Substrate material of iron-nickel alloy metal foil for CIGS solar cells
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United States of America Patent
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May 16, 2017
Grant Date -
Nov 27, 2014
app pub date -
Dec 28, 2011
filing date -
Nov 16, 2011
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Abstract
The present invention relates to an exclusive alloy substrate material for CIGS solar cells. Particularly, the present invention provides a substrate material having a thermal expansion coefficient similar to that of a CIGS layer. The substrate material according to the present invention may prevent damage such as interlayer separation due to differing thermal expansion coefficients from occurring because the substrate material has a thermal expansion coefficient similar to that of the CIGS layer.
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