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![SOLAR by KYOCERA](../../images/spece.gif) |
Initial Production of Silicon Ribbon Crystal Solar Cells |
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In 1975, Kyocera began developing solar cells using the Edge-defined Film-fed Growth (EFG) process, which involves drawing out a sapphire-substrate ribbon. In 1979, the company succeeded in continuously drawing silicon ribbon, which made it possible to begin mass production.
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