INTERDIGITATED BACK CONTACT PHOTOVOLTAIC CELL WITH FLOATING FRONT SURFACE EMITTER REGIONS
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United States of America Patent
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Oct 9, 2014
app pub date -
Aug 31, 2012
filing date -
Sep 2, 2011
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Abstract
A photo-voltaic cell with semiconductor substrate having a first conductivity type has a first pattern of base and emitter surface regions on the back surface, the base and emitter surface regions being coupled to first and second output terminals respectively. A second pattern of first and second further surface regions on the front surface, electrically floating with respect to the first and second output terminals. The first and second further surface regions have the first and second conductivity type respectively. The first and second further surface regions at least partly overlap the emitter and base regions respectively, when seen in a projection along a direction perpendicular to the first surface.
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