Concentrator Cell Efficiency Measurement Errors Caused by Unfiltered Xenon Flash Solar Simulators

Carl R. Osterwald, Mark W. Wanlass, Tom Moriarty, Myles A. Steiner, Keith A. Emery

Research output: Contribution to conferencePaperpeer-review

10 Scopus Citations

Abstract

In this paper, we examine the effects of increased irradiance into one subcell of triple-absorber concentrator solar cells during efficiency measurements. This situation can easily occur when unfiltered xenon flash solar simulators are used for illumination. We demonstrate how excess irradiance into bottom subcells causes artificially increased fill factors, and that commonly used measurement procedures are unable to account for any excess irradiance. The effect always results in efficiency values that are too high.

Original languageAmerican English
Pages149-153
Number of pages5
DOIs
StatePublished - 2014
Event10th International Conference on Concentrator Photovoltaic Systems, CPV 2014 - Albuquerque, United States
Duration: 7 Apr 20149 Apr 2014

Conference

Conference10th International Conference on Concentrator Photovoltaic Systems, CPV 2014
Country/TerritoryUnited States
CityAlbuquerque
Period7/04/149/04/14

NREL Publication Number

  • NREL/CP-5J00-60762

Keywords

  • Concentrator
  • Efficiency
  • Error
  • Measurement
  • Photovoltaic
  • Solar

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