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Title:
HIGHLY EFFICIENT REAR-SURFACE ELECTRODE TYPE SOLAR CELL, SOLAR CELL MODULE, AND SOLAR POWER GENERATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/109849
Kind Code:
A1
Abstract:
Provided is a rear-surface electrode type solar cell having an impurity diffusion layer in which impurities of a second conductivity type are diffused and which is formed on the rear surface, which is a non-light-receiving surface, of a semiconductor substrate of a first conductivity type, the rear-surface electrode type solar cell being provided with an electrode connecting to the impurity diffusion layer, wherein the surface concentration of the impurities in the impurity diffusion layer is 5×1017 to 5×1019 atms/cm3 inclusive, and the diffusion depth of the impurities in the impurity diffusion layer is 1 to 2.9 µm inclusive from the surface of the substrate rear surface. Due to this configuration, it is possible to provide a highly efficient rear-surface electrode type solar cell that can be manufactured at a low cost and with a simple method.

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Inventors:
MITTA RYO (JP)
HASHIGAMI HIROSHI (JP)
WATABE TAKENORI (JP)
OHTSUKA HIROYUKI (JP)
Application Number:
PCT/JP2016/087128
Publication Date:
June 21, 2018
Filing Date:
December 13, 2016
Export Citation:
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Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
H01L31/18
Domestic Patent References:
WO2013125036A12013-08-29
WO2015151288A12015-10-08
WO2011111192A12011-09-15
Foreign References:
JP2005322780A2005-11-17
JPH10117008A1998-05-06
JP2001284616A2001-10-12
JP2011507246A2011-03-03
JP2012521662A2012-09-13
JP2016051767A2016-04-11
JP2015171993A2015-10-01
JP2011124476A2011-06-23
JP2012521642A2012-09-13
JP2003168807A2003-06-13
JP2011049514A2011-03-10
Other References:
See also references of EP 3361515A4
Attorney, Agent or Firm:
ORISAKA Shigeki (JP)
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