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Photoluminescence investigation of Cu2ZnSnS4 thin film solar cells
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2015 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 582, 146-150 p.Article in journal (Refereed) Published
Abstract [en]

Cu2ZnSnS4 (CZTS) is a promising absorber for thin film solar cells which is non-toxic and consists of only abundant elements. In order to achieve higher solar cell efficiencies for this material, a better understanding about its defect structure is necessary. In this paper photoluminescence (PL) from sputtered CZTS thin film solar cells which differ in buffer layer thickness was studied. In the PL spectra three broad peaks could be distinguished between 0.9 and 1.3 eV. The PL measurements as a function of temperature and excitation power density revealed the presence of potential fluctuations. The separations between the band edge of the photoluminescence excitation signal and the PL emission peaks are large, which indicates that PL involves trapping of carriers by deep-level defects.

Place, publisher, year, edition, pages
2015. Vol. 582, 146-150 p.
Keyword [en]
Copper Zinc Tin Selenide, Thin Film Solar Cells, Photoluminescence Spectroscopy
National Category
Other Engineering and Technologies Other Materials Engineering
Research subject
Engineering Science with specialization in Electronics
Identifiers
URN: urn:nbn:se:uu:diva-252162DOI: 10.1016/j.tsf.2014.10.079ISI: 000352225900031OAI: oai:DiVA.org:uu-252162DiVA: diva2:810370
Available from: 2015-05-07 Created: 2015-05-04 Last updated: 2017-12-04Bibliographically approved

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Ericson, ToveScragg, Jonathan J.Platzer-Björkman, Charlotte

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