Serial connection of thin-layer solar cells
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United States of America Patent
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Jul 15, 2014
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N/A
app pub date -
Sep 17, 2010
filing date -
Sep 20, 2009
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Abstract
The invention relates to a serial connection of thin layer solar cells. The invention provides a structuring method for creating a reliable and effective connections, preventing short-circuits and enlarging usable solar cell surfaces. The solar cells comprise a substrate, a back contact layer, an absorber layer, a buffer layer, and a transparent front contact layer. Each solar cell is subdivided by three trenches A, B, C to create a plurality of adjacent cell segments. Trenches A and B extend down to the back contact layer, trench C extends down to the substrate. Trench C is filled with electrically insulating paste and trench B is filled with electrically conducting paste. The electrically conducting paste also covers trench C. The adjacent cell segments are electrically connected. Trench A is then created and filled with electrically insulating paste.
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