Manufacture of high efficiency solar cells
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United States of America Patent
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May 20, 1986
Issued Date -
N/A
app pub date -
Oct 16, 1984
filing date -
Oct 20, 1983
priority date (Note) -
Expired
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Abstract
A Passivated Emitter Solar Cell (PESC) with reduced surface recombination due to reduced contact area between the top metal contact and the top surface of the cell, and having an open circuit voltage approaching 700 mV and an energy conversion efficiency in excess of 19% is disclosed. The reduced contact area is obtained by a technique which simultaneously defines the lateral geometry of the top metal contact while allowing the top metal contact to be of much larger area than the area of contact to the top surface of the cell. Also disclosed are methods of manufacture of solar cells having an increased open cell voltage obtained by improved passivation of the cell surface obtained by this technique.
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