Photovoltaic Cell Comprising A Thin Lamina Having A Rear Junction And Method Of Making
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United States of America Patent
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Nov 29, 2012
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Aug 10, 2008
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Abstract
Fabrication of a photovoltaic cell comprising a thin semiconductor lamina may require additional processing after the semiconductor lamina is bonded to a receiver. To minimize high-temperature steps after bonding, the p-n junction is formed at the back of the cell, at the bonded surface. In some embodiments, the front surface of the semiconductor lamina is not doped or is locally doped using low-temperature methods. The base resistivity of the photovoltaic cell may be reduced, allowing a front surface field to be reduced or omitted.
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