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Large Efficiency Improvement in Cu2ZnSnSe4 Solar Cells by Introducing a Superficial Ge Nanolayer
Catalonia Institute for Energy Research (IREC).
Catalonia Institute for Energy Research (IREC).
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. (Electron Microscopy and Nanoengineering)ORCID iD: 0000-0002-0999-3569
Catalonia Institute for Energy Research (IREC).
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2015 (English)In: Advanced Energy Materials, ISSN 1614-6840, Vol. 5, no 21, 1501070Article in journal (Refereed) Published
Abstract [en]

A large improvement of Cu2ZnSnSe4 solar cell efficiency is presented based on the introduction of a Ge superficial nanolayer. This improvement is explained by three complementary effects: the formation of a liquid Ge-related phase, the possible reduction of Sn multicharge states, and the formation of GeOx nanoinclusions, which lead to an impressive solar cell (VOC) increase.

Place, publisher, year, edition, pages
2015. Vol. 5, no 21, 1501070
Keyword [en]
Cu2ZnSnSe4; Ge nanolayers; kesterite; thin film solar cells
National Category
Energy Systems Nano Technology
Research subject
Engineering Science with specialization in Materials Analysis; Engineering Science with specialization in Materials Science
Identifiers
URN: urn:nbn:se:uu:diva-265390DOI: 10.1002/aenm.201501070ISI: 000365273500011OAI: oai:DiVA.org:uu-265390DiVA: diva2:865464
Available from: 2015-10-28 Created: 2015-10-28 Last updated: 2017-01-25Bibliographically approved

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Publisher's full texthttp://dx.doi.org/10.1002/aenm.201501070

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Thersleff, ThomasLeifer, Klaus

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