Photovoltaic cell comprising contact regions doped through a lamina
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United States of America Patent
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Jan 21, 2014
Grant Date -
Jun 24, 2010
app pub date -
Dec 18, 2008
filing date -
Dec 18, 2008
priority date (Note) -
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Abstract
In aspects of the present invention, a lamina is formed having opposing first and second surfaces. Heavily doped contact regions extend from the first surface to the second surface. Generally the lamina is formed by affixing a semiconductor donor body to a receiver element, then cleaving the lamina from the semiconductor donor body wherein the lamina remains affixed to the receiver element. In the present invention, the heavily doped contact regions are formed by doping the semiconductor donor body before cleaving of the lamina. A photovoltaic cell comprising the lamina is then fabricated. By forming the heavily doped contact regions before bonding to the receiver element and cleaving, post-bonding high-temperature steps can be avoided, which may be advantageous.
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