SOLAR CELL MODULE
Disclosed is a solar cell that includes a sealant, a solar cell within the sealant and having a front surface for exposure to light, a first protective member facing a front surface of the solar cell, a second protective member facing a rear surface of the solar cell, a wiring member on a rear surface of the solar cell and containing Cu. The sealant includes a first sealant layer over the rear surface of the solar cell and having relatively high viscosity, and a second sealant layer disposed between the first sealant layer and the solar cell and having relatively low viscosity. The first sealant layer disposed on a side of second protective member is in contact with a main surface of the wiring member, and the second sealant layer is in contact with a side surface of the wiring member.
1 . A solar cell module comprising:
a sealant;
a solar cell within the sealant and having a front surface for exposure to light;
a first protective member facing a front surface of the solar cell;
a second protective member facing a rear surface of the solar cell;
a wiring member on a rear surface of the solar cell and containing Cu, wherein
the sealant includes:
a first sealant layer over the rear surface of the solar cell and having relatively high viscosity; and
a second sealant layer disposed between the first sealant layer and the solar cell and having relatively low viscosity,
the first sealant layer disposed on a side of second protective member is in contact with a main surface of the wiring member, and
the second sealant layer is in contact with a side surface of the wiring member.
2 . The solar cell module according to claim 1 , wherein a portion of the wiring member is within the second sealant layer.
3 . The solar cell module according to claim 1 , further comprising:
a glass sheet on one side of the sealant; and
a resin sheet on the other side of the sealant, wherein
the first and second sealant layers are between the solar cell and the resin sheet.
4 . The solar cell module according to claim 1 , wherein the first sealant layer contains inorganic filler.
5 . The solar cell module according to claim 1 , wherein
the wiring member includes:
a wiring member body made of copper or a copper alloy; and
a coating layer covering the wiring member body and made of silver or a silver alloy.
6 . The solar cell module according to claim 1 , further comprising a resin adhesive layer bonding the solar cell and the wiring member to each other.
7 . The solar cell module according to claim 1 , wherein the first sealant layer is reflective.
8 . The solar cell module according to claim 1 , wherein the first sealant layer comprises titanium dioxide.
9 . The solar cell module according to claim 1 , wherein the first sealant layer has a viscosity of 10 5.5 Pa to 10 7 Pa and the second sealant layer has a viscosity of 10 5 Pa to 10 6.5 Pa.
10 . The solar cell module according to claim 9 , wherein the first sealant layer has a viscosity of 10 6 Pa to 10 6.5 Pa and the second sealant layer has a viscosity of 10 5.5 Pa to 10 6 .