Spectral current-voltage analysis of kesterite solar cells

Marie Buffiere, G. Brammertz, S. Oueslati, H. El Anzeery, J. Bekaert, K. Ben Messaoud, C. Köble, S. Khelifi, M. Meuris, J. Poortmans

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25 Citations (Scopus)


Current-voltage analysis using different optical band pass filters has been performed on Cu2ZnSnSe4 and Cu2ZnSn(S,Se) 4 thin-film solar cells. When using red or orange light (i.e. wavelengths above 600 nm), a distortion appears in the I-V curve of the Cu 2ZnSnSe4 solar cell, indicating an additional potential barrier to the current flow in the device for these conditions of illumination. This barrier is reduced when using a Cu2ZnSn(S,Se)4 absorber. Numerical simulations demonstrate that the barrier visible under red light could be explained by a positive conduction band offset at the front interface coupled with compensating defects in the buffer layer.

Original languageEnglish
Article number175101
JournalJournal of Physics D: Applied Physics
Issue number17
Publication statusPublished - 30 Apr 2014
Externally publishedYes



  • cross-over
  • CZTSe
  • kesterite
  • red kink
  • thin film solar cell

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Cite this

Buffiere, M., Brammertz, G., Oueslati, S., El Anzeery, H., Bekaert, J., Messaoud, K. B., Köble, C., Khelifi, S., Meuris, M., & Poortmans, J. (2014). Spectral current-voltage analysis of kesterite solar cells. Journal of Physics D: Applied Physics, 47(17), [175101]. https://doi.org/10.1088/0022-3727/47/17/175101