GaInP/GaAs Monolithic Tandem Concentrator Cells

D. J. Friedman, Sarah R. Kurtz, K. A. Bertness, A. E. Kibbler, C. Kramer, J. M. Olson, D. L. King, B. R. Hansen, J. K. Snyder

Research output: Contribution to conferencePaperpeer-review

24 Scopus Citations


This paper discusses design considerations for the recently introduced GaInP/GaAs monolithic tandem concentrator cell. The prototype device achieves a peak efficiency of 30.2% in a range of 140-180 suns, making this the first two-terminal device to demonstrate a verified efficiency exceeding 30%. At 425 suns the efficiency is still above 29%. We focus on the issues of grid design, top-cell thickness, and antireflectance coat. We also examine ways in which these aspects of the device may be modified to provide further performance improvements for future devices.

Original languageAmerican English
Number of pages4
StatePublished - 1994
EventProceedings of the 24th IEEE Photovoltaic Specialists Conference. Part 2 (of 2) - Waikoloa, HI, USA
Duration: 5 Dec 19949 Dec 1994


ConferenceProceedings of the 24th IEEE Photovoltaic Specialists Conference. Part 2 (of 2)
CityWaikoloa, HI, USA

NREL Publication Number

  • NREL/CP-451-6792


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