Temperature-Dependent Spectral Mismatch Corrections

Carl R. Osterwald, Mark Campanelli, Tom Moriarty, Keith A. Emery, Rafell Williams

Research output: Contribution to journalArticlepeer-review

20 Scopus Citations


This paper develops the mathematical foundation for a translation of solar cell short-circuit current from one thermal and spectral irradiance operating condition to another without the use of ill-defined and error-prone temperature coefficients typically employed in solar cell metrology. Using the partial derivative of quantum efficiency with respect to temperature, the conventional isothermal expression for spectral mismatch corrections is modified to account for changes of current due to temperature; this modification completely eliminates the need for short-circuit-current temperature coefficients. An example calculation is provided to demonstrate use of the new translation.

Original languageAmerican English
Article number7210143
Pages (from-to)1692-1697
Number of pages6
JournalIEEE Journal of Photovoltaics
Issue number6
StatePublished - 2015

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

NREL Publication Number

  • NREL/JA-5J00-64369


  • Characterization
  • measurement
  • metrology
  • photovoltaic (PV) cells
  • PV modules
  • short-circuit current
  • solar cells
  • spectral irradiance
  • Temperature coefficient (TC)


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