Monocrystalline Silicon Sheet Production for Solar Cells by Advanced Ingot Technology

  • G. Fiegl
Conference paper


Recent technological advances in Czochralski crystal growth and ingot wafering by I.D. slicing have improved the economic picture of mono-crystalline sheet material production considerably to the extent that ingot technology is now considered a viable approach to meeting near term cost goals for solar cell material fabrication. Through the introduction of a continuous melt replenishment system, a highly efficient CZ process with minimized operating material costs is achieved. With a solution to cost effective monocrystalline ingot production, efficient ingot slicing becomes the focal point of attention. Wafering the ingot with a conventional I.D. saw presents a major problem in the form of high kerf loss, inflicting a significant impact on cell material costs. Through a low kerf blade construction, dynamic cutting edge control and simultaneous multiple ingot cutting, a major cost reduction for slicing the ingot can be achieved.


Transfer Tube Hexagonal Cross Section Thin Blade Stainless Steel Core Pull Speed 
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  1. (1).
    Rea, S.N., Texas Instruments Final Report, JPL Contract No. 954887, February, 1979.Google Scholar
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    Bonora, A.C., Near Term Implementation of Flat Plate Phtotvoltaic Cost Reduction under the Low Cost Solar Array Project, RFP No. Z-2-2908-113, June, 1978.Google Scholar

Copyright information

© ECSC, EEC, EAEC, Brussels and Luxembourg 1981

Authors and Affiliations

  • G. Fiegl
    • 1
  1. 1.Siltec CorporationMenlo ParkUSA

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