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a detailed study of the photo-injection annealing of thermally diffused inp solar cellsA detailed analysis of the annealing of thermally diffused InP solar cells fabricated by the Nippon Mining Co. is presented. The cells were irradiated with 1 MeV electrons, and the induced degradation is measured using deep level transient spectroscopy and low temperature (86 K) IV measurements. Clear recovery of the photovoltaic parameters is observed during low temperature (T is less than 300 K) solar illuminations (1 sun, AMO) with further recovery at higher temperatures (300 less than T less than 500 K). For example, the output of a cell which was irradiated up to a fluence of 1 x 10(exp 16) cm(sup -2) was observed to recover to within 5 percent of the pre-irradiation output. An apparent correlation between the recovery of I(sub sc) and the annealing of the H4 defect and of the minority carrier trapping centers is observed. An apparent correlation between the recovery of VO, and the annealing of the H5 defect is also observed. These apparent correlations are used to develop a possible model for the mechanism of the recovery of the solar cells.
Document ID
19940006909
Document Type
Conference Paper
Authors
Walters, R. J.
(Naval Research Lab. Washington, DC, United States)
Summers, G. P.
(Naval Research Lab. Washington, DC, United States)
Bruening, J.
(Naval Postgraduate School Monterey, CA., United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1993
Publication Information
Publication: NASA. Lewis Research Center, Proceedings of the 12th Space Photovoltaic Research and Technology Conference (SPRAT 12)
Subject Category
SPACECRAFT PROPULSION AND POWER
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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