Mono-silicon solar cells
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United States of America Patent
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Jan 8, 2013
Grant Date -
Feb 4, 2010
app pub date -
Oct 20, 2008
filing date -
Oct 18, 2007
priority date (Note) -
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Abstract
A method for producing a backside contact of a single p-n junction photovoltaic solar cell is provided. The method includes the steps of: providing a p-type substrate having a back surface; providing a plurality of p+ diffusion regions at the back surface of the substrate; providing a plurality of n+ diffusion regions at the back surface of the substrate in an alternate pattern with the p+ diffusion regions; providing an oxide layer over the p+ and n+ regions; providing an insulating layer over the back surface of the substrate; providing at least one first metal contact at the back surface for the p+ diffusion regions; and providing at least one second metal contact at the back surface for the n+ diffusion regions.
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