Solar cell module

Patent metadata

Field	Value
Publication number	US-2016359064-A1
Application number	US-201615239327-A
Country	US
Kind code	A1
Filing date	Aug 17, 2016
Priority date	Feb 26, 2014
Publication date	Dec 8, 2016
Grant date	—

Abstract

A solar cell module having: a plurality of solar cells; a first protective member provided on the light-receiving surface side of the solar cells; a second protective member provided on the reverse surface side of the solar cells; a sealing layer for sealing the solar cells, the sealing layer being provided between the protective members; and a wavelength conversion substance for absorbing light of a specific wavelength and converting the light into light of a longer wavelength. The wavelength conversion substance is contained in at least a gap region, corresponding to the gap between the solar cells, of a reverse-surface-side region located on the side of the sealing layer nearer to the second protective member than the solar cells. The concentration of the wavelength conversion substance is higher in the gap region than in the region sandwiched by the reverse surface of the solar cells and the second protective member.

First claim

1 . A solar cell module comprising:
a plurality of solar cells; a first protective member provided on a light-receiving surface side of the solar cells; a second protective member provided on a rear-surface side of the solar cells; an encapsulant layer provided between the respective protective members and sealing the solar cells; and a wavelength conversion material absorbing a light of a specific wavelength and converting the light into a light of a longer wavelength,
wherein
the wavelength conversion material is contained in at least a gap region which is in a rear-surface side area in the encapsulant layer located closer to a side of the second protective material than the solar cell and which corresponds to a gap between the solar cells, and
a concentration of the wavelength conversion material is higher in the gap region than in a region sandwiched by the rear surface of the solar cell and the second protective member.

2 . The solar cell module according to claim 1 , wherein
the wavelength conversion material includes a first wavelength conversion material, and a second wavelength conversion material which absorbs and wavelength-converts a light of a longer wavelength than the first wavelength conversion material, a concentration of the first wavelength conversion material is higher, in a light-receiving-surface side area in the encapsulant layer located closer to a side of the first protective member than the solar cell, than a concentration of the second wavelength conversion material, and the concentration of the second wavelength conversion material is higher in the rear-surface side area than the concentration of the first wavelength conversion material.

3 . The solar cell module according to claim 1 , wherein
the wavelength conversion material performs wavelength-conversion into light of a wavelength closer to reflected light from the solar cell than the light of a specific wavelength.

4 . The solar cell module according to claim 1 , wherein
the solar cell includes a heterojunction layer, the wavelength conversion material absorbs and wavelength-converts light of a wavelength having an energy equal to or more than a bandgap of the heterojunction layer.

5 . The solar cell module according to claim 1 , wherein
a refractive index of an area containing the wavelength conversion material in the encapsulant layer is higher than a refractive index of an outermost layer of the first protective member.

6 . The solar cell module according to claim 1 , further comprising a reflector which is provided to cover a lateral face of a solar cell panel and reflects light wavelength-converted by the wavelength conversion material, the solar cell panel being constituted by the solar cell, the first protective member, the second protective member, and the encapsulant layer.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Ishiguro Tasuku
• Yoshimine Yukihiro
• Irikawa Junpei

Classifications

• H02S30/10

  Frame structures · CPC title

• Y02E10/52

  PV systems with concentrators · CPC title

• H01L31/055

  Electricity · mapped topic

• H01L31/048 Primary

  Electricity · mapped topic

• H01L31/0547

  Electricity · mapped topic