Title:
SOLAR CELL AND METHOD OF PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2010/125728
Kind Code:
A1
Abstract:
Disclosed is a solar cell with high photoelectric conversion efficiency, comprising a semiconductor substrate, a front surface textured section formed on the main surface of the light-receiving surface side of the semiconductor substrate, a semiconductor layer having a conductivity type and formed along the front surface textured section, and an anti reflection film formed on the light-receiving surface side of the semiconductor layer, wherein a passivation film is formed on the main surface of the back surface side of the semiconductor substrate, at least one opening section is provided in the passivation film, and a first back surface electrode, which overlaps all portions on the passivation film in the range occupied by the opening section and covers the opening section, and a second back surface electrode, which overlaps all portions on the passivation film in the range occupied by the first back surface electrode and covers the first back surface electrode, are formed, whereby a partial back surface electrode, which does not suffer from electrode peeling or high resistance of an electrode conductor, is provided on the passivation film. Also disclosed is a method of producing the same.
Inventors:
FUJIKAWA MASAHIRO (JP)
MATSUNO SHIGERU (JP)
MATSUNO SHIGERU (JP)
Application Number:
PCT/JP2010/001394
Publication Date:
November 04, 2010
Filing Date:
March 02, 2010
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
FUJIKAWA MASAHIRO (JP)
MATSUNO SHIGERU (JP)
FUJIKAWA MASAHIRO (JP)
MATSUNO SHIGERU (JP)
International Classes:
H01L31/04
Foreign References:
| JP2007214372A | 2007-08-23 | |||
| JP2008294209A | 2008-12-04 | |||
| JP2002246625A | 2002-08-30 |
Attorney, Agent or Firm:
TAKAHASHI, Shogo et al. (JP)
Shogo Takahashi (JP)
Shogo Takahashi (JP)
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