Solar cell module and method for manufacturing the same
A solar cell module includes: a solar cell having a front surface and a back surface; a front surface side encapsulant disposed on a front surface side of the solar cell, the front surface side encapsulant including a transparent resin sheet; a light reflector protruding from an end portion of the solar cell, the light reflector including a light reflection layer that reflects incident light, and a substrate layer that is disposed on the light reflection layer on a light incident side; and an ultraviolet absorber disposed closer to the light incident side than the light reflection layer, the light incident side being a back surface side of the front surface side encapsulant.
1. A solar cell module, comprising:
a solar cell having a front surface and a back surface;
a front surface side encapsulant disposed on a front surface side of the solar cell, the front surface side encapsulant including a transparent resin sheet;
a light reflector protruding from an end portion of the solar cell, the light reflector including a light reflection layer that reflects incident light, and a substrate layer that is disposed on the light reflection layer on a light incident side, the light incident side being a back surface side of the front surface side encapsulant;
a first ultraviolet absorber disposed closer to the light incident side than the light reflection layer; and
a first ultraviolet absorbing layer disposed between the front surface side encapsulant and the substrate layer wherein:
the first ultraviolet absorbing layer bonds the light reflector to the end portion of the solar cell and includes the first ultraviolet absorber, and
a transmittance for light having a wavelength of 360 nm in the first ultraviolet absorbing layer is at least 0.02 times and at most 0.5 times a transmittance for the light having the wavelength of 360 nm in the substrate layer.
2. The solar cell module according to claim 1 ,
wherein the substrate layer includes a second ultraviolet absorber.
3. The solar cell module according to claim 1 , further comprising:
a plurality of solar cells; and
a second ultraviolet absorbing layer covering a space between two adjacent solar cells, the second ultraviolet absorbing layer including a second ultraviolet absorber.
4. The solar cell module according to claim 1 ,
wherein the light reflector is disposed on a back surface side of the solar cell.
5. A solar cell module, comprising:
a solar cell having a front surface and a back surface;
a front surface side encapsulant disposed on a front surface side of the solar cell, the front surface side encapsulant including a transparent resin sheet;
a light reflector protruding from an end portion of the solar cell, the light reflector including a light reflection layer that reflects incident light, and a substrate layer that is disposed on the light reflection layer on a light incident side, the light incident side being a back surface side of the front surface side encapsulant;
a first ultraviolet absorber disposed closer to the light incident side than the light reflection layer; and
a first ultraviolet absorbing layer disposed between the front surface side encapsulant and the substrate layer wherein:
the first ultraviolet absorbing layer bonds the light reflector to the end portion of the solar cell,
the front surface side encapsulant includes the first ultraviolet absorber, and
a transmittance for light having a wavelength of 360 nm in the first ultraviolet absorbing layer is at most 1.2 times a transmittance for the light having the wavelength of 360 nm in the front surface side encapsulant.
6. The solar cell module according to claim 1 ,
wherein the first ultraviolet absorber is a high-molecular-weight ultraviolet absorber having a molecular weight of more than 1000.
7. The solar cell module according to claim 5 ,
wherein the substrate layer includes a second ultraviolet absorber.
8. The solar cell module according to claim 5 , further comprising:
a plurality of solar cells; and
a second ultraviolet absorbing layer covering a space between two adjacent solar cells, the second ultraviolet absorbing layer including a second ultraviolet absorber.
9. The solar cell module according to claim 5 ,
wherein the light reflector is disposed on a back surface side of the solar cell.
10. The solar cell module according to claim 5 ,
wherein the first ultraviolet absorber is a high-molecular-weight ultraviolet absorber having a molecular weight of more than 1000.
11. The solar cell module according to claim 2 , wherein the second ultraviolet absorber is a high-molecular-weight ultraviolet absorber having a molecular weight of more than 1000.
12. The solar cell module according to claim 3 , wherein the second ultraviolet absorber is a high-molecular-weight ultraviolet absorber having a molecular weight of more than 1000.
13. The solar cell module according to claim 7 , wherein the second ultraviolet absorber is a high-molecular-weight ultraviolet absorber having a molecular weight of more than 1000.
14. The solar cell module according to claim 8 , wherein the second ultraviolet absorber is a high-molecular-weight ultraviolet absorber having a molecular weight of more than 1000.