TYPE OF FRONT FINGER PASTE FOR N-TYPE SOLAR CELLS AS WELL AS ITS PREPARATION METHODS
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United States of America Patent
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Issued Date -
Jul 28, 2022
app pub date -
Sep 20, 2019
filing date -
Sep 4, 2019
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The present disclosure discloses a type of front finger paste for N-type solar cells. In parts by weight, the raw materials for preparing the paste include 1-5 parts of high-activity glass powder, 1-5 parts of silicon powder, 75-79 parts of aluminum-silicon alloy powder and 15-20 parts of organic component. The front finger paste for N-type solar cells and its preparation method provided by the present disclosure use aluminum paste to replace the aluminum-doped silver paste used in the existing technologies, thus reducing the production cost of N-type solar cells; and the high-activity glass powder contained in the aluminum paste can eliminate the grooving process before printing, thus simplifying the process steps, and it does not damage the passivation layer and can improve the electrical performance of the solar cell.
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