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Low cost monocrystalline silicon sheet fabrication for solar cells by advanced ingot technologyThe continuous liquid feed (CLF) Czochralski furnace and the enhanced I.D. slicing technology for the low-cost production of monocrystalline silicon sheets for solar cells are discussed. The incorporation of the CLF system is shown to improve ingot production rate significantly. As demonstrated in actual runs, higher than average solidification rates (75 to 100 mm/hr for 150 mm 1-0-0 crystals) can be achieved, when the system approaches steady-state conditions. The design characteristics of the CLF furnace are detailed, noting that it is capable of precise control of dopant impurity incorporation in the axial direction of the crystal. The crystal add-on cost is computed to be $11.88/sq m, considering a projected 1986 25-slice per cm conversion factor with an 86% crystal growth yield.
Document ID
19810042709
Document Type
Conference Proceedings
Authors
Fiegl, G. F. (Siltec Corp. Menlo Park, CA, United States)
Bonora, A. C. (Siltec Corp. Menlo Park, Calif., United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Subject Category
ENERGY PRODUCTION AND CONVERSION
Meeting Information
Photovoltaic Specialists Conference(San Diego, CA)
Distribution Limits
Public
Copyright
Other