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Particle-free conductive ink as well as preparation method and application thereof

A conductive ink, particle-free technology, used in applications, inks, circuits, etc., can solve problems such as electrodes that are not suitable for photovoltaic cells, and achieve the effect of reducing the amount of silver used

Active Publication Date: 2022-02-11
CHANGZHOU SHICHUANG ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing silver-free conductive ink is difficult to form a metallized connection with silicon, so it is not suitable for the preparation of electrodes for photovoltaic cells

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1) Dissolve nickel nitrate in deionized water to form a uniform solution;

[0042] 2) Dissolve NaOH in deionized water, then add neodecanoic acid, and react to form sodium neodecanoate;

[0043] 3) Slowly add the solution obtained in step 1) to the solution obtained in step 2), add toluene, and react in an ice-water bath with a reaction temperature of 5°C and a reaction time of 2 hours;

[0044] 4) The solution obtained in step 1) was left to stand for 4 hours, and after layering, the upper water layer was removed through a separatory funnel to obtain particle-free nickel neodecanoate;

[0045] 5) Weigh 70 parts by weight of the particle-free sodium neodecanoate obtained in step 4), 20 parts by weight of terpineol, and 10 parts by weight of ethyl cellulose, and mix them uniformly to obtain a particle-free conductive ink with a viscosity of 3000 cps;

[0046] 6) Use the particle-free conductive ink obtained in step 5) to inkjet print the silicon wafer used to prepare phot...

Embodiment 2

[0050] 1) Dissolve cobalt nitrate in deionized water to form a homogeneous solution;

[0051] 2) Dissolve NaOH in deionized water, then add citric acid, and react to form cobalt citrate;

[0052] 3) Slowly add the solution obtained in step 1) to the solution obtained in step 2), add toluene, and react in an ice-water bath with a reaction temperature of 5°C and a reaction time of 2 hours;

[0053] 4) The solution obtained in step 1) was left to stand for 4 h, and after layering, the upper water layer was removed through a separatory funnel to obtain particle-free cobalt citrate;

[0054] 5) Weigh 70 parts by weight of the particle-free cobalt citrate obtained in step 4), 20 parts by weight of diethylene glycol monobutyl ether, and 10 parts by weight of polyvinyl alcohol, and mix them uniformly to obtain a particle-free conductive ink with a viscosity of 4000 cps;

[0055] 6) Use the particle-free conductive ink obtained in step 5) to inkjet print the silicon wafer used to prep...

Embodiment 3

[0059] 1) Dissolve titanium nitrate in deionized water to form a uniform solution;

[0060] 2) Dissolve KOH in deionized water, then add malic acid, and react to form titanium malate;

[0061] 3) Slowly add the solution obtained in step 1) to the solution obtained in step 2) dropwise, add toluene, and react in an ice-water bath with a reaction temperature of 10°C and a reaction time of 5 hours;

[0062] 4) The solution obtained in step 1) was left to stand for 3 hours, and after layering, the upper water layer was removed through a separatory funnel to obtain particle-free titanium malate;

[0063] 5) Weigh 70 parts by weight of the particle-free titanium malate obtained in step 4), 20 parts by weight of diethylene glycol monoethyl ether, and 10 parts by weight of hydroxyethyl cellulose, and mix them uniformly to obtain a particle-free conductive ink with a viscosity of 5000 cps;

[0064] 6) Use the particle-free conductive ink obtained in step 5) to inkjet print the silicon ...

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Abstract

The invention discloses particle-free conductive ink as well as a preparation method and application thereof. The particle-free conductive ink is prepared from the following components in parts by weight: 50-70 parts of an organic X precursor, 5-30 parts of a solvent and 5-20 parts of an organic carrier, wherein X is selected from one of nickel, cobalt, titanium and molybdenum. The conductive ink disclosed by the invention is suitable for preparing an electrode of a photovoltaic cell through ink-jet printing; and the conductive ink does not contain silver, so that the silver consumption in the photovoltaic cell preparation process can be reduced. The conductive ink does not contain nanoscale metal particles, cannot block a printing nozzle, and solves the problems that metal particles of existing conductive ink are difficult to disperse, are easy to settle after being stored for a long time and block the printing nozzle.

Description

technical field [0001] The invention relates to conductive ink, in particular to a particle-free conductive ink and its preparation method and application. Background technique [0002] The electrodes of existing photovoltaic cells are generally formed by screen printing silver paste and sintering. In order to improve the preparation efficiency of the electrode and reduce the production cost, it is an option to prepare the electrode of the photovoltaic cell by inkjet printing technology. Inkjet printing technology is to print conductive ink on the surface of silicon wafers, print electrode patterns on silicon wafers, and then sinter to form metal electrodes. [0003] However, the existing conductive ink generally uses nano-silver particles, and nano-scale metal particles are extremely difficult to disperse, and it is easy to block the print nozzle during inkjet printing, which will affect the preparation of electrodes. [0004] In addition, in order to reduce the amount of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/30C09D11/36H01L31/0224
CPCC09D11/52C09D11/30C09D11/36H01L31/022425Y02E10/50
Inventor 陈萌杨立功
Owner CHANGZHOU SHICHUANG ENERGY CO LTD
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