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1. (WO2018061769) SOLAR CELL AND METHOD FOR PRODUCING SOLAR CELL

Pub. No.:    WO/2018/061769    International Application No.:    PCT/JP2017/033017
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Thu Sep 14 01:59:59 CEST 2017
IPC: H01L 31/0747
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO.,LTD.
パナソニックIPマネジメント株式会社
Inventors: FUJITA Kazunori
藤田 和範
MASUKO Keiichiro
益子 慶一郎
YANO Ayumu
矢野 歩
Title: SOLAR CELL AND METHOD FOR PRODUCING SOLAR CELL
Abstract:
A method for producing a solar cell (10) according to one embodiment of the present invention comprises: a step wherein a passivation layer (12z) is formed on one main surface of a crystalline silicon wafer (11z); a step wherein a substantially intrinsic i-type silicon layer (13z) is formed on the passivation layer (12z); a step wherein an n-type dopant is thermally diffused into the passivation layer (12z), the i-type silicon layer (13z) and the crystalline silicon wafer (11z), thereby forming an n+ layer (20) in main surfaces of the wafer and the vicinities thereof and transforming the i-type silicon layer (13z) into an n-type crystalline silicon layer (13); and a step wherein a p-type amorphous silicon layer (17) is formed on the other main surface of the crystalline silicon wafer (11z) (an n-type crystalline silicon wafer (11)) on which the n+ layer (20) has been formed.