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1. (WO2017169441) BACK CONTACT SOLAR CELL, SOLAR CELL MODULE AND SOLAR PHOTOVOLTAIC POWER GENERATION SYSTEM

Pub. No.:    WO/2017/169441    International Application No.:    PCT/JP2017/007488
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Tue Feb 28 00:59:59 CET 2017
IPC: H01L 31/0216
H01L 31/048
Applicants: SHARP KABUSHIKI KAISHA
シャープ株式会社
Inventors: HOSHINA, Yutaka
星名 豊
SAWADA, Kohei
澤田 幸平
MATSUBARA, Hiroshi
松原 弘
Title: BACK CONTACT SOLAR CELL, SOLAR CELL MODULE AND SOLAR PHOTOVOLTAIC POWER GENERATION SYSTEM
Abstract:
This back contact solar cell is provided with: an impurity-containing region (2) of a first conductivity type and an impurity-containing region (3) of a second conductivity type, which are provided in a first surface (1b) of a semiconductor substrate (1) of the first conductivity type or the second conductivity type; and a silicon nitride film (7) which is provided on a second surface (1a) of the semiconductor substrate (1). The mass ratio of nitrogen in the silicon nitride film (7) is 0.38 or less.