Low-temperature sintered crystalline silicon solar cell positive electrode silver slurry and preparing method thereof

A solar cell, low-temperature sintering technology, applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc. The effect of high photoelectric conversion efficiency, low sintering temperature, and reduced metallization temperature

Inactive Publication Date: 2018-02-23
QINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above documents and existing patented technologies only relate to the improvement of the front electrode silver paste bonding material, printability, etc., but do not consider the performance of the front electrode silver paste from the perspective o

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step A: Prepare glass powder. Weigh 8.0wt% bismuth oxide, 27.0wt% tellurium oxide, 60.0wt% lead oxide, 5.0wt% lithium oxide, 0.3wt% potassium oxide. Mix the above raw materials evenly with a three-dimensional mixer, put them in a platinum crucible, put them in a high-temperature resistance furnace for melting, and melt them at 1000°C for 1 hour. After taking them out, they are water-quenched, crushed, ball-milled, sieved, and dried at 65°C. Sieve to obtain glass powder with an average particle size of 0.3-1.5 μm;

[0033] Step B: Preparation of organic vehicle. Take by weighing 63.0wt% diethylene glycol butyl ether, 12.0wt% diethylene glycol dibutyl ether, 12.0wt% butyl carbitol acetate, 6.0wt% ethyl cellulose, 3.5wt% surfactant Class 85, 0.5wt% organic bentonite as anti-settling agent. First add diethylene glycol butyl ether, diethylene glycol dibutyl ether and butyl carbitol acetate into a stainless steel container and mix, then add ethyl cellulose during the stirr...

Embodiment 2

[0044] Step A: Weigh 30.0wt% bismuth oxide, 20.0wt% tellurium oxide, 49.0wt% lead oxide, 1.0wt% lithium oxide, 0.1wt% potassium oxide. After mixing the above raw materials evenly with a three-dimensional mixer, put them in a platinum crucible, place them in a high-temperature resistance furnace for melting, and melt them at 950°C for 1 hour. After taking them out, they are water-quenched, crushed, ball-milled, sieved, and dried at 75°C. Sieve to obtain glass powder with an average particle size of 0.3-1.5 μm;

[0045] Step B: Preparation of organic vehicle. Weigh 64.0wt% diethylene glycol butyl ether, 15.5wt% diethylene glycol dibutyl ether, 10.0wt% butyl carbitol acetate, 5.0wt% ethyl cellulose, 6.0wt% surfactant Class 85, 1.6wt% organic bentonite as anti-settling agent. First add diethylene glycol butyl ether, diethylene glycol dibutyl ether and butyl carbitol acetate into a stainless steel container and mix, then add ethyl cellulose during the stirring process, raise the ...

Embodiment 3

[0056] Step A: Weigh 17.0wt% bismuth oxide, 60.0wt% tellurium oxide, 20.0wt% lead oxide, and 3.0wt% lithium oxide. After mixing the above raw materials evenly with a three-dimensional mixer, put them in a platinum crucible, put them in a high-temperature resistance furnace for melting, and melt them at 900 ° C for 1 hour. After taking them out, they are water quenched, crushed, ball milled, sieved, and dried at 70 ° C. Sieve to obtain glass powder with an average particle size of 0.3-1.5 μm;

[0057] Step B: Preparation of organic vehicle. Weigh 60.0wt% diethylene glycol butyl ether, 8.0wt% terpineol, 12.0wt% diethylene glycol dibutyl ether, 10.0wt% butyl carbitol acetate, 12wt% ethyl cellulose, 4.0wt% % nitrocellulose, 3.0wt% surfactant Span 85, 1.0wt% anti-sedimentation agent organic bentonite. First add diethylene glycol butyl ether, terpineol, diethylene glycol dibutyl ether and butyl carbitol acetate into a stainless steel container for mixing, then add ethyl cellulose ...

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PUM

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Abstract

The invention discloses a low-temperature sintered crystalline silicon solar cell positive electrode silver slurry and a preparing method thereof. The method comprises the steps of 1, preparing glasspowder, wherein raw materials are weighed, mixed evenly, smelted, then taken out, subjected to water quenching, smashing and ball-milling, sieved, dried and sieved to obtain the glass powder; 2, preparing an organic carrier, wherein resin and an organic solvent are weighed, the resin is dissolved in the organic solvent, a dispersant and an anti-settling agent are added as additives, and a mixtureis stirred evenly to form the organic carrier; 3, weighing silver powder, the glass powder and metallic oxide powder, adding the silver powder, the glass powder and the metallic oxide powder into theorganic carrier, stirring a mixture evenly, grinding the mixture, conducting vacuum degassing on the mixture, and obtaining the silver slurry when detection is qualified.

Description

technical field [0001] The invention belongs to electronic materials, relates to the fields of electronics, chemical industry and materials, and relates to a solar cell front electrode silver paste and a preparation method thereof, in particular to a low-temperature sintered crystalline silicon solar cell front electrode silver paste and a preparation method. Background technique [0002] Crystalline silicon solar cells are currently the most widely used solar cells, but because of their continuous use for more than 50 years, metallized electrodes are key materials for crystalline silicon solar cells, especially the front gate material, which directly affects the photoelectric conversion efficiency of solar cells , filling shadow, series resistance and other performance indexes, so the quality and performance of the front electrode silver paste directly determine the service life and attenuation of the battery. The front silver paste is metallized by screen printing process....

Claims

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Application Information

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IPC IPC(8): H01B1/22H01B13/00H01L31/0224
CPCH01B1/22H01B13/00H01L31/022425Y02E10/50
Inventor 王立惠石海信尹艳镇
Owner QINZHOU UNIV
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