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METHOD OF TESTING SOLAR CELLS

  • US 20110267090A1
  • Filed: 11/18/2009
  • Published: 11/03/2011
  • Est. Priority Date: 11/19/2008
  • Status: Active Grant
First Claim
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1. A method of measuring the efficiency with which a solar cell converts incident photons into charge carriers, comprising the following steps:

  • (a) illuminating the solar cell with a broadband light source;

    (b) illuminating the solar cell with the broadband light source of which the intensity of a selected range of wavelengths has been reduced;

    (c) determining the change in the number of photons incident on the cell and the change in the number of charge carriers produced by the cell between steps (a) and (b); and

    (d) using the changes determined in step (c) to calculate the said efficiency measure.

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