Solar cell, concentrating solar power generation module, concentrating solar power generation unit, method of manufacturing solar cell, and solar cell manufacturing apparatus

A method of manufacturing a solar cell comprising:

• a solar cell element that converts sunlight into electricity;
• a receiver substrate on which the solar cell element is placed;
• and a covering portion that covers the solar cell element,
• wherein a covering portion forming step of forming the covering portion comprises:
• a sealing frame forming step of forming a sealing frame having an opening on the receiver substrate such that the sealing frame surrounds the periphery of the solar cell element;
• a covering plate bonding step of bonding a light-transmitting covering plate that covers the solar cell element to the sealing frame;
• and
• a resin sealing step of filling a sealing region defined by the sealing frame and the light-transmitting covering plate with sealing resin through the opening to form a resin sealing portion.

A solar cell comprising:

• a solar cell element including a substrate electrode and a surface electrode;
• and a receiver substrate on which the solar cell element is placed,
• wherein the receiver substrate includes a base, an intermediate insulating layer laminated on the base, and a connection pattern layer laminated on the intermediate insulating layer, and
• the substrate electrode and the surface electrode are each connected to the connection pattern layer.

A solar cell comprising:

• a solar cell element that converts sunlight concentrated by a concentrating lens into electricity;
• a receiver substrate on which the solar cell element is placed;
• a resin sealing portion that seals the solar cell element with resin;
• and a light-transmitting covering plate that covers a concentrating lens side face of the resin sealing portion,
• wherein the solar cell comprises a reflecting portion that prevents irradiation of the receiver substrate from sunlight on a face facing the resin sealing portion of the light-transmitting covering plate.

A method of manufacturing a solar cell comprising:

• a solar cell element that converts sunlight concentrated by a concentrating lens into electricity;
• a receiver substrate on which the solar cell element is placed;
• a resin sealing portion that seals the solar cell element with resin;
• a light-transmitting covering plate that covers the resin sealing portion;
• and a reflecting portion that is formed on a face facing the resin sealing portion of the light-transmitting covering plate and that prevents irradiation of the receiver substrate from sunlight, the method comprising:
• a light-transmitting covering plate preparation step of preparing the light-transmitting covering plate;
• a metallic film forming step of forming a metallic film on a face facing the resin sealing portion of the light-transmitting covering plate;
• a metallic film heat treatment step of heat treating the metallic film to form the reflecting portion that prevents irradiation of the receiver substrate from sunlight;
• and
• a resin sealing step of forming the resin sealing portion in a state in which the light-transmitting covering plate in which the reflecting portion is formed is disposed facing the solar cell element.

A method of manufacturing a solar cell comprising:

• a solar cell element that converts sunlight concentrated by a concentrating lens into electricity, a receiver substrate on which the solar cell element is placed, a resin sealing portion that seals the solar cell element with resin, a light-transmitting covering plate that covers the resin sealing portion, and a reflecting portion that is formed on a face facing the resin sealing portion of the light-transmitting covering plate and that prevents irradiation of the receiver substrate from sunlight, the method comprising:
• a light-transmitting covering plate preparation step of preparing the light-transmitting covering plate;
• a metallic plate preparation step of preparing a metallic plate having a shape of the reflecting portion;
• a metallic plate bonding step of bonding the metallic plate to the light-transmitting covering plate to form the reflecting portion;
• and
• a resin sealing step of forming the resin sealing portion in a state in which the light-transmitting covering plate in which the reflecting portion is formed is disposed facing the solar cell element.