Solar cell module and method for producing same

A method for producing a solar cell module including a solar cell having a photoelectric conversion section and a collector electrode, and a wiring member connecting the solar cell to an external circuit or another solar cell,

• wherein the solar cell includes a finger electrode portion extending in a predetermined direction, the finger electrode portion being a region in which the collector electrode is disposed, in plan view of the photoelectric conversion section,
• wherein the finger electrode portion has a stacked structure in which a first conductive layer and a second conductive layer are sequentially stacked on an outer side of the photoelectric conversion section with respect to the photoelectric conversion section,
• wherein the second conductive layer is a layer different from the first conductive layer,
• wherein the electrical resistance of the second conductive layer is equal to or lower than the electrical resistance of the first conductive layer,
• wherein the wiring member is located on an outer side of the first conductive layer with respect to the photoelectric conversion section and arranged to intersect the finger electrode portion or an extension of the finger electrode portion, and
• wherein an intersecting region between the finger electrode portion of the solar cell or the extension of the finger electrode portion thereof and the wiring member has a lamination structure of the following (1) or (2):
• (1) a lamination structure in which the wiring member is in direct contact with the first conductive layer, and
• (2) a lamination structure in which the first conductive layer and the wiring member are in contact with each other through an adhesive layer that differs from the second conductive layer interposed therebetween, the method comprising, with an outer direction defined with respect to the photoelectric conversion section:
• a first conductive layer forming step of forming the first conductive layer on the outer side of the photoelectric conversion section;
• a wiring member bonding step of connecting the wiring member to the outer side of the first conductive layer;
• and
• a plating step of forming the second conductive layer on the outer side of the first conductive layer by a plating method, in this order.

A method for producing a solar cell module including a solar cell having a photoelectric conversion section and a collector electrode, and a wiring member connecting the solar cell to an external circuit or another solar cell,

• wherein the solar cell includes a finger electrode portion extending in a predetermined direction, the finger electrode portion being a region in which the collector electrode is disposed, in plan view of the photoelectric conversion section,
• wherein the finger electrode portion has a stacked structure in which a first conductive layer and a second conductive layer are sequentially stacked on an outer side of the photoelectric conversion section with respect to the photoelectric conversion section,
• wherein the second conductive layer is a layer different from the first conductive layer,
• wherein the electrical resistance of the second conductive layer is equal to or lower than the electrical resistance of the first conductive layer,
• wherein the wiring member is located on an outer side of the first conductive layer with respect to the photoelectric conversion section and arranged to intersect the finger electrode portion or an extension of the finger electrode portion,
• wherein an intersecting region between the finger electrode portion of the solar cell or the extension of the finger electrode portion thereof and the wiring member has a lamination structure of the following (1) or (2):
• (1) a lamination structure in which the wiring member is in direct contact with the first conductive layer, and
• (2) a lamination structure in which the first conductive layer and the wiring member are in contact with each other through an adhesive layer that differs from the second conductive layer interposed therebetween,
• wherein the finger electrode portion includes an insulation layer interposed between the first conductive layer and the second conductive layer,
• wherein the insulation layer has an opening, and
• wherein the first conductive layer and the second conductive layer are electrically continuous with each other through the opening, the method comprising, with an outer direction defined with respect to the photoelectric conversion section:
• a first conductive layer forming step of forming the first conductive layer on the outer side of the photoelectric conversion section;
• a wiring member bonding step of connecting the wiring member to the outer side of the first conductive layer;
• an insulation layer forming step of forming the insulation layer on the outer side of the first conductive layer, and
• a plating step of forming the second conductive layer electrically continuous with the first conductive layer through the opening formed on the insulation layer by a plating method.