US 12,342,632 B2
Solar cell, multi-junction type solar cell, solar cell module, and solar cell power generation system
Atsushi Wada, Kanagawa (JP); Sara Yoshio, Kanagawa (JP); Soichiro Shibasaki, Tokyo (JP); Yuya Honishi, Saitama (JP); Naoyuki Nakagawa, Tokyo (JP); Yukitami Mizuno, Tokyo (JP); Mutsuki Yamazaki, Kanagawa (JP); Yasutaka Nishida, Tokyo (JP); and Kazushige Yamamoto, Kanagawa (JP)
Assigned to KABUSHIKI 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, Kanagawa (JP)
Filed on Aug. 11, 2023, as Appl. No. 18/448,194.
Application 18/448,194 is a continuation of application No. PCT/JP2021/041106, filed on Nov. 9, 2021.
Prior Publication US 2023/0387338 A1, Nov. 30, 2023
Int. Cl. H10F 19/35 (2025.01); H10F 10/161 (2025.01)
CPC H10F 19/35 (2025.01) [H10F 10/161 (2025.01)] 12 Claims
OG exemplary drawing
 
1. A solar cell, comprising:
a substrate; and
a first cell and a second cell on the substrate,
the first cell comprising
a first conductive layer which is a conductive film,
a first photoelectric conversion layer which is a photoelectric conversion film,
a first compound layer which is a compound film, and
a first opposing conductive layer which is a conductive film,
the second cell comprising
a second conductive layer which is a conductive film,
a second photoelectric conversion layer which is a photoelectric conversion film,
a second compound layer which is a compound film, and
a second opposing conductive layer which is a conductive film electrically connected to the first conductive layer,
wherein
a groove is provided between a part of the second photoelectric conversion layer and another part of the second photoelectric conversion layer,
the first photoelectric conversion layer and the other part of the second photoelectric conversion layer are on the first conductive layer,
the groove has a surface on a side of the part of the second photoelectric conversion layer, a surface on a side of the other part of the second photoelectric conversion layer, and a surface on a side of the substrate,
a portion of the second compound layer and a portion of the second opposing conductive layer are formed in this order on the surface on the side of the part of the second photoelectric conversion layer,
at least a portion of the part of the second compound layer is between the first conductive layer and the second conductive layer,
another portion of the second opposing conductive layer on the surface on the side of the other part of the second photoelectric conversion layer and the part of the second opposing conductive layer are separated,
a further portion of the second opposing conductive layer on the surface on the substrate side is between the other part of the second opposing conductive layer and the part of the second opposing conductive layer, and
the further portion of the second opposing conductive layer electrically connects the other part of the second opposing conductive layer and the part of the second opposing conductive layer.