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Temperature, illumination and fluence dependence of current and voltage in electron irradiated solar cellsEmperical equations have been derived from measurements of solar cell photovoltaic characteristics relating light generated current, IL, and open circuit voltage, VO, to cell temperature, T, intensity of illumination, W, and 1 Mev electron fluence, phi both 2 ohm-cm and 10 ohm-cm cells were tested. The temperature dependency of IL is similar for both resistivities at 140mw/sq cm; at high temperature the coefficient varies with fluence as phi 0.18, while at low temperatures the coefficient is relatively independent of fluence. Fluence dependent degration causes a decrease in IL at a rate proportional to phi 0.153 for both resistivities. At all intensities other than 560 mw/sq cm, a linear dependence of IL on illumination was found. The temperature coefficient of voltage was, to a good approximation, independent of both temperature and illumination for both resistivities. Illumination dependence of VOC was logarithmic, while the decrease with fluence of VOC varied as phi 0.25 for both resistivities.
Document ID
19740018400
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Obenschain, A. F. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Faith, T. J. (RCA Princeton, N. J., United States)
Date Acquired
September 3, 2013
Publication Date
December 1, 1973
Subject Category
Auxiliary Systems
Report/Patent Number
NASA-TM-X-70671
X-761-74-23
Accession Number
74N26513
Funding Number(s)
CONTRACT_GRANT: NAS5-21642
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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