ELECTRICALLY CONDUCTIVE ADHESIVE FOR CONNECTING CONDUCTORS TO SOLAR CELL CONTACTS
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United States of America Patent
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Nov 26, 2015
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Jan 12, 2015
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Abstract
An electrically conductive composition as an electrically conductive adhesive for mechanically and electrically connecting at least one contact of a solar cell with an electrical conductor is provided. The contact is selected from emitter contacts and collector contacts and the electrically conductive composition contains (A) 2 to 35 vol.-% silver particles having an average particle size of 1 to 25 μm and exhibiting an aspect ratio in the range of 5 to 30:1, (B) 10 to 63 vol.-% non-metallic particles having an average particle size of 1 to 25 um and exhibiting an aspect ratio in the range of 1 to 3:1, (C) 30 to 80 vol.-% of a curable resin system, and (D) 0 to 10 vol.-% of at least one additive, in which the sum of the vol.-% of particles (A) and (B) totals 25 to 65 vol.-%.
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