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Organic carrier for solar cell slurry and preparation method of organic carrier

A technology of solar cells and organic carriers, applied in applications, circuits, photovoltaic power generation, etc., can solve the problems that the aluminum paste has a large impact and cannot be completely solved, and achieves the effects of not being easy to resin agglomeration, not easy to scratch, and strong bearing capacity

Inactive Publication Date: 2018-03-09
湖南利德电子浆料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By adjusting the combination of glass powder and aluminum powder, the phenomenon can be improved to some extent, but it cannot be completely solved.
And by adjusting aluminum powder, glass powder or adding other additives, it will have a greater impact on the entire back aluminum paste

Method used

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  • Organic carrier for solar cell slurry and preparation method of organic carrier

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] 1. First, the components of the organic solvent: 15% terpineol, 51% diethyl butyl ether, 10% diethylene glycol butyl ether acetate, and 10% ethylene glycol phenyl ether are formulated into solvents and then added to the stirring reactor. And heated to 55°C at a stirring rate of 30 rev / min;

[0026] 2. Then 4.5% Span-85, 2% ethyl cellulose, 4% CAB-381-20, 3.5% phenolic resin, under the condition that the stirring rate is 50 rpm and the temperature in the reactor is 55°C, Put into the stirred reactor;

[0027] 3. Then heat up to 90°C under stirring and cook at constant temperature for 2 hours. After the components in the stirred reactor are completely dissolved and dispersed evenly, filter with a 200-mesh screen while it is hot, and obtain evenly dispersed The organic carrier used for the aluminum paste on the back of solar crystalline silicon cells, the specific performance parameters are shown in Table 1.

example 2

[0029] 1. First, the components of the organic solvent: 10% terpineol, 42% diethyl ether butyl ether, 20% diethylene glycol butyl ether acetate, 10% alcohol ester twelve, and 5% tributyl citrate are prepared The solvent is then added to the stirred reactor, and heated to above 50°C at a stirring rate of 30 rpm;

[0030] 2. Then add 3.5% Span-85, 0.8% lecithin, 2% ethyl cellulose, 2.2% CAB-381-20, 1% CAB-381-2BP, 3% phenolic resin, 0.5% polyaldehyde resin in Stirring speed is 50 rpm and the temperature in the reactor is 55°C, put it into the stirred reactor;

[0031] 3. Then heat up to 90°C under stirring and cook at constant temperature for 2 hours. After the components in the stirred reactor are completely dissolved and dispersed evenly, filter with a 200-mesh screen while it is hot, and obtain evenly dispersed The organic carrier used for the aluminum paste on the back of solar crystalline silicon cells, the specific performance parameters are shown in Table 1.

example 3

[0033] 1. First, the components of the organic solvent: 15% terpineol, 45% diethyl butyl ether, 10% diethylene glycol butyl ether acetate, 10% alcohol ester twelve, 5% tributyl citrate, benzene 3.5% methanol is prepared as a solvent, then added to the stirred reactor, and heated to above 50°C at a stirring rate of 30 rpm;

[0034] 2. Then mix 3.5% Span-85, 2% ethyl cellulose, 2% CAB-381-20, 3.5% phenolic resin, and 0.5% polyaldehyde resin at a stirring rate of 50 rpm and a high temperature in the reactor Put it into the stirred reactor at 55°C;

[0035] 3. Then heat up to 90°C under stirring and cook at constant temperature for 2 hours. After the components in the stirred reactor are completely dissolved and dispersed evenly, filter with a 200-mesh screen while it is hot, and obtain evenly dispersed The organic carrier used for the aluminum paste on the back of solar crystalline silicon cells, the specific performance parameters are shown in Table 1.

[0036] Table 1:

[00...

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Abstract

The invention discloses an organic carrier for aluminum paste on back of a solar crystalline silicon cell and a preparation method of the organic carrier. The organic carrier comprises the following components in percentage by mass: 86-90.4% of an organic solvent, 3.2-5% of a surfactant, 2-4.5% of ethyecellulose, 1-7% of cellulose acetate butyrate and 3.4-5% of phenolic aldehyde or aldehyde resin,totaling 100%. The aluminum paste prepared by using the organic carrier disclosed by the invention has excellent thixotropy, the aluminum paste standing for a long time is not layered or settled, hasexcellent bearing capacity on powder, has a uniform coating property during printing, is stable in continuous printing, and has excellent bonding strength and scratch hardness after drying. The sintered crystalline silicon cell has small deformation, the adhesive force at the overlap joint of the back aluminum paste and back silver paste is excellent, the adhesive force between the back aluminumpaste and the crystalline silicon cell is excellent, and whitening and cracking phenomena do not occur on the edge.

Description

Technical field: [0001] The invention specifically relates to an organic carrier for aluminum paste on the back of a solar crystalline silicon cell and a preparation method thereof. The organic carrier is used as the wetting and dispersed phase of the powder in the back aluminum paste and the supporting phase of the powder, giving it suitable rheological properties in the wet back aluminum paste, and can be well matched with other additives. After the aluminum paste is dried and before sintering, it can provide excellent adhesion between the aluminum paste film layer and the crystalline silicon cell. After sintering, the deformation of the crystalline silicon cell is small, and the adhesion between the aluminum paste and the crystalline silicon is excellent. Phenomenon. Background technique: [0002] During the preparation process of solar crystalline silicon cells, the aluminum paste is printed on the back of the crystalline silicon cells, and after drying and sintering, a...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L1/28C08L59/00C09D11/103C09D11/14C09D11/033H01L31/0224
CPCC08L61/06C08L2203/204C08L2205/03C09D11/033C09D11/103C09D11/14H01L31/022425C08L1/28C08L59/00Y02E10/50
Inventor 刘飘宁天翔宁文敏
Owner 湖南利德电子浆料股份有限公司
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