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Sealing material composition for solar cells, sealing material layer for solar cells, and solar cell module using same

A technology for solar cells and sealing materials, which is applied in the field of sealing material layer compositions, can solve problems such as loss of sealing material layer properties, reduction of cross-linkability, degradation of matrix resin, etc., achieve sufficient cross-linking and curing, prevent oxidation degradation, and inhibit oxidation The effect of deterioration

Inactive Publication Date: 2016-02-10
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding a large amount of antioxidants and photostabilizers in the above method has the problem that the crosslinkability of the matrix resin of the sealing material layer is significantly reduced, and the properties of the sealing material layer are lost.
On the other hand, if the addition amount of organic peroxide etc. is increased in order to maintain the crosslinkability, the organic peroxide and its decomposition products remaining in the sealing material layer after the crosslinking reaction will become the cause of deterioration of the matrix resin. another reason
[0005] In addition, in the case of phenolic antioxidants, which are often used as antioxidants, it has been found that discoloration occurs due to their antioxidant mechanism, and if added in a large amount to the sealing material layer, it may cause yellowing

Method used

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  • Sealing material composition for solar cells, sealing material layer for solar cells, and solar cell module using same
  • Sealing material composition for solar cells, sealing material layer for solar cells, and solar cell module using same
  • Sealing material composition for solar cells, sealing material layer for solar cells, and solar cell module using same

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Embodiment

[0093] Hereinafter, Examples etc. which specifically show the structure and effect of this invention are demonstrated.

[0094] (compounds in the table)

[0095] In Examples and Comparative Examples, the following compounds were used.

[0096] ・Base resin: SUMITATEKA-30, ethylene vinyl acetate resin (manufactured by Sumitomo Chemical Co., Ltd.)

[0097] Organic compound A: 4,7-bis(4-isobutyloxyphenyl)-2-isobutyl-2H-benzotriazole

[0098] · Peroxide: peroxy-2-ethylhexyl monocarbonate tert-butyl (manufactured by NOF Corporation, Perbutyl E)

[0099] ・Crosslinking aid: triallyl isocyanurate (manufactured by Nippon Kasei Co., Ltd., TAIC)

[0100] ・BHT: Dibutylhydroxytoluene (manufactured by Tokyo Chemical Industry Co., Ltd.)

[0101] Tinuvin144: [[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]butylmalonate bis(1,2,2,6,6-pentamethyl Cyl-4-piperidinyl) ester (manufactured by BASF, molecular weight 685)

[0102] · Tinuvin770DF: bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacat...

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Abstract

The present invention relates to providing a composition for solar cells, which is capable of forming a sealing material layer for solar cells, said sealing material layer being able to be sufficiently cured and crosslinked during module lamination and being suppressed in deterioration even after exposure to ultraviolet light for a long period of time. The present invention also relates to providing: a sealing material layer for solar cells, which is able to be sufficiently cured and crosslinked during module lamination and is suppressed in deterioration even after exposure to ultraviolet light for a long period of time; and a solar cell module which uses this sealing material layer for solar cells. A sealing material composition for solar cells, which is characterized by containing a dibutyl hydroxy toluene (BHT) derivative and a hindered amine compound having a phenol skeleton in each molecule.

Description

technical field [0001] The present invention relates to a solar cell sealing material layer composition, a solar cell sealing material layer, and a solar cell module using the solar cell sealing material layer. Background technique [0002] Through the utilization of solar energy, it is possible to provide an energy source that is expected to replace conventional fossil fuels. Therefore, the development of devices that can convert solar energy into electricity, such as photovoltaic devices (also known as solar cells), etc. Development has received much attention in recent years. Several different types of mature photovoltaic devices have been developed, among which, to name a few, silicon-based devices, III-V and II-VI PN junction devices, copper-indium-gallium-selenium (CIGS) thin-film devices , organic sensitizer devices, organic thin film devices, and cadmium sulfide / cadmium telluride (CdS / CdTe) thin film devices are included. More detailed descriptions of the above dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048
CPCC08L23/12C08K5/14C08K5/3435C08K5/3475H01L31/0481Y02E10/50
Inventor 北原达也千田洋毅尾之内久成中西贞裕
Owner NITTO DENKO CORP
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