Title:
SOLAR CELL AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2013/186945
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a solar cell, which suppresses generation of defects, and which has high photoelectric conversion efficiency. This solar cell is provided with: a silicon substrate formed of a single crystal or the like of an n-type single crystal silicon substrate (1) having pyramid-shaped recessed and projecting sections (P) formed thereon; and an amorphous or fine crystal semiconductor layer, which is film-formed on the single crystal silicon substrate. Flat portions (F) are formed at the valley parts of the pyramid-shaped recessed and projecting sections (P) that are provided on the surface of the single crystal silicon substrate. With such configuration, a sharp angle of 70-85° of the recessed sections formed of substantially a (111) plane can be widened to 115-135°. Consequently, an atomic step-shaped shape change due to a rounded shape can be eliminated, and epitaxial growing and defects in the amorphous or fine crystal semiconductor layer can be suppressed.
Inventors:
NISHIYAMA AYA (JP)
FUCHIGAMI HIROYUKI (JP)
TOKIOKA HIDETADA (JP)
FUCHIGAMI HIROYUKI (JP)
TOKIOKA HIDETADA (JP)
Application Number:
PCT/JP2012/076642
Publication Date:
December 19, 2013
Filing Date:
October 15, 2012
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
NISHIYAMA AYA (JP)
FUCHIGAMI HIROYUKI (JP)
TOKIOKA HIDETADA (JP)
NISHIYAMA AYA (JP)
FUCHIGAMI HIROYUKI (JP)
TOKIOKA HIDETADA (JP)
International Classes:
H01L31/04
Domestic Patent References:
| WO1998043304A1 | 1998-10-01 |
Foreign References:
| JP2010077010A | 2010-04-08 | |||
| JP2000150937A | 2000-05-30 | |||
| JP2011115987A | 2011-06-16 |
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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