Properties of CuInGaSe2 solar cells based upon an improved three-stage process

K. Sakurai, R. Hunger, N. Tsuchimochi, T. Baba, K. Matsubara, P. Fons, A. Yamada, T. Kojima, T. Deguchi, H. Nakanishi, S. Niki

Research output: Contribution to journalConference articlepeer-review

34 Citations (Scopus)


Recently, we have developed an improved three-stage growth method by simultaneously using a pyrometer and a thermocouple, to accurately control thickness and composition during growth of CuInGaSe2 (CIGS). As a result, we have obtained solar cells that show preliminary efficiencies up to 16.4% without anti-reflection coating. Using the technique, we have investigated possible mechanism behind non-optimal cell efficiency, focusing on the effects of the molybdenum contact layer. Some additional advantages of our pyrometer monitoring technique are described. Optimizing the properties of Mo layer leads to suppression of Na segregation and distinctive damage to the CIGS surface, improving both cell performance and reproducibility.

Original languageEnglish
Pages (from-to)6-10
Number of pages5
JournalThin Solid Films
Publication statusPublished - 2003 May 1
Externally publishedYes
EventProceedings of Symposium B - Strasbourg, France
Duration: 2002 Jun 182002 Jun 21


  • CuInGaSe
  • Molybdenum
  • Pyrometer
  • Sodium
  • Solar cells
  • Three stage process

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry


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