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Organic carrier for silicon solar cell positive silver paste and preparation method

A technology of silicon solar cells and organic carriers, applied in the direction of conductive materials, circuits, electrical components, etc. dispersed in non-conductive inorganic materials, can solve the problems of inability to achieve molding capabilities, and achieve improved photoelectric conversion efficiency and over-ink volume Larger, enhanced aspect ratio effects

Inactive Publication Date: 2018-09-07
JIANGSU HOYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ingredients and proportions used still cannot achieve good molding ability and greatly improve the aspect ratio of the slurry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The invention is an organic carrier for front silver paste of silicon solar cell, which is composed of: 3% ethyl cellulose, 5% polyester resin, 3% polyurethane resin, 10% rosin modified resin, butyl carboxylate Must alcohol acetate 41%, alcohol ester twelve 32%, alkyl ammonium salt type cationic surfactant 6% (all are percent by weight).

[0020] The preparation method is as follows:

[0021] (1) Weigh each component according to the proportion

[0022] (2) Add the solvent to the stirring device first, then add ethyl cellulose, polyester resin, polyurethane resin, and modified rosin resin to the stirring device, stir and disperse at 1000r / min, dissolve at 60°C for 60min to obtain a uniform the solution

[0023] (3) Add alkylammonium salt type cationic surfactant at room temperature, and emulsify and disperse for 10min with an emulsifier at 3000r / min.

Embodiment 2

[0025] The only difference from Example 1 is that the composition of the organic vehicle is: polyvinyl butyral 2%, ethyl cellulose 3%, rosin modified resin 5%, polyamide resin 5%, ethylene glycol phenyl ether 20% %, dimethyl adipate 15%, butyl carbitol acetate 40%, byk180 2%, polyamide wax powder 8%.

[0026] The preparation method is as follows:

[0027] (1) Weigh each component according to the proportion

[0028] (2) Add the solvent to the stirring device first, then add polyvinyl butyral, ethyl cellulose, polyurethane resin, and modified rosin resin to the stirring device, stir and disperse at 2000r / min, and dissolve at 80°C for 60min get a homogeneous solution

[0029] (3) Then add polyamide wax powder, stir and disperse at 60°C, 3000r / min for 60min to obtain a paste

[0030] (4) Add byk180 at room temperature, emulsify and disperse at 4000r / min for 10min.

Embodiment 3

[0032] The only difference from Example 1 is that the composition of the organic vehicle is: 5% of hydroxyl acrylic resin, 6% of aldehyde and ketone resin, 5% of cellulose acetate butyrate resin, 20% of modified rosin resin, and 30% of alcohol ester-12 %, butyl carbitol 25%, modified hydrogenated castor oil 6%, alkyl ammonium salt type cationic surfactant 3%.

[0033] The preparation method is as follows:

[0034] (1) Weigh each component according to the proportion

[0035] (2) Add the solvent to the stirring device first, then add the hydroxyacrylic resin, aldehyde and ketone resin, cellulose acetate butyrate resin, and modified rosin resin to the stirring device, stir and disperse at 2000r / min, and dissolve at 60°C 60min to get a homogeneous solution

[0036] (3) Add modified hydrogenated castor oil, stir and disperse at 40°C, 2000r / min for 60min to obtain a paste

[0037] (4) Add alkylammonium salt type cationic surfactant at room temperature, emulsify and disperse for ...

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PUM

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Abstract

The invention discloses an organic carrier for silicon solar cell positive silver paste and a preparation method. The organic carrier is prepared from modified rosin resin, at least two kinds of functional resin, a solvent, a thixotropic agent and an auxiliary. According to the organic carrier provided by the invention, through reasonable matching of different functional resin, the printing performance of the paste is improved. The paste prepared by mixing the organic carrier with silver powder according to a certain proportion is suitable for filament screen printing and has superior printingperformance, so that the yield of battery pieces is increased; the ink passing amount of the paste is large, the shaping capability of grids is high, and the depth-width ratio of the paste is increased, so that the photoelectric conversion efficiency of solar cells is increased.

Description

technical field [0001] The invention relates to the technical field of electronic materials, in particular to an organic carrier of a conductive positive silver paste for a crystalline silicon solar cell and a preparation method thereof. Background technique [0002] With the development of the economy and society, the human demand for energy continues to grow. The development of new renewable energy is an important way for human beings to solve the problem of energy demand. Among them, the use of photovoltaic power generation to develop and utilize solar energy is the most eye-catching. The conductive silver paste is an important raw material for the production of solar cells. Therefore, the development of high-efficiency solar front silver paste is of great significance for promoting the technological innovation of my country's solar cell industry and meeting the huge demand of the future market. [0003] Crystalline silicon solar front silver conductive paste mainly in...

Claims

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Application Information

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IPC IPC(8): C08L67/00C08L1/28C08L75/04C08L77/00C08L29/14C08L91/00C08L93/04C08L33/04C08L61/02C08L1/14C08L39/06C08L71/12C08K5/101C08K5/11C08K5/06H01L31/0224H01B1/22
CPCC08L39/06C08L67/00C08L71/12C08L77/00C08L91/00C08L93/04C08L2203/204C08L2205/025C08L2205/035H01B1/22H01L31/022425C08L1/28C08L75/04C08K5/101C08L29/14C08K5/11C08K5/06C08L33/04C08L61/02C08L1/14
Inventor 李茂林陈志鹏王茂郑曼曼
Owner JIANGSU HOYI TECH
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