Methods for Measuring Solar Cell Efficiency Independent of Reference Cell or Light Source

K. A. Emery, C. R. Osterwald, T. W. Cannon, D. R. Myers, J. Burdick, T. Glatfelter, W. Czubatyj, J. Yang

Research output: Contribution to conferencePaperpeer-review

42 Scopus Citations


Accurate measurement of the photovoltaic conversion efficiency under standard test conditions is essential for meaningful comparisons of the device performance of different types of solar cells. A methodology is presented for calibrating reference cells and calculating spectral mismatch factors, and then using these to obtain the corrected short-circuit current with respect to standard test conditions. Using this technique, the current, and hence efficiency, of a given photovoltaic device can be measured with an accuracy of better than 2%, independent of the spectral response of the reference cell or the spectral irradiance of the light source. A second method does not use a reference cell, but depends on an absolute spectral irradiance measurement, and has an accuracy of approximately 5%.

Original languageAmerican English
Number of pages6
StatePublished - 1985
EventEighteenth IEEE Photovoltaic Specialists Conference-1985 - Las Vegas, Nevada
Duration: 21 Oct 198525 Oct 1985


ConferenceEighteenth IEEE Photovoltaic Specialists Conference-1985
CityLas Vegas, Nevada

Bibliographical note

Work performed by Solar Energy Research Institute, Golden, Colorado, and Energy Conversion Devices, Inc., Troy, Michigan

NREL Publication Number

  • SERI/CP-213-7824


  • conversion efficiency
  • photovoltaics (PV)
  • PV
  • solar cells
  • spectral irradiance


Dive into the research topics of 'Methods for Measuring Solar Cell Efficiency Independent of Reference Cell or Light Source'. Together they form a unique fingerprint.

Cite this