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Conductive silver aluminum paste, preparation method, electrode and battery

A conductive silver and aluminum paste technology, which is applied to conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc., can solve problems such as low minority carrier lifetime, increased light-induced attenuation, and restrictions on P-type silicon , to achieve the effect of reducing bulk resistance, reducing damage and improving contact resistance

Active Publication Date: 2022-07-29
上海银浆科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because P-type silicon has the problems of low minority carrier lifetime and increased light-induced attenuation, this severely limits and restricts the further improvement of the photoelectric conversion efficiency of P-type silicon cells.
Compared with P-type silicon, N-type silicon has the advantages of high multi-substance lifetime and small light-induced attenuation. However, due to technical and process limitations, its development has been slower than that of P-type silicon.

Method used

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  • Conductive silver aluminum paste, preparation method, electrode and battery
  • Conductive silver aluminum paste, preparation method, electrode and battery
  • Conductive silver aluminum paste, preparation method, electrode and battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment GA01-GA06

[0053] Preparation of the first type of glass powder: Calculate and weigh the first type of glass powder using raw materials according to the set formula. The added alkali metal oxide is the carbonate corresponding to the oxide. The properties of the carbonate It is more stable and not easy to be oxidized and deteriorated. Then mix the raw materials evenly, add them into the crucible, put the crucible in the muffle furnace, and keep the temperature at 750℃-1100℃ for 20-60min. After the raw materials are completely melted and reacted, take them out and pour the glass liquid into the crucible. Enter the low-temperature counter-roller or low-temperature ice tank to cool the high-temperature glass liquid, and then use high-speed airflow and cold air to dry at room temperature to obtain glass particles, and then add the dried glass particles to a disc mill and grind it into primary under the disc gap of 50-200 microns. Glass powder, and finally the primary glass powder is pulverized...

Embodiment GB01-GB06

[0058] Preparation of the second type of glass powder: Calculate and weigh the raw materials of the second type of glass powder according to the set formula. The added alkali metal oxide is the carbonate of the corresponding proportion of the oxide, and BaO is the corresponding proportion. BaCO 3 , then mix the raw materials evenly, add them into the crucible, then put the crucible in the muffle furnace, keep the temperature at 750℃-1100℃ for 20-60min, take out the raw materials after the complete melting reaction, pour the glass liquid into the low-temperature counter-roller or low-temperature The ice tank is cooled, and then the glass particles are obtained by drying at room temperature with high-speed airflow and cold air. Then, the dried glass particles are added to the disc mill and crushed into primary glass powder under the disc gap of 50-200 microns. Finally, the primary glass powder is passed through the airflow. The pulverizer is crushed under the pressure of 6-12Mpa...

Embodiment O

[0062] Examples OC01-OC06:

[0063] Preparation of organic carrier: The prepared organic carrier raw materials are weighed according to the set formula ratio, stirred and mixed, and uniformly dispersed by high-speed centrifugation to obtain organic carriers OC01-OC06 for use. The composition ratio of each organic carrier is shown in Table 3.

[0064] Table 3 Organic carrier weight component table (wt%)

[0065] name OC01 OC02 OC03 OC04 OC05 OC06 Organic solvents 60.0 75.0 80.0 65.2 80.0 75.0 organic resin 2.5 1.0 9.8 3.0 cellulose 2.5 4.5 3.0 thickener 20.0 15.0 10.0 5.0 15.0 7.5 defoamer 15.0 10.0 9.0 20.0 0.5 11.5 total 100.0 100.0 100.0 100.0 100.0 100.0

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Abstract

The invention discloses conductive silver-aluminum paste, a preparation method, an electrode and a battery, the conductive silver-aluminum paste comprises the following components in percentage by weight: 80.0-90.0% of silver powder, 0.1-1.0% of aluminum powder, 0.1-1.0% of silicon powder, 0.1-1.0% of first glass powder, 0.1-1.0% of second glass powder and 0.1-1.0% of organic carrier, and the total weight of the conductive silver-aluminum paste is 100%. 0.3%-2.5% of aluminum powder; 0.0%-1.5% of silicon powder; 1.0%-6.0% of first glass powder; 0.5%-4.0% of a second type of glass powder; 7.0%-15.0% of an organic carrier; the first type of glass powder is Pb-Zn-B-O-M series glass powder, the second type of glass powder is Ba-B-O-M series glass powder, and M is at least one of alkali metal elements; the organic carrier is a carrier containing organic resin and / or cellulose, and the content of the organic resin and / or cellulose in the organic carrier does not exceed 10.0% of the total mass of the organic carrier. By introducing two different types of glass powder, the contact resistance between the metal grid line and the PN junction is reduced, and the high-performance silver-aluminum paste for the N-type Topcon monocrystalline silicon cell and the high-efficiency electrode metallization of the N-type silicon solar cell are realized.

Description

technical field [0001] The invention belongs to the field of silicon solar cells, and in particular relates to a conductive silver-aluminum paste, a preparation method, an electrode and a battery. Background technique [0002] With the increasing consumption of traditional fossil energy around the world, fossil energy is facing a crisis of exhaustion within a century, and the rising oil price has also caused people's living costs to increase. The problem of environmental pollution is also becoming more and more prominent, and the development and research of new energy in various countries in the world has reached an unprecedented height, which has prompted the rapid development of solar power generation technology in the past ten years. [0003] In just a few years, P-type silicon solar power technology has experienced rapid development from polycrystalline silicon cells to monocrystalline silicon cells, to perc monocrystalline cells, and then to today's mainstream Se-perc m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/16H01B13/00
CPCH01B1/16H01B13/00H01B1/22C03C8/22C03C8/16C03C8/18C03C8/04C03C8/10C03C3/074C03C3/142C03C3/064C03C3/066H01L31/022425
Inventor 陈小龙乔亮刘兵刘洁马灿王赟
Owner 上海银浆科技有限公司
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