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Degradation and passivation of CuInSe2
Institute of Energy Conversion, University of Delaware, Newark, Delaware 19716, USA.
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2012 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 101, no 11, 112108- p.Article in journal (Refereed) Published
Abstract [en]

The degradation of CuInSe2 absorbers in ambient air is observed by the decay of the quasi-Fermi level splitting under well defined illumination with time. The decay is faster and stronger in absorbers with [Cu]/[In]<1 than in ones with a higher ratio. It can be attributed to the oxidation of the sample. Epitaxial films containing no Na show very similar trends, indicating that decay and oxidation are independent of the Na content. A standard CdS layer commonly used as buffer in solar cells, terminates the decay even over many months. Aged absorbers can be completely restored by a KCNetch.

Place, publisher, year, edition, pages
2012. Vol. 101, no 11, 112108- p.
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Condensed Matter Physics
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URN: urn:nbn:se:uu:diva-222894DOI: 10.1063/1.4752165OAI: oai:DiVA.org:uu-222894DiVA: diva2:712470
Available from: 2014-04-15 Created: 2014-04-15 Last updated: 2017-12-05Bibliographically approved

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Larsen, Jes K

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