GERMANIUM ENRICHED SILICON MATERIAL FOR MAKING SOLAR CELLS
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United States of America Patent
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Jun 23, 2014
filing date -
Jun 16, 2008
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Abstract
Techniques for the formation of silicon ingots and crystals using silicon feedstock of various grades are described. A common feature is adding a predetermined amount of germanium to the melt and performing a crystallization to incorporate germanium into the silicon lattice of respective crystalline silicon materials. Such incorporated germanium results in improvements of respective silicon material characteristics, including increased material strength and improved electrical properties. This leads to positive effects at applying such materials in solar cell manufacturing and at making modules from those solar cells.
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