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A kind of manufacturing method of low surface roughness transparent electrode

A manufacturing method and technology of transparent electrodes, applied in cable/conductor manufacturing, equipment for manufacturing conductive/semiconductive layers, circuits, etc., can solve problems such as reducing luminous efficiency, device short circuit, affecting preparation quality, etc., and achieve photoelectric performance Excellent, performance-enhancing, and preparation-quality effects

Active Publication Date: 2022-02-18
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Screen printing technology has shown great advantages in the preparation of low-cost, large-area, patterned films. In the prior art, the patterned metal nanostructures of transparent electrodes are formed by screen printing directly on the substrate material. For patterned metal nanostructures, how to reduce the roughness of the screen printing pattern is still a challenging problem. The surface roughness of the electrode will have a great impact on the preparation of subsequent functional layers and the final device performance, such as the electrodes of light-emitting diodes. On top of that, it is necessary to further prepare the hole transport layer, light emitting layer, electron transport layer, etc. If the surface roughness of the electrode is high, it will affect the preparation quality of the upper functional layers, eventually reduce the luminous efficiency, and even cause a short circuit of the device.

Method used

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  • A kind of manufacturing method of low surface roughness transparent electrode
  • A kind of manufacturing method of low surface roughness transparent electrode
  • A kind of manufacturing method of low surface roughness transparent electrode

Examples

Experimental program
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Embodiment 1

[0025] 1) Coating a layer of smooth silver nanowire film with a thickness of 0.3 μm on the PET substrate by knife coating technology, and drying at 120°; 2) Printing on the upper layer of the silver nanowire film by screen printing technology Silver nanowire grid, the grid side length is 3.5mm, the grid thickness is 1μm, and it is dried at 120°; 3) A layer of silver nanowire + poly 3,4 is scraped on the upper layer of the silver nanowire grid -Composite conductive material of ethylene dioxythiophene / polystyrene sulfonate PEDOT:PSS+nonionic surfactant long-chain fatty alcohol polyoxyethylene ether, with a thickness of 0.2 μm, wherein the mass ratio of silver nanowires to PEDOT:PSS 0.4:1, and drying at 120°; 4) Apply liquid PDMS evenly to the upper layer of the composite conductive material, and undergo vacuum defoaming and heat curing to make the PDMS form a solid film; 5) Remove the PDMS substrate from The PET substrate was peeled off to obtain a transparent conductive electro...

Embodiment 2

[0028] 1) Coating a layer of smooth silver nanowire film with a thickness of 0.3 μm on the PET substrate by knife coating technology, and drying at 120°; 2) Printing on the upper layer of the silver nanowire film by screen printing technology Silver nanowire grid, the grid side length is 3mm, the grid thickness is 1μm, and it is dried at 120°; 3) A layer of silver nanowire + poly 3,4- is scraped on the upper layer of the silver nanowire grid The composite conductive material of ethylenedioxythiophene / polystyrene sulfonate PEDOT:PSS+nonionic surfactant long-chain fatty alcohol polyoxyethylene ether has a thickness of 0.2 μm, wherein the mass ratio of silver nanowires to PEDOT:PSS is 0.4:1, and drying at 120°; 4) Apply liquid PDMS evenly to the upper layer of the composite conductive material, and undergo vacuum defoaming and heat curing to make the PDMS form a solid film; 5) Remove the PDMS substrate from the PET The substrate was peeled off to obtain a transparent conductive e...

Embodiment 3

[0031] 1) Coating a layer of smooth silver nanowire film with a thickness of 0.3 μm on the PET substrate by knife coating technology, and drying at 120°; 2) Printing on the upper layer of the silver nanowire film by screen printing technology Silver nanowire grid, the grid side length is 2mm, the grid thickness is 1μm, and it is dried at 120°; 3) A layer of silver nanowire + poly 3,4- is scraped on the upper layer of the silver nanowire grid The composite conductive material of ethylenedioxythiophene / polystyrene sulfonate PEDOT:PSS+nonionic surfactant long-chain fatty alcohol polyoxyethylene ether has a thickness of 0.2 μm, wherein the mass ratio of silver nanowires to PEDOT:PSS is 0.4:1, and drying at 120°; 4) Apply liquid PDMS evenly to the upper layer of the composite conductive material, and undergo vacuum defoaming and heat curing to make the PDMS form a solid film; 5) Remove the PDMS substrate from the PET The substrate was peeled off to obtain a transparent conductive e...

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Abstract

The invention provides a method for manufacturing a transparent electrode with low surface roughness, specifically a method for preparing a large-area, low-cost, patterned transparent electrode by using screen printing technology, and the key point is to solve the problem of high roughness of the screen printing pattern Problem, low surface roughness is obtained by first coating a smooth conductive material on the substrate, then screen printing conductive patterns, and finally coating a layer of surfactant-modified composite conductive material and performing thin film transfer transparent electrodes. The transparent electrode prepared by this method maintains the smooth surface of the original substrate after peeling off, has extremely low surface roughness, and significantly improves the transfer success rate of the film, and can be directly applied to various optoelectronic devices, such as solar cells, light emitting Diodes, flat panel displays, and electronic sensors.

Description

technical field [0001] The invention relates to a method for manufacturing a transparent electrode with low surface roughness, which belongs to the field of new generation information technology industry. Background technique [0002] With the rapid development of solar cells, light-emitting diodes, flat panel displays, and electronic sensors, transparent electrodes are required to have low cost, high electrical conductivity, high light transmittance, and low surface roughness. Screen printing technology has shown great advantages in the preparation of low-cost, large-area, patterned films. In the prior art, the patterned metal nanostructures of transparent electrodes are formed by screen printing directly on the substrate material. For patterned metal nanostructures, how to reduce the roughness of the screen printing pattern is still a challenging problem. The surface roughness of the electrode will have a great impact on the preparation of subsequent functional layers and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14H01B13/00
CPCH01B5/14H01B13/0026H01B13/0016
Inventor 李东东
Owner NANJING UNIV OF POSTS & TELECOMM