parameter is interpreted as being indicative of a change in the chemical environment of In as a function of Cu off-stoichiometry.
Author: | Marcus Bär, Joachim Klaer, Roberto Felix Duarte, Nicolas Barreau, Lothar Weinhardt, Regan G. Wilks, Clemens Heske, Hans-Werner Schock |
---|---|
URL: | https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6380521 |
ISSN: | 2156-3381 |
Title of the source (English): | IEEE Journal of Photovoltaics |
Document Type: | Scientific journal article peer-reviewed |
Language: | English |
Year of publication: | 2013 |
Volume/Year: | 3 |
Issue number: | 2 |
First Page: | 828 |
Last Page: | 832 |
Faculty/Chair: | Fakultät 1 MINT - Mathematik, Informatik, Physik, Elektro- und Informationstechnik / JP Photovoltaik |
Institution name at the time of publication: | Fakultät für Mathematik, Naturwissenschaften und Informatik (eBTU) / JP Photovoltaik |