- Patent Title: Solar cell and method of manufacturing same, and solar cell module
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Application No.: US14654453Application Date: 2013-10-25
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Publication No.: US09680037B2Publication Date: 2017-06-13
- Inventor: Toshihiko Uto , Daisuke Adachi
- Applicant: KANEKA CORPORATION
- Applicant Address: JP Osaka-shi, Osaka
- Assignee: KANEKA CORPORATION
- Current Assignee: KANEKA CORPORATION
- Current Assignee Address: JP Osaka-shi, Osaka
- Agency: Alleman Hall Creasman & Tuttle LLP
- Priority: JP2012-277528 20121220
- International Application: PCT/JP2013/079014 WO 20131025
- International Announcement: WO2014/097741 WO 20140626
- Main IPC: H01L31/0224
- IPC: H01L31/0224 ; H01L31/0465 ; H01L31/0747 ; H01L31/18 ; H01L31/20

Abstract:
A solar cell of the present invention includes a collecting electrode on one main surface of a photoelectric conversion section. The collecting electrode includes first and second electroconductive layers in this order from the photoelectric conversion section side, and an insulating layer between the first and second electroconductive layers, the insulating layer having an opening section formed therein. The first electroconductive layer is covered with the insulating layer, contains a low-melting-point material, and is conductively connected with a part of the second electroconductive layer via the opening section. The surface roughness of the second electroconductive layer is preferably 1.0 μm to 10.0 μm. The second electroconductive layer is preferably formed by a plating method. In order to conductively connect the first and second electroconductive layers, annealing of the first electroconductive layer by heating is preferably performed prior to forming the second electroconductive layer.
Public/Granted literature
- US20150372169A1 Solar Cell and Method of Manufacturing Same, and Solar Cell Module Public/Granted day:2015-12-24
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