METHOD FOR PRODUCING AN EMITTER ELECTRODE FOR A CRYSTALLINE SILICON SOLAR CELL AND CORRESPONDING SILICON SOLAR CELL
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United States of America Patent
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app pub date -
Feb 10, 2012
filing date -
Aug 13, 2009
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Abandoned
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Abstract
In a method for producing a front-side emitter electrode as front contact for a silicon solar cell on a silicon wafer, a depression is produced in the front side of said silicon wafer. A front-side n-doped silicon layer and an antireflection layer are then produced. A paste is then introduced into the depression, said paste containing electrically conductive metal particles and etching glass frit. Said paste, as a result of momentary heating, etches through the antireflection layer to the n-doped silicon layer making electrical contact with the latter. Afterwards, electrically conductive front contact metal is galvanically attached as front contact onto the heat-treated paste in the depression.
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