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Composition for forming electrode, electrode manufactured using the same and solar cell

A composition and electrode technology, applied to the composition used to form electrodes, can solve problems such as tailing printing, defects, viscosity increase, etc., and achieve the effect of excellent printing characteristics

Active Publication Date: 2017-03-01
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

[0007] However, when the amount of the organic binder is increased, the resistance may also increase during electrode formation, and when an organic binder with a high molecular weight is used, even at a high shear rate, it may suffer from increased viscosity. There are problems of smearing and printing defects

Method used

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  • Composition for forming electrode, electrode manufactured using the same and solar cell
  • Composition for forming electrode, electrode manufactured using the same and solar cell
  • Composition for forming electrode, electrode manufactured using the same and solar cell

Examples

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Effect test

Synthetic example 1

[0111] In a nitrogen atmosphere round bottom flask equipped with a condenser, vinylpyrrolidone (8 equiv), 2-hydroxyethyl methacrylate (2 equiv) were added to dimethylsulfoxide (DMSO) (up to mono twice the total weight of the body), and the mixture was heated up to 60° C. while stirring well. Next, azoisobutyronitrile (AIBN) (0.1 mol%, based on 100 mol% of the total monomer weight) was completely dissolved in dimethyl sulfoxide, and the solution was passed through the dropping funnel in a dropwise manner. was added thereto and reacted at 60° C. for 24 hours under a nitrogen atmosphere. When the reaction was complete, the product was reprecipitated in n-hexane and filtered to obtain a polymer (acryl-based copolymer) having a weight average molecular weight of 130,000 g / mol.

Synthetic example 2

[0113] A polymer (acrylic copolymer) having a weight average molecular weight of 130,000 g / mol was obtained according to the same method as in Synthesis Example 1 except that acrylamide (8 equivalents) was used instead of vinylpyrrolidone (8 equivalents).

Synthetic example 3

[0115] A polymer (acrylic copolymer) having a weight average molecular weight of 130,000 g / mol was obtained according to the same method as Synthesis Example 1 except that vinylpyrrolidone (4 equivalents) was used instead of vinylpyrrolidone (8 equivalents).

[0116] Preparation of Compositions for Forming Electrodes

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Abstract

The invention relates to a composition which can form fine patterns with high resolutions and which has excellent printing characteristics, dispersibility and storage stability for forming an electrode, the electrode manufacturing using the same and a solar cell. The composition for forming the electrode comprises a conductive powder, glass frit, an organic binder and a solvent, wherein the organic binder comprises a polymer comprising a first structural unit and a second structural unit represented by the Chemical Formula 2.The first structural unit is selected from the group consisting of structural units represented by Chemical Formula 1A, the structural unit represented by Chemical Formula 1B and combinations thereof.

Description

technical field [0001] Embodiments relate to compositions for forming electrodes, electrodes made using the same, and solar cells. Background technique [0002] Solar cells generate electricity using 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. Then, the p-n junction is induced to generate a photovoltaic effect by sunlight incident on the substrate, and the electrons generated by the photovoltaic effect of the p-n junction provide a current flowing through the electrodes to the outside. [0003] Electrodes of solar cells may be formed in a predetermined pattern on the surface of a wafer by coating, patterning, and firing an electrode composition. [0004] The conversion efficiency of solar cells is known to be improved by improving the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01L31/0224
CPCH01B1/22H01L31/022425Y02E10/50C08F220/20
Inventor 朴亨锡文成日田桓承
Owner 上海匠聚新材料有限公司
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