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

A technology of solar cells and compositions, applied in the direction of conductive materials, circuits, photovoltaic power generation, etc. dispersed in non-conductive inorganic materials, can solve problems such as defects, resistance increase, tailing phenomenon printing, etc., and achieve the goal of improving adhesion Effect

Active Publication Date: 2018-10-09
CHANGZHOU JUHE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, when increasing the amount of organic binder, the resistance may also increase during electrode formation, and when high molecular weight organic binders are used, there may still be tailing due to increased viscosity even at high shear rates ( tailingphenomenon) and printing defects

Method used

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

Examples

Experimental program
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Effect test

Synthetic example 1

[0151]Under a nitrogen atmosphere, 50 g of ethyl cellulose (Mw=40,000, Dow Chemical Company) and 3 equivalents of ethyl cellulose having a modified methacryl group at the end (methacryl group) A silicone compound (methacryl-modified silicone, Shin-Etsu Chemical Co., Ltd.) was added to dimethyl sulfoxide (mono twice the weight of the total body weight), and the temperature in the flask was raised to 60° C. while stirring the mixture well. After taking out a predetermined amount of dimethyl sulfoxide, completely dissolve azobisisobutyronitrile (AIBN) (0.1 equivalent based on the total moles of monomers) in it, and pass the solution through the dropping funnel in a dropwise manner Slowly add to flask for radical reaction. When the addition was complete, the reaction was continued at 60° C. for 24 hours under a nitrogen atmosphere. When the reaction was completed, the resultant was repeatedly precipitated in n-hexane three times to remove non-reactants and impurities and filtere...

Synthetic example 2

[0153] Except using a modified silicone compound having an epoxy group at the terminal (epoxy-modified silicone, Shin-Etsu Chemical Co., Ltd.) instead of the modified silicone compound having a methacryl group at the terminal, and Polymer 2 having a weight average molecular weight (Mw) of 55,000 g / mol was obtained in the same manner as in Synthesis Example 1 except that tin(II) 2-ethylhexanoate was used instead of AIBN.

Synthetic example 3

[0155] Polymerization having a weight average molecular weight (Mw) of 47,000 g / mol was obtained according to the same method as in Synthesis Example 1 except that methylmethacrylate was used instead of the modified silicone compound having a methacryl group at the terminal. Object 3.

[0156] Preparation of Compositions for Forming Electrodes

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Abstract

The invention relates to a composition for forming an electrode for a solar cell, the composition including a conductive powder, a glass fit, an organic binder, and a solvent, the organic binder including a cellulose compound that includes a structural unit represented by Chemical Formula 1, manufacture of the electrode of the solar cell using the composition for forming an electrode for a solar cell, and a solar cell including the electrode. The definition of each substituent of Chemical Formula 1 is the same as in the specific embodiment. The compositions for forming the electrode of the present invention has improved print characteristics, dispersibility, and storage stability.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2017-0033217 filed with the Korean Intellectual Property Office on March 16, 2017, the entire contents of which are incorporated herein by reference. technical field [0003] Compositions for forming electrodes, electrodes fabricated using the same, and solar cells are disclosed. Background technique [0004] Solar cells generate electricity using the photovoltaic effect of a p-n junction that converts photons of sunlight into electricity. In a solar cell, front and rear electrodes are respectively formed on the front and rear surfaces 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 electrons generated by the photovoltaic effect of the p-n junction flow to the outside via the electrodes to provide electron flow. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01L31/0224H01L31/068
CPCH01B1/22H01L31/022425H01L31/022458H01L31/068C08G81/00Y02E10/547C03C8/12C03C8/14C08G81/02Y02E10/50
Inventor 文成日
Owner CHANGZHOU JUHE NEW MATERIAL CO LTD
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