US 11,901,474 B2
Solar cell, multi-junction solar cell, solar cell module, and photovoltaic power generation system
Soichiro Shibasaki, Tokyo (JP); Yuya Honishi, Saitama Saitama (JP); Naoyuki Nakagawa, Tokyo (JP); Mutsuki Yamazaki, Yokohama Kanagawa (JP); Yukitami Mizuno, Tokyo (JP); Yasutaka Nishida, Tokyo (JP); and Kazushige Yamamoto, Yokohama Kanagawa (JP)
Assigned to KABUSAIRES KAISHA TOSHIBA, Tokyo (JP); and TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, Kawasaki (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP); and TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, Kawasaki (JP)
Filed on Sep. 7, 2022, as Appl. No. 17/938,990.
Application 17/938,990 is a continuation of application No. PCT/JP2020/038402, filed on Oct. 9, 2020.
Prior Publication US 2023/0006087 A1, Jan. 5, 2023
Int. Cl. H01L 31/072 (2012.01); H01L 31/0336 (2006.01); H01L 31/05 (2014.01)
CPC H01L 31/072 (2013.01) [H01L 31/0336 (2013.01); H01L 31/0504 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A solar cell comprising:
a p-electrode;
an n-electrode;
a p-type light-absorbing layer located between the p-electrode and the n-electrode and mainly containing a cuprous oxide; and
a first n-type layer which is located between the p-type light-absorbing layer and the n-electrode, which mainly contains a compound represented by Gax1M1x2M2x3M3x4M4x5Ox6, the M1 being Hf or/and Zr, the M2 being one or more selected from the group consisting of In, Ti, and Zn, the M3 being Al or/and B, the M4 is one or more selected from the group consisting of Sn, Si, and Ge, the x1, the x2, and when a sum of the x1, the x2, the x3, the x4, and the x5 is 2, the x6 being 3.0 or more and 3.8 or less.