Solar cell assembly package glue film and application thereof

A technology for solar cells and encapsulation films, applied in the field of solar cells, can solve the problems of low conversion efficiency and low conversion efficiency of solar cells, and achieve the effects of high conversion efficiency, reduced reflection and reduced surface reflection

Inactive Publication Date: 2016-11-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limitations of the materials used in solar cells, part of the energy of high-energy photons in the solar spectrum cannot be effectively absorbed for power generation, resulting in low conversion efficiency of solar cells
[0003] After the solar cells are packaged into modules, due to the addition of glass plates and organic films in the components, the reflection of incident light increases, resulting in the conversion efficiency of the packaged components being lower than that of the cells before packaging.

Method used

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  • Solar cell assembly package glue film and application thereof
  • Solar cell assembly package glue film and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An encapsulation adhesive film for solar cell modules, which is composed of a transparent organic adhesive film 1 and spectral down-conversion particles 2, the spectral down-conversion particles 1 are distributed in the transparent organic adhesive film 2, and the spectral down-conversion particles 1 are made of ethylene-vinyl acetate Ester copolymer, spectrum down-conversion particle 2 adopts yttrium aluminum garnet phosphor of rare earth element cerium.

[0030] The preparation method is as follows: in the process of preparing the transparent ethylene-vinyl acetate copolymer, the yttrium aluminum garnet phosphor powder containing rare earth element cerium is mixed into the mixture of three different phosphor powder contents. According to the size of the fluorescent powder content, it is poured into the container in turn to form a mixture with a gradually increasing particle distribution density from top to bottom, and then it is cured and formed to form a film.

Embodiment 2

[0032] An encapsulation adhesive film for solar cell modules, which is composed of a transparent organic adhesive film 1 and spectral down-conversion particles 2, the spectral down-conversion particles 1 are distributed in the transparent organic adhesive film 2, the spectral down-conversion particles 1 are made of organic silica gel, and the spectral down-conversion particles 1 are made of organic silica gel. The down-conversion particle 2 adopts yttrium aluminum garnet phosphor containing rare earth elements cerium and ytterbium.

[0033] The preparation method is as follows: in the process of preparing transparent organic silica gel, yttrium aluminum garnet phosphor powder containing rare earth elements cerium and ytterbium is added to make a mixture of five kinds of phosphor powders with different contents. Each mixture is cured and formed to form adhesive films with different phosphor particle densities.

Embodiment 3

[0035] An encapsulation adhesive film for solar cell modules, which is composed of a transparent organic adhesive film 1 and spectral down-conversion particles 2, the spectral down-conversion particles 1 are distributed in the transparent organic adhesive film 2, and the spectral down-conversion particles 1 are made of ethylene-vinyl acetate Ester copolymer, spectral down conversion particles 2 using quantum dots.

[0036] The preparation method is as follows: in the process of preparing the transparent ethylene-vinyl acetate copolymer, quantum dots are added to prepare a mixture of three different quantum dot contents. According to the size of the quantum dot content, it is poured into the container in turn to form a mixture with a gradually increasing particle distribution density from top to bottom, and then it is cured and formed to form a film.

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Abstract

The present invention discloses a solar cell assembly package glue film and an application thereof. The packaging glue film is composed of a transparent organic glue film and under-spectrum conversion particles, the under-spectrum conversion particles are distributed in the transparent organic glue film, and the distribution density of the under-spectrum conversion particles increases gradually from top to bottom. The advantages of the glue film are that: the high-energy photons in the sunlight become the low-energy photons easier to absorb, at the same time, a gradual change refractive index gradient from top to bottom is formed in a solar cell assembly, and the surface reflection is reduced. According to the present invention, the high-energy photons can be utilized more effectively, the surface reflection also can be reduced, and the photoelectric conversion efficiency of the solar cell assembly is improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to an encapsulation adhesive film for solar cell components. Background technique [0002] When sunlight hits the surface of a solar cell, part of the light is reflected by the surface, while the rest is absorbed or transmitted. Due to the limitations of the materials used in solar cells, part of the energy of high-energy photons in the solar spectrum cannot be effectively absorbed for power generation, resulting in low conversion efficiency of solar cells. [0003] After the solar cells are packaged into modules, the reflection of incident light increases due to the addition of glass plates and organic films in the modules, resulting in lower conversion efficiency of the modules after packaging than those of the cells before packaging. Contents of the invention [0004] The purpose of this invention is to provide a kind of encapsulant adhesive film for solar cell assembly, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/055
CPCH01L31/0481H01L31/055Y02E10/52
Inventor 娄朝刚邵国键李路曹辉辉
Owner SOUTHEAST UNIV
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