19.9%-Efficient ZnO/CdS/CuInGaSe2 Solar Cell with 81.2% Fill Factor

Ingrid Repins, Miguel A. Contreras, Brian Egaas, Clay DeHart, John Scharf, Craig L. Perkins, Bobby To, Rommel Noufi

Research output: Contribution to journalArticlepeer-review

2059 Scopus Citations


We report a new record total-area efficiency of 19.9% for CuInGaSe 2-based thin-film solar cells. Improved performance is due to higher fill factor. The device was made by three-stage co-evaporation with a modified surface termination. Growth conditions, device analysis, and basic film characterization are presented.

Original languageAmerican English
Pages (from-to)235-239
Number of pages5
JournalProgress in Photovoltaics: Research and Applications
Issue number3
StatePublished - 2008

NREL Publication Number

  • NREL/JA-520-42434


  • CIGS
  • Diode quality
  • Fill factor
  • Recombination
  • Record efficiency
  • Saturation current
  • Surface
  • Thin film solar cells


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