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Measurement and Characterization of Concentrator Solar Cells IIConcentrator solar cells are continuing to get more consideration for use in power systems. This interest is because concentrator systems can have a net lower cost per watt in solar cell materials plus ongoing improvements in sun-tracking technology. Quantitatively measuring the efficiency of solar cells under concentration is difficult. Traditionally, the light concentration on solar cells has been determined by using a ratio of the measured solar cell s short circuit current to that at one sun, this assumes that current changes proportionally with light intensity. This works well with low to moderate (<20 suns) concentration levels on "well-behaved" linear cells but does not apply when cells respond superlinearly, current increases faster than intensity, or sublinearly, current increases more slowly than intensity. This paper continues work on using view factors to determine the concentration level and linearity of the solar cell with mathematical view factor analysis and experimental results [1].
Document ID
20050206383
Document Type
Conference Paper
Authors
Scheiman, Dave (Ohio Aerospace Inst. Brook Park, OH, United States)
Sater, Bernard L. (PhotoVolt, Inc. Strongsville, OH, United States)
Chubb, Donald (NASA Glenn Research Center Cleveland, OH, United States)
Jenkins, Phillip (Ohio Aerospace Inst. Brook Park, OH, United States)
Snyder, Dave (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
September 7, 2013
Publication Date
April 1, 2005
Publication Information
Publication: 18th Space Photovoltaic Research and Technology Conference
Subject Category
Solar Physics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle20050206360Analytic Primary18th Space Photovoltaic Research and Technology Conference