Amorphous Transparent Conductors for PV Applications

J. D. Perkins, T. Gennett, J. E. Leisch, R. Sundaramoorthy, I. L. Repins, M. F.A.M. Van Hest, D. S. Ginley

Research output: Contribution to conferencePaperpeer-review

23 Scopus Citations


Transparent conducting oxides (TCOs) with qualitatively better resistance to humidity than ZnO, the traditional Cu(In,Ga)Se2 (CIGS) TCO, are needed to reduce the water-induced degradation of CIGS photovoltaics (PV). Amorphous In-Zn-O (a-IZO) is found both to act as a water vapor transport barrier and to be essentially inert in damp heat testing at 85°C, 85%RH (85/85). In particular, no significant reduction in conductivity or transparency was observed after 40 days at 85/85. In initial PV application testing, a-IZO-finished CIGS solar cells have demonstrated 16.4% efficiency, essentially equal to equivalent CIGS cells finished with Al-doped ZnO.

Original languageAmerican English
Number of pages3
StatePublished - 2010
Event35th IEEE Photovoltaic Specialists Conference, PVSC 2010 - Honolulu, HI, United States
Duration: 20 Jun 201025 Jun 2010


Conference35th IEEE Photovoltaic Specialists Conference, PVSC 2010
Country/TerritoryUnited States
CityHonolulu, HI

NREL Publication Number

  • NREL/CP-520-47723


  • amorphous conductors
  • thin-film photovoltaics


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