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Composition for forming solar cell electrode and electrode prepared using same

A technology of solar cells and compositions, applied to compounds of elements of group 4/14 of the periodic table, organic silicon compounds, conductive materials dispersed in non-conductive inorganic materials, etc., which can solve the problem of increasing series resistance and reducing electrode cross-sectional area And other issues

Active Publication Date: 2020-11-17
CHANGZHOU JUHE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is possible to reduce shadowing by reducing the electrode line width, simply reducing the electrode line width may result in a decrease in the cross-sectional area of ​​the electrodes and thus increase the series resistance

Method used

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  • Composition for forming solar cell electrode and electrode prepared using same

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0057] To the binder solution was added as an organic binder 0.5 wt% ethyl cellulose fully dissolved in 6.4 wt% lauryl ester (Eastman Chemical Company) at 60°C (STD4, Dow Chemical Company), and 89.0 wt% spherical silver powder (AG-5-11F, Dowa Hightech Co., Ltd.) having an average particle diameter of 2.0 μm ), using the components listed in Table 1 (average particle size: 1.0 μm. Glass transition temperature: 273 ° C) prepared 2.5 wt% Bi-Te-Zn-Li-O-based glass frit, as cyclosilicon 0.8 wt% of hexamethylcyclotrisiloxane (H0725, Tokyo Chemical Industry), 0.4 wt% of dispersant BYK102 (BYK-chemie) and 0.4 wt% of oxane compound Variable agent Thixatrol ST (Elementis Co., Ltd.), followed by mixing and kneading in a 3-roll kneader, thereby preparing a composition for solar cell electrodes.

[0058] Table 1

[0059] Bi 2 o 3

example 2

[0061] A composition for a solar cell electrode was prepared in the same manner as in Example 1, except that octamethylcyclotetrasiloxane (O0142, Tokyo Chemical Industry) was used as the cyclosiloxane compound.

example 3

[0063] A composition for a solar cell electrode was prepared in the same manner as in Example 1, except that decamethylcyclopentasiloxane (D1890, Tokyo Chemical Industry) was used as the cyclosiloxane compound.

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Abstract

The invention provides a composition for a solar battery electrode and an electrode prepared using the same. A composition for a solar cell electrode includes: conductive powder; glass frit; at least one compound selected from a cyclosiloxane compound and a silsesquioxane compound; and an organic vehicle. The electrode of the present invention has a low area change rate after baking and thus can exhibit excellent processability and reliability when used to manufacture electrodes, and has excellent properties such as contact resistance, series resistance, and open circuit voltage after baking. The electrical characteristics also provide high efficiency.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2017-0017907 filed on February 9, 2017, the entire disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates to a composition for solar cell electrodes and electrodes prepared using the same. Background technique [0004] A silicon-based solar cell includes a substrate formed of a p-type silicon semiconductor and an emitter layer formed of an n-type silicon semiconductor. A p-n junction is formed between the p-type substrate and the n-type emitter layer. When sunlight enters a solar cell having such a structure, due to the photovoltaic effect, electrons as a majority carrier are generated in the emitter layer formed of n-type silicon semiconductor, and electrons are generated in the substrate formed of p-type silicon semiconductor. Holes are created in the bottom as majority carriers. Electro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/16H01B1/22H01L31/0224H01L31/04H10K99/00
CPCH01B1/16H01B1/22H01L31/0224H01L31/04H01L31/022425C08G77/045C08K2003/0806C08K2003/0812C08K2003/0831C08K2003/0862C08K2201/001C08L83/04Y02E10/50C08K3/08C08K3/40H01L31/02167H01L31/186C07F7/21H01L31/022466H01B1/24C07F7/0807C08G77/04H01L2031/0344H10K85/40
Inventor 权大灿
Owner CHANGZHOU JUHE NEW MATERIAL CO LTD