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A kind of conductive paste for solar cell encapsulation and its preparation method and application

A technology of solar cells and conductive pastes, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of poor thermal conductivity, high curing temperature of conductive adhesive, long curing time, etc., to achieve increased oxidation resistance, uniform properties, evenly dispersed effect

Active Publication Date: 2017-07-21
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing conductive adhesives have the disadvantages of high curing temperature, long curing time, and poor thermal conductivity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A conductive paste for solar cell encapsulation, consisting of the following components by weight: 5 parts of bismaleimide, 8 parts of matrix resin, 1 part of epoxy diluent, 2 parts of dispersant (stearamide), 10 parts of flaky graphene of modified loaded nano-silver, 1 part of curing agent (trimethylhexamethylenediamine), curing accelerator (2,4,6-tris(dimethylaminomethyl)phenol ) 0.5 parts, modified micron silver powder 70 parts, coupling agent (γ-aminopropyltriethoxysilane) 1.5 parts, antioxidant (2,5-di-tert-butylhydroquinone) 0.5 parts.

[0042] The matrix resin is composed of the following components in parts by weight: 25 parts of bismaleimide, 45 parts of bisphenol A epoxy resin, 10 parts of epoxy diluent, and 20 parts of dispersant.

[0043] The preparation method of described conductive paste, comprises the steps:

[0044] (1) Mix 5 parts of imide-extended bismaleimide, 8 parts of matrix resin, 1 part of butanediol diglycidyl ether and 1.5 parts of stearamide...

Embodiment 2

[0058] A conductive paste for solar cell encapsulation, consisting of the following components by weight: 10 parts of bismaleimide, 5 parts of matrix resin, 2 parts of epoxy diluent, 5 parts of dispersant (stearamide), 5 parts of modified scaly graphene loaded with nanometer silver, 1 part of curing agent, 0.2 part of curing accelerator, 65 parts of modified micron silver powder, 1 part of coupling agent, and 0.2 part of antioxidant.

[0059] The matrix resin is composed of the following components in parts by weight: 20 parts of bismaleimide, 35 parts of bisphenol A epoxy resin, 5 parts of epoxy diluent, and 15 parts of dispersant.

[0060] The preparation method of described conductive paste, comprises the steps:

[0061] (1) Mix 10 parts of imide-extended bismaleimide, 5 parts of matrix resin, 2 parts of butanediol diglycidyl ether (an epoxy diluent) and 4 parts of dispersant;

[0062] (2) Add conductive micron silver powder to the aqueous solution of arginine, stir for 30...

Embodiment 3

[0072] A conductive paste for solar cell encapsulation, consisting of the following components by weight: 7 parts of bismaleimide, 6 parts of matrix resin, 2 parts of epoxy diluent, 3 parts of dispersant, modified loaded nano 8 parts of silver flake graphene, 1 part of curing agent, 0.3 part of curing accelerator, 70 parts of modified micron silver powder, 2 parts of coupling agent, and 0.4 part of antioxidant.

[0073] The base resin is composed of the following components in parts by weight: 30 parts of bismaleimide, 45 parts of bisphenol A epoxy resin, 15 parts of epoxy diluent, and 25 parts of dispersant.

[0074] The preparation method of described conductive paste, comprises the steps:

[0075] (1) Mix 7 parts of imide-extended bismaleimide, 6 parts of matrix resin, 2 parts of butanediol diglycidyl ether (epoxy diluent) and 2.5 parts of dispersant;

[0076] (2) Add conductive micron silver powder to the aqueous solution of arginine, stir for 30 minutes, mix evenly, and ...

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Abstract

The invention relates to conductive slurry for solar cell encapsulation, a preparation method therefor and an application thereof. The conductive slurry consists of the following components in parts by weight: 5-10 parts of bismaleimide, 5-8 parts of matrix resin, 1-2 parts of an epoxy diluent, 2-5 parts of a dispersing agent, 5-10 parts of modified nano-silver-supported flaky graphene, 1-2 parts of a curing agent, 0.2-0.5 part of a curing accelerator, 65-75 parts of modified micronized silver powder, 1-2 parts of a coupling agent and 0.2-0.5 part of an anti-oxidant. The conductive slurry disclosed by the invention can be improved in thermal conductivity, electrical conductivity, oxidation resistance, mechanical property and temperature resistance by utilizing the modified nano-silver-supported flaky graphene, and is beneficial for dispersion after being functionalized, so that the dosage of the conductive slurry is reduced. The dispersion is improved by utilizing the modified nano-sliver, the dosage of silver powder is reduced, the oxidization resistance is increased, and the mechanical strength is increased. The matrix resin is mixed with the bismaleimide, the epoxy diluent butanediol diglycidyl ether and the dispersing agent, so that the temperature resistance is improved in a facilitated mode.

Description

technical field [0001] The invention relates to a conductive paste for solar cell packaging, a preparation method and application thereof. Background technique [0002] The use of solar energy is an effective means to realize the transformation of energy utilization structure, and the use of solar cells is an important way to effectively utilize solar energy. There are also various ways to improve the efficiency of solar cells. While effectively improving the internal quantum efficiency, the external quantum efficiency of the cell can also be improved through reasonable packaging, and the cost of the solar cell can also be reduced. The packaging of solar cells, especially the packaging of thin-film solar cells, requires low-temperature packaging. In addition, some types of solar cells are limited by the material and thickness of the front and back electrodes, and traditional alloy solders cannot be used in the packaging process. . [0003] As a substitute of traditional al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K13/06C08K9/12C08K9/04C08K3/04C08K5/20C08K5/18C08K3/08C08K5/544C08K5/13C08G59/50H01L31/05
CPCY02E10/50
Inventor 黄金昭陈刚汪上杰梁伟徐锡金
Owner UNIV OF JINAN
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