Indications of Short Minority-Carrier Lifetime in Kesterite Solar Cells

I. L. Repins, H. Moutinho, S. G. Choi, A. Kanevce, D. Kuciauskas, P. Dippo, C. L. Beall, J. Carapella, C. Dehart, B. Huang, S. H. Wei

Research output: Contribution to journalArticlepeer-review

72 Scopus Citations


Solar cells based on kesterite absorbers consistently show lower voltages than those based on chalcopyrites with the same bandgap. We use three different experimental methods and associated data analysis to determine minority-carrier lifetime in a 9.4%-efficient Cu2ZnSnSe4 device. The methods are cross-sectional electron-beam induced current, quantum efficiency, and time-resolved photoluminescence. These methods independently indicate minority-carrier lifetimes of a few nanoseconds. A comparison of current-voltage measurements and device modeling suggests that these short minority-carrier lifetimes cause a significant limitation on the voltage produced by the device. The comparison also implies that low minority-carrier lifetime alone does not account for all voltage loss in these devices.

Original languageAmerican English
Article numberArticle No. 084507
Number of pages5
JournalJournal of Applied Physics
Issue number8
StatePublished - 28 Aug 2013

NREL Publication Number

  • NREL/JA-5200-59170


  • kesterite
  • photovoltaic
  • PV
  • solar cells
  • thin film


Dive into the research topics of 'Indications of Short Minority-Carrier Lifetime in Kesterite Solar Cells'. Together they form a unique fingerprint.

Cite this