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Glass powder, positive silver paste, and preparation methods therefor

A technology of glass powder and silver paste, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, electrical components, etc. It can solve the problems of lead-containing silver paste and improve solderability and tension, to achieve applicability, to ensure the effect of performance stability

Active Publication Date: 2017-03-15
SHANGHAI TRANSCOM ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of glass frit, front silver paste and preparation method thereof, in order to solve the problem that front silver paste contains lead in the prior art

Method used

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  • Glass powder, positive silver paste, and preparation methods therefor
  • Glass powder, positive silver paste, and preparation methods therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 11), preparation of organic vehicle: take mass percentage as 15% ethyl cellulose resin, mass percentage as 8% rosin resin, mass percentage as 10% phenolic resin, add mass percentage as 67% solvent (propylene glycol methyl ether acetate, pine One or more mixtures of oleyl alcohol, ethylene glycol monobutyl ether acetate, turpentine, butyl carbitol, and petroleum ether) are dissolved at a temperature of 80-150°C while stirring while heating, and after 2 hours A uniform and transparent organic carrier can be obtained.

[0039] 12) Preparation of glass powder: Take the G1 formula glass powder in the above table 1, mix the above-mentioned raw materials that have been weighed evenly with a mixer, and then place them in a high-temperature muffle furnace. The temperature is controlled at 600 ° C ~ 1200 ° C 1 hour. The melted glass melt is poured into deionized water and quenched, ball milled to 1um and then sieved through a 325-400 mesh screen to obtain suitable glass powder f...

Embodiment 2

[0043] 21), preparation of organic vehicle: take mass percentage as 15% ethyl cellulose resin, mass percentage as 5% rosin resin, mass percentage as 10% phenolic resin, add mass percentage as 70% solvent (propylene glycol methyl ether acetate, pine One or more mixtures of oleyl alcohol, ethylene glycol monobutyl ether acetate, turpentine, butyl carbitol, and petroleum ether) are dissolved at a temperature of 80-150°C while stirring while heating, and after 2 hours A uniform and transparent organic carrier can be obtained.

[0044] 22) Preparation of glass powder: Take the G2 formula glass powder in the above table 1, mix the above-mentioned raw materials that have been weighed evenly with a mixer, and then place them in a high-temperature muffle furnace. The temperature is controlled at 600 ° C ~ 1200 ° C 1 hour. The melted glass melt is poured into deionized water and quenched, ball milled to 1um and then sieved through a 325-400 mesh screen to obtain suitable glass powder f...

Embodiment 3

[0048] 31), preparation of organic vehicle: take mass percentage as 7% ethyl cellulose resin, mass percentage as 5% rosin resin, mass percentage as 15% phenolic resin, add mass percentage as 73% solvent (propylene glycol methyl ether acetate, pine One or more mixtures of oleyl alcohol, ethylene glycol monobutyl ether acetate, turpentine, butyl carbitol, and petroleum ether) are dissolved at a temperature of 80-150°C while stirring while heating, and after 2 hours A uniform and transparent organic carrier can be obtained.

[0049] 32) Preparation of glass powder: Take the G3 formula glass powder in the above table 1, mix the above-mentioned raw materials that have been weighed evenly through a mixer, and then place them in a high-temperature muffle furnace. The temperature is controlled at 600 ° C ~ 1200 ° C 1 hour. The melted glass melt is poured into deionized water and quenched, ball milled to 1um and then sieved through a 325-400 mesh screen to obtain suitable glass powder...

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Abstract

The invention provides glass powder, positive silver paste, and preparation methods therefor. The glass powder consists of the following components by percentage: 45%-95% of TeO2, 4-40% of Bi2O3, 1-20% of Na2O, 10% of B2O3, ZnO, Al2O3 and SiO2 or less, and 5.5% of LiO2 or less. The positive silver paste comprises the above glass powder. The glass powder is in a Te-Bi-M glass system, wherein M is alkali metal, such as Li, Na, K and so on. The system employs a non-lead compound, thereby achieving the lead-free glass powder, meeting the demands of environment protection, and also improving the applicability of the high-sheet-resistance technology. Therefore, the positive silver paste is prepared through the no-lead glass powder, and can achieve the lead-free glass powder. The methods can effectively increase the sintering temperature through controlling the addition volume of the alkali metal, guarantee the performance stability of a product, improve the weldability and tension force of a grid line, effectively improve the photoelectric conversion efficiency of a silica-based battery, and enables the silver paste to be as good or even better than the positive silver paste in the market currently.

Description

technical field [0001] The invention relates to the technical field of silver paste for electrodes of electronic components, in particular to glass powder, front silver paste and a preparation method thereof. Background technique [0002] With the shortage of fossil energy and people's concern about carbon dioxide emissions, solar power generation technology has been developed by leaps and bounds. As the main body of solar power generation technology, crystalline silicon solar cell technology has always attracted people's attention. The quality of solar cells not only depends on the carrier concentration, distribution and mobility in the crystalline silicon material used, but also is affected by the performance of the positive and negative electrodes of the battery. The front electrode directly affects the series resistance, shunt resistance, fill factor and photoelectric conversion efficiency, so the quality of the silver paste on the front electrode determines the perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B13/00C03C12/00
Inventor 杨建平张俊刚危训鹏
Owner SHANGHAI TRANSCOM ELECTRONICS TECH
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