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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.

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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
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