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Collection efficiency measurements for solar cell researchA system was established for measuring absolute, spectral collection efficiency that is well suited to solar cell research and development. Determination of spectral collection efficiency involves measurements of the incident photon intensity, the device reflection coefficient, and the cell short circuit current. A monochromatic photon flux is obtained with a high intensity Bausch and Lomb monochromator, and an Epply thermopile detector is used to measure incident intensity. Normal incidence reflectivity measurements are achieved with a prism type beam splitter. The experimental approach is discussed, measurements of the reflectivity of evaporated silver films are considered. Collection efficiency measurements of silicon solar cells are presented, and collection efficiency studies of Cu20 solar cells are discussed.
Document ID
19770023599
Document Type
Conference Paper
Authors
Hampton, H. L. (Joint Center for Graduate Study Richland, WA, United States)
Olsen, L. C. (Joint Center for Graduate Study Richland, WA, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Publication Information
Publication: NASA. Lewis Res. Center Terrest. Photovoltaic Meas., 2
Subject Category
ENERGY PRODUCTION AND CONVERSION
Funding Number(s)
CONTRACT_GRANT: NSF AER-75-20501
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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