Solar cell, concentrator photovoltaic unit, concentrator photovoltaic module, and method for producing concentrator photovoltaic module

A method for producing a concentrator photovoltaic module including:

• a plurality of solar cells provided in a form of an array;
• and a concentrating member in which first plurality of main condenser lenses each concentrating sunlight incident on an incident surface thereof are formed at positions corresponding to the solar cells on optical axes thereof, wherein
• on a light receiving surface of each solar cell, a plurality of grid electrodes each formed in a linear shape are arrayed, and
• the plurality of grid electrodes include:
• a pair of first grid electrodes formed straight across the light receiving surface, the pair of first grid electrodes being arranged in parallel and arranged on both sides of a center of the light receiving surface, and
• a pair of cross grid electrodes forming a cross portion exhibiting a center-specific geometry caused by the pair of cross grid electrodes crossing each other at a center of the light receiving surface, the pair of cross grid electrodes formed entirely in an area between the pair of first grid electrodes, and
• second grid electrodes, extending in parallel to the pair of first grid electrodes and being arrayed outside the area, the second grid electrodes being all grid electrodes of the plurality of grid electrodes excluding the pair of first grid electrodes and the pair of cross electrodes,
• the method comprising:
• a position information obtaining step of obtaining position information indicating positional relation between a second plurality of main condenser lenses among the first plurality of main condenser lenses and the cross portions corresponding thereto at a time when the second plurality of main condenser lenses and the plurality of solar cells corresponding thereto are seen from the incident surface side of the second plurality of main condenser lenses;
• an adjustment step of performing positional adjustment between the concentrating member and the plurality of solar cells based on the position information;
• and
• a fixing step of fixing the concentrating member having undergone the position adjustment to a housing including the plurality of solar cells, the concentrating member being fixed to obtain the concentrator photovoltaic module.