Correlation between physical, electrical, and optical properties of Cu 2ZnSnSe4 based solar cells

G. Brammertz, M. Buffière, Y. Mevel, Y. Ren, A. E. Zaghi, N. Lenaers, Y. Mols, C. Koeble, J. Vleugels, M. Meuris, J. Poortmans

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Abstract

We report on the physical, electrical, and optical properties of Cu 2ZnSnSe4 (CZTSe) solar cells based on an absorber layer fabricated by selenization of sputtered Cu, Zn, Sn multilayers. It is shown that the doping density as measured by drive level capacitance profiling is correlated exponentially to the Zn/Sn ratio of the CZTSe absorber as measured by energy dispersive X-ray spectroscopy. Furthermore, it is shown that the open circuit voltage of the cells, minority carrier lifetime, and peak position of the photoluminescence response of the absorber all correlate with the doping level and, therefore, with the Zn/Sn ratio measured in the absorber.

Original languageEnglish
Article number013902
JournalApplied Physics Letters
Volume102
Issue number1
DOIs
Publication statusPublished - 7 Jan 2013

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Brammertz, G., Buffière, M., Mevel, Y., Ren, Y., Zaghi, A. E., Lenaers, N., Mols, Y., Koeble, C., Vleugels, J., Meuris, M., & Poortmans, J. (2013). Correlation between physical, electrical, and optical properties of Cu 2ZnSnSe4 based solar cells. Applied Physics Letters, 102(1), [013902]. https://doi.org/10.1063/1.4775366