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Large area, low cost space solar cells with optional wraparound contactsDesign parameters for two large area, low cost solar cells are presented, and electron irradiation testing, thermal alpha testing, and cell processing are discussed. The devices are a 2 ohm-cm base resistivity silicon cell with an evaporated aluminum reflector produced in a dielectric wraparound cell, and a 10 ohm-cm silicon cell with the BSF/BSR combination and a conventional contact system. Both cells are 5.9 x 5.9 cm and require 200 micron thick silicon material due to mission weight constraints. Normalized values for open circuit voltage, short circuit current, and maximum power calculations derived from electron radiation testing are given. In addition, thermal alpha testing values of absorptivity and emittance are included. A pilot cell processing run produced cells averaging 14.4% efficiencies at AMO 28 C. Manufacturing for such cells will be on a mechanized process line, and the area of coverslide application technology must be considered in order to achieve cost effective production.
Document ID
19820061428
Document Type
Conference Proceedings
Authors
Michaels, D. (Spectrolab, Inc. Sylmar, CA, United States)
Mendoza, N. (Spectrolab, Inc. Sylmar, CA, United States)
Williams, R. (Spectrolab, Inc. Sylmar, CA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1981
Subject Category
ENERGY PRODUCTION AND CONVERSION
Meeting Information
Photovoltaic Specialists Conference(Kissimmee, FL)
Distribution Limits
Public
Copyright
Other