Method for manufacturing a solar cell and a solar cell manufactured according to this method
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United States of America Patent
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Feb 24, 2015
Grant Date -
May 9, 2013
app pub date -
Feb 21, 2011
filing date -
Apr 20, 2010
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Abstract
A method for manufacturing a solar cell from a p-doped or n-doped silicon substrate having a first main surface used as an incident-light side and a second main surface used as a back side includes: depositing a thin layer onto the second main surface; depositing a dielectric, glass-forming paste onto the second main surface and drying it, in order to cover the thin layer; heating and/or sintering the paste on the second main surface at temperatures greater than app. 577° C., to produce an aluminum dopant layer in the second main surface; and removing the glass layer formed during the heating and/or sintering, as well as an aluminum-silicon eutectic layer formed during the heating and/or sintering, from the second main surface.
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