Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Silver-aluminum paste for front fine grid of high-performance N-type solar cell and preparation method of silver-aluminum paste

A solar cell, high-performance technology, applied in cable/conductor manufacturing, circuit, photovoltaic power generation, etc., can solve the problem of low photoelectric conversion efficiency of cells, improve chemical stability and mechanical strength, improve photoelectric conversion efficiency, and improve development pressure effect

Inactive Publication Date: 2021-08-13
浙江奕成科技有限公司
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the problem that the photoelectric conversion efficiency of the battery is reduced when the P-type silver paste is used on the N-type crystalline silicon battery, the application provides a silver-aluminum paste for the front fine grid of a high-performance N-type solar battery and its preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0039] Preparation of glass powder: Weigh 65 parts of Bi respectively 2 o 3 , 20 copies of B 2 o 3 , 5 parts of SiO2 , 5 parts of ZnO, 3 parts of LiO, and 2 parts of BaO, put the glass powder raw materials in a crucible, mix and stir evenly, place the crucible in a high-temperature furnace and heat it to 1200°C for 1 hour, and melt it into a uniform glass liquid. The molten glass is pressed into glass flakes with a tablet press, and then the above-mentioned glass flakes are pulverized in a ball mill for 5 hours at a speed of 300r / min. The glass powder was dried in a drying oven at 80°C for 10 hours to obtain glass powder.

[0040] Among them, LiO is the oxide of the I main group element, and BaO is the oxide of the II main group element. The glass transition temperature of the glass powder is 350°C, the particle size distribution is 0.5-10 μm, and the D50 is 1.5-2 μm.

preparation example 2

[0042] Preparation of organic binder: 20 parts of alcohol ester twelve, 5 parts of diethylene glycol dibutyl ether, 30 parts of butyl carbitol acetate, 25 parts of diethylene glycol ethyl ether acetate, 5 parts of hexamethylene glycol Dimethyl citrate, 5 parts of tributyl citrate, 5 parts of ethyl cellulose and 5 parts of acrylic resin were mixed and stirred at 60°C for 1 hour, and sieved with a 200-mesh sieve to obtain an organic binder.

Embodiment 1

[0045] The application discloses a high-performance silver-aluminum paste for front fine grids of N-type solar cells. The silver-aluminum paste for high-performance N-type solar cell front fine grids includes the following raw materials: conductive silver powder, organic carrier, glass powder and aluminum powder.

[0046] Among them, the conductive silver powder is spherical silver powder with a particle size of 0.5-5 μm, D50 is 1.5 μm, and D50 refers to the corresponding particle size when the cumulative particle size distribution percentage of a sample reaches 50%. Its physical meaning is that the particles with a particle size larger than it account for 50%, and the particles smaller than it also account for 50%.

[0047] The aluminum powder is spherical aluminum powder, the oxygen content is 0.5%, the particle size is 1-5μm, and the D50 is 2.5μm. The organic vehicle includes an organic binder, a surface dispersant and a thixotropic agent with a mass ratio of 15:1:1. The or...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of N-type solar cells, and discloses silver-aluminum paste for a front fine grid of a high-performance N-type solar cell and a preparation method of the silver-aluminum paste. The silver-aluminum paste for the front fine grid of the high-performance N-type solar cell comprises the following raw materials: conductive silver powder, an organic carrier, glass powder and aluminum powder, and the oxygen content of the aluminum powder is 0.5-1%. The preparation method comprises the following steps of: uniformly mixing and stirring the conductive silver powder, the glass powder, the aluminum powder and the organic carrier; and grinding an obtained mixture to obtain the silver-aluminum paste. According to the silver-aluminum paste for the front fine grid of the high-performance N-type solar cell, the aluminum powder with high oxygen content and proper particle size is added, so that the formation of excessive aluminum-silicon alloy can be inhibited, the open voltage is improved, and the photoelectric conversion efficiency of the solar cell is improved after the solar cell is prepared from the silver-aluminum paste.

Description

technical field [0001] The application relates to the field of N-type solar cells, more specifically, it relates to a silver-aluminum paste for front fine grids of high-performance N-type solar cells and a preparation method thereof. Background technique [0002] As the core part of the solar power generation system, crystalline silicon solar cells have been widely used in various fields, among which, P-type crystalline silicon cells occupy 90% of the crystalline silicon cell market. However, the constant pursuit of efficiency improvement and cost reduction is an eternal theme in the photovoltaic industry. [0003] Compared with conventional P-type crystalline silicon, N-type crystalline silicon has the advantages of high minority carrier lifetime and small light-induced attenuation, and has greater room for efficiency improvement. At the same time, N-type single-crystal modules have the advantages of good weak light response and low temperature coefficient. Therefore, the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B1/16H01B13/00H01L31/0224C03C3/066
CPCH01B1/22H01B1/16H01B13/00H01L31/022425C03C3/066Y02E10/50
Inventor 王海林邵奕兴陶刚义
Owner 浙江奕成科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com