Method of forming electrode pattern for solar cell, electrode manufactured using the same and solar cell

A technology for solar cells and electrode patterns, applied in the field of solar cells, can solve the problems of continuous printability deterioration of fine serial resistance patterns, and achieve high resolution, improve printing characteristics, and improve efficiency.

Active Publication Date: 2019-04-23
上海匠聚新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of reducing the line width of electrode patterns using a screen mask with an organic layer leads to an increase in series resistance (Rs) and deterioration of continuous printability of fine patterns.

Method used

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  • Method of forming electrode pattern for solar cell, electrode manufactured using the same and solar cell
  • Method of forming electrode pattern for solar cell, electrode manufactured using the same and solar cell
  • Method of forming electrode pattern for solar cell, electrode manufactured using the same and solar cell

Examples

Experimental program
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Effect test

example 1

[0065] A composition for forming a solar cell electrode was prepared by adding 0.5% by weight of an organic binder (weight average molecular weight = 50,000 g / mol, STD4, Dow Chemical Company) at 60° C. Sufficiently dissolve in 7.5% by weight of butyl carbitol (Dow Chemical Co.) as a solvent, add 88.5% by weight of spherical silver powder (AG-5-11F, Tonghe High-tech Co., Ltd.) with an average particle diameter of 2.0 micrometers Co., Ltd. (Dowa Hightech Co. Ltd.)), 3% by weight of bismuth-tellurium-based lead-free glass powder with an average particle diameter of 1.0 μm (ABT-1, Asahi Glass Co., Ltd. )), 0.2% by weight of dispersant (BYK-102, BYK-Chemie (BYK-Chemie)), and 0.3% by weight of thixotropic agent (Thixatrol (Thixatrol) ST, Elementis (Elementis) Co.)), and disperse it with a three-roll machine. The composition for forming a solar cell electrode was coated on a polyethylene terephthalate (PET) film, and after distilled water was dropped thereon, a contact angle measuri...

example 2

[0067] Except using 7.5% by weight of butyl carbitol acetate (Dow Chemical Company) instead of butyl carbitol (Dow Chemical Company) as solvent, prepared according to the same method as Example 1. A composition for forming a solar cell electrode, wherein the water contact angle is 20 degrees when measured according to the same method as in Example 1.

example 3

[0069] Except using 7.5% by weight of butyl carbitol acetate (Dow Chemical Co.) Powder (AG-4-8F, Tonghe High-Tech Co., Ltd.) replaces the spherical silver powder (AG-5-11F, Tonghe High-Tech Co., Ltd.) with an average particle diameter of 2.0 microns, prepared according to the same method as Example 1 A composition for forming a solar cell electrode according to Example 3, wherein the water contact angle was 30 degrees when measured according to the same method as Example 1 was obtained.

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Abstract

Provided are a method of forming an electrode pattern for a solar cell, an electrode manufactured using the same, and a solar cell. The method of forming an electrode pattern for a solar cell includespreparing a composition for forming a solar cell electrode including a conductive powder, a glass frit, an organic binder, and a solvent, and coating the composition for forming a solar cell electrode on a screen mask with an organic layer followed by drying and firing the same, wherein a difference of water contact angles of the composition for forming a solar cell electrode and the screen maskwith the organic layer ranges from 40 degrees to 60 degrees.

Description

technical field [0001] The invention discloses a method for forming an electrode pattern of a solar cell, an electrode manufactured using the method, and a solar cell. Background technique [0002] A solar cell generates electricity by utilizing the photovoltaic effect of a p-n junction that converts photons of sunlight into electricity. In a solar cell, a front electrode and a rear electrode are respectively formed on a front surface and a rear surface of a semiconductor substrate (semiconductor wafer) having a p-n junction. The photovoltaic effect of the p-n junction is induced by sunlight entering the substrate, and the electrons generated by the photovoltaic effect of the p-n junction provide current to the outside through the electrodes. [0003] The electrode of the solar cell can form a predetermined pattern on the surface of the substrate by coating the electrode composition on a screen mask, followed by drying and firing. [0004] It is known that the conversion e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/0216H01L31/18
CPCH01L31/022425Y02E10/50H01L31/02167H01L31/022441H01L31/186
Inventor 文成日朴亨锡崔振佑
Owner 上海匠聚新材料有限公司
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