Photovoltaic conversion device, photovoltaic module, and solar power generation system

A photovoltaic conversion device comprising:

• a semiconductor substrate of a first conductivity type;
• a first amorphous semiconductor section on one of faces of the semiconductor substrate, the first amorphous semiconductor section including at least one first amorphous semiconductor strip of the first conductivity type;
• a second amorphous semiconductor section on the face, the second amorphous semiconductor section including at least one second amorphous semiconductor strip of a second conductivity type that differs from the first conductivity type, the first and second amorphous semiconductor strips being arranged alternately as viewed along an in-plane direction of the semiconductor substrate;
• a plurality of first electrodes arranged spaced apart from each other on the first amorphous semiconductor section;
• and
• a plurality of second electrodes arranged spaced apart from each other on the second amorphous semiconductor section,
• wherein
• the first and second amorphous semiconductor strips each have at least one reduced-thickness region where that first or second amorphous semiconductor strip has a reduced thickness, the reduced-thickness region being provided across the first and second amorphous semiconductor strips in a width direction thereof, and
• the reduced-thickness region has no electrodes formed in a segment thereof where the reduced-thickness region has a positive curvature with respect to a length direction of the first and second amorphous semiconductor strips.