Multi-junction solar cell

A multi-junction solar cell, comprising:

• a first solar cell including a first photoelectric conversion element;
• a second solar cell connected in parallel with the first solar cell, the second solar cell including a plurality of second photoelectric conversion elements connected in series with each other;
• an insulating layer provided between the first solar cell and the second solar cell;
• and
• an interconnect portion,
• one of the second photoelectric conversion elements being closest to an other one of the second photoelectric conversion elements among the second photoelectric conversion elements,
• a direction from the one of the second photoelectric conversion elements toward the other one of the second photoelectric conversion elements being along a first direction,
• the one of the second photoelectric conversion elements including
• a first region of a first conductivity type,
• a second region of a second conductivity type,
• a first electrode connected with the first region, the first electrode including first finger parts extending along a second direction crossing the first direction, and
• a second electrode connected with the second region, the second electrode including second finger parts and a first part connected with the second finger parts, the second finger parts extending along the second direction, one of the second finger parts being between one of the first finger parts and an other of the first finger parts, the other of the first finger parts being between the one of the second finger parts and an other of the second finger parts, the first part being provided around the first electrode in a plane including the first direction and the second direction,
• the other one of the second photoelectric conversion elements including
• a third region of the first conductivity type,
• a fourth region of the second conductivity type,
• a third electrode connected with the third region, the third electrode including third finger electrodes extending along the second direction, and
• a fourth electrode connected with the fourth region, the fourth electrode including fourth finger parts and a second part connected with the fourth finger parts, the fourth finger parts extending along the second direction, one of the fourth finger parts being between one of the third finger parts and an other of the third finger parts, the other of the third finger parts being between the one of the fourth finger parts and an other of the fourth finger parts, the second part being provided around the third electrode in the plane,
• the interconnect portion connecting the one of the first finger parts with the second parts;
• a part of the interconnect portion overlaps at least a part of the first part in a direction crossing the plane.