SOLAR CELL AND MANUFACTURING METHOD THEREOF
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United States of America Patent
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Issued Date -
Jan 19, 2012
app pub date -
Apr 27, 2011
filing date -
Jul 19, 2010
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Abstract
A solar cell includes a base layer including a first conductive type impurity element, an upper surface, and a lower surface opposing the upper surface, an emitter layer disposed on the upper surface of the base layer and including a second conductive type impurity element opposing the first conductive type impurity element, a front electrode connected to the emitter layer, a first passivation layer disposed on the lower surface of the base layer, and a rear electrode disposed on the first passivation layer and connected to the base layer. The first passivation layer includes a silicon nitride group compound, and a refractive index of the silicon nitride group compound is less than about 1.96.
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