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A front silver paste for solar cells with low contact resistance and high photoelectric conversion efficiency and preparation method thereof

A technology for photoelectric conversion efficiency and solar cells, which is applied in the preparation of organic compounds, preparation of oxygen-containing functional groups, conductive materials dispersed in non-conductive inorganic materials, etc. Low level, high decomposition residual ash, etc., to achieve high photoelectric conversion efficiency, avoid incomplete purification, and smooth conduction.

Active Publication Date: 2022-08-09
江苏聚盈新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the binder and thixotropic agent in the organic carrier used to prepare the conductive paste of crystalline silicon solar cells have a lot of residual ash after the battery sheet is sintered, and the solvent is easy to separate out, which eventually leads to the failure of the prepared solar cell. In order to solve the problems of low sheet tension level and low photoelectric conversion efficiency of solar cells, a front silver paste for solar cells with low contact resistance and high photoelectric conversion efficiency and its preparation method are provided

Method used

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  • A front silver paste for solar cells with low contact resistance and high photoelectric conversion efficiency and preparation method thereof
  • A front silver paste for solar cells with low contact resistance and high photoelectric conversion efficiency and preparation method thereof
  • A front silver paste for solar cells with low contact resistance and high photoelectric conversion efficiency and preparation method thereof

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specific Embodiment approach 1

[0038] 具体实施方式一:本实施方式一种低接触电阻且高光电转换效率的太阳能电池用正面银浆料按重量份数由85份~95份银粉、1.8份~3.0份玻璃粉和7份~12 The organic carrier system is prepared;

[0039] The organic carrier of the organic carrier is from 72 to 86 parts to 86 parts, 4 to 10 parts of bonding, 2 ~ 5 parts, 0.5 to 1.5 copies, 2 ~ 4 parts of shaping. Establishment, 5 parts to 9 parts, 3 ~ 4 copies and 0.2 ~ 0.6 subsidiaries;

[0040] The adhesives are poly-hydroxyl-2-pentinoate;

[0041] The tactile tactile is a monuer tetraol (9-amino-10-hydroxyl eighteen carbonate) ester;

[0042] The dispersion agent is cluster 5- (n, n-di metharine) -1,4-pentaol single triam ether.

specific Embodiment approach 2

[0043] Specific implementation method 2: The difference between this implementation method and the specific implementation method is that the silver powder is the high -vibration density spherical small particle size silver powder, and the vibration density is 6.0g / cm 3 ~ 6.5g / cm 3 , High -vibration and density Small particle size Silver powder particle size D 50 It is 0.4 μm ~ 1.5 μm, D 100 ≤ 2.8 μm. Other steps are the same as specific embodiments.

specific Embodiment approach 3

[0044] Specific implementation method three: This implementation method is different from the specific implementation method 1 or two. The difference is that the glass powder is high -tension -free glass powder. 2 , 15 copies ~ 32 parts BI 2 O 3 , 12 to 20 parts B 2 O 3 , 1 copy ~ 5 parts SIO 2 , 0 ~ 1 CAO, 1 copy ~ 2 MGOs, 1.5 copies ~ 3 parts ZNO, 1 ~ 1.5 parts of li 2 O, 0.4 part ~ 1 part Al 2 O 3 , 5 copies ~ 10 parts ZRO 2 , 3 ~ 5 MOO 3 , 2 ~ 4 parts of PTO 2 , 1.5 parts ~ 3 parts SRO, 0.5 parts ~ 2 parts of WO 3 , 1 copy ~ 3 part V 2 O 5 , 0 ~ 1 portion NB 2 O 5 And 0 ~ 1 Reo 2 composition. Other steps are the same as specific embodiments.

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Abstract

A front silver paste for solar cells with low contact resistance and high photoelectric conversion efficiency and a preparation method thereof, and the technical field relates to a front silver paste for solar cells and a preparation method thereof. The purpose of the present invention is to solve the problem that the binder and thixotropic agent in the organic carrier used in the preparation of crystalline silicon solar cell conductive paste are more decomposed and residual ash after the cell is sintered, and the solvent is easy to precipitate, which eventually leads to the prepared solar cell. The problem of low sheet tension level and low photoelectric conversion efficiency of solar cells. In a front silver paste for solar cells with low contact resistance and high photoelectric conversion efficiency, the binder is poly5-hydroxy-2-ethyl pentenoate, and the thixotropic agent is pentaerythritol tetrakis(9-amino-10-hydroxyl) octadecanoic acid) ester, and the dispersant is poly-5-(N,N-dimethylamino)-1,4-pentanediol monotriethylamine ether. The present invention can obtain a front silver paste for solar cells with low contact resistance and high photoelectric conversion efficiency.

Description

Technical field [0001] The technology field involves a front silver pulp and its preparation method for a solar cell. Background technique [0002] The organic carrier is an important auxiliary ingredient in the crystalline silicon solar cell conductive plasma. It has no direct contribution to the conductive performance of the battery film. The content of the silver pulp plays a vital role in the printing properties and photoelectric conversion efficiency of silver pulp. Organic carriers are mainly composed of solvents, adhesives, current prevention and wetting agents, etc. They give the silver slurry system, respectively, adhesive, "one touch" function, and decentralization. Silver powder, glass powder and other powder materials can be obtained in multiple groups of liquids while achieving a rapid response to the shear stress or shear rate applied to the outside world. In addition, a good organic carrier can also ensure that the powder wrapped in the carrier can be printed on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/16H01B1/22H01B13/00H01L31/0224C08G65/26C08F120/28C07F3/06C07D307/14C07D307/12C07C227/18C07C227/06C07C67/31C07C67/08C07C51/363C07C45/75C07C29/14
CPCH01B1/16H01B1/22H01B13/00H01L31/022425C08F120/28C08G65/2609C07C51/363C07C67/08C07F3/06C07C67/31C07C45/75C07C29/14C07C227/06C07C227/18C07D307/12C07D307/14C07C57/54C07C69/653C07C69/732C07C47/19C07C31/245C07C229/22Y02E10/50
Inventor 柳静席军涛马生华王惠
Owner 江苏聚盈新材料科技有限公司
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