COMPOSITION FOR FORMING ELECTRODE OF SOLAR CELL AND ELECTRODE FORMED THEREFROM
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United States of America Patent
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Jan 7, 2016
app pub date -
Feb 4, 2014
filing date -
Jun 5, 2013
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Disclosed herein is a composition for solar cell electrodes. The composition includes a silver powder; a bismuth oxide-tellurium oxide-tungsten oxide-based glass frit; and an organic vehicle, wherein the glass frit includes about 40% by weight (wt %) to about 60 wt % of bismuth oxide as a first metal oxide; about 0.25 wt % to about 15 wt % of tellurium oxide as a second metal oxide; about 10 wt % to about 20 wt % of tungsten oxide as a third metal oxide; and about 15 wt % to about 25 wt % of a fourth metal oxide different from the first, second, and third metal oxides. Solar cell electrodes formed of the composition have excellent adhesive strength with respect to a ribbon while minimizing serial resistance (Rs), thereby providing high conversion efficiency.
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