ELECTRO-CONDUCTIVE PASTE COMPRISING AG PARTICLES WITH A MULTIMODAL DIAMETER DISTRIBUTION IN THE PREPARATION OF ELECTRODES IN MWT SOLAR CELLS
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United States of America Patent
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Jun 30, 2016
app pub date -
Jul 9, 2014
filing date -
Jul 9, 2014
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Abstract
The invention relates to an electro-conductive paste comprising Ag particles with a multimodal diameter distribution in the preparation of electrodes in solar cells, particularly in the preparation of electrodes in MWT solar cells, particularly in the preparation of the metal wrap through, or plug, electrode in such solar cells. In particular, the invention relates to a solar cell precursor, a process for preparing a solar cell, a solar cell and a module comprising solar cells. The invention relates to a solar cell precursor at least comprising as precursor parts: i) a wafer with at least one hole with a Si surface; ii) an electro-conductive paste at least comprising as paste constituents: a) metallic particles; b) an inorganic reaction system; c) an organic vehicle; and d) an additive; comprised by the hole, wherein the metallic particles have a multimodal distribution of particle diameter.
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