SOLAR CELL AND SOLAR CELL MANUFACTURING METHOD

WIPO Patent Application WO/2017/037803

A1

A solar cell (1) is provided with: an n-type semiconductor substrate (2) having a pn junction; and a rear surface-side impurity diffusion layer (11), which is formed on the light receiving surface of the semiconductor substrate (2) or in a rear surface-side surface layer on the reverse side of the light receiving surface, and which has a rear surface-side high-concentration impurity diffusion layer (11a), which contains an n-type or p-type impurity element at a first concentration, and a rear surface-side low-concentration impurity diffusion layer (11b), which contains, at a second concentration that is lower than the first concentration, an impurity element having a conductivity type that is same as that of the rear surface-side high-concentration impurity diffusion layer (11a). The solar cell (1) is also provided with: rear surface first electrodes (13), which are formed at a plurality of areas of the rear surface of the semiconductor substrate (2), and which are electrically connected to the rear surface-side high-concentration impurity diffusion layer (11a); and rear surface second electrodes (14) each of which electrically connects the rear surface first electrodes (13) to each other in a state of being separated from the rear surface-side impurity diffusion layer (11).

KOHATA HAYATO (JP)

PCT/JP2015/074526

March 09, 2017

August 28, 2015

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MITSUBISHI ELECTRIC CORP (JP)

H01L31/068

WO2014098016A1	2014-06-26
WO2006117975A1	2006-11-09
WO2009157079A1	2009-12-30
WO2013009373A1	2013-01-17

JP2012054457A

2012-03-15

TAKAMURA, Jun (JP)

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