Temperature dependent transient surface photovoltage spectroscopy of a Cu1.95Zn1.1Sn0.96Se4 kesterite single phase powder

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NOPPORN RUJISAMPHAN

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Publication Details

Author list: Dittrich Th., Valle Rios L.E., Kapil S., Gurieva G., Rujisamphan N., Schorr S.

Publisher: American Institute of Physics

Publication year: 2017

Journal: Applied Physics Letters (0003-6951)

Volume number: 110

Issue number: 2

ISSN: 0003-6951

eISSN: 1077-3118

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85009753486&doi=10.1063%2f1.4973539&partnerID=40&md5=b7a53e2199bf530985e2fa0e6fe7ca54

Languages: English-Great Britain (EN-GB)

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Abstract

An off-stoichiometric but single phase Cu1.95Zn1.1Sn0.96Se4 kesterite powder was investigated by temperature dependent transient surface photovoltage (SPV) spectroscopy. SPV signals excited at different wavelengths were transformed into SPV spectra that depended on the response time of measurement. Shallow electronic states and states with transition energies at 0.83 eV or 0.78… 0.9 eV were distinguished. The temperature dependence of the band gap of Cu1.95Zn1.1Sn0.96Se4 was obtained. Results were discussed on the basis of defects in Cu-poor and Zn-rich kesterite. © 2017 Author(s).

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