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A kind of high-haze flexible transparent conductive film and preparation method thereof

A transparent conductive film, high haze technology, used in cable/conductor manufacturing, conductive layers on insulating carriers, circuits, etc., can solve problems such as high price, increased resistance, toxicity, etc. Simple preparation process

Active Publication Date: 2017-01-25
兰州博林化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Transparent conductive film has a high light transmittance in the visible light region and has excellent conductivity. It is an important photoelectric functional film and is widely used in flat panel displays, solar cells, organic light-emitting diodes, touch screens and other optoelectronic devices. With the improvement of performance, low cost, and flexibility, photoelectric components have higher requirements for the performance of transparent conductive films; at present, indium tin oxide (ITO) is the most widely used in the market, and ITO has high The high light transmittance and low resistance make it widely used in optoelectronics, but the traditional ITO cannot meet the current demand for low-cost flexibility, because the content of indium on the earth is small, the price is high, and Toxic, and the ITO film is brittle, and the resistance increases when it is bent under force, which cannot meet the development requirements of flexible display technology

Method used

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  • A kind of high-haze flexible transparent conductive film and preparation method thereof
  • A kind of high-haze flexible transparent conductive film and preparation method thereof
  • A kind of high-haze flexible transparent conductive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Mix 10g of polyvinyl alcohol (PVA) and 90g of deionized water, and prepare under heating and stirring

[0032] Go out the PVA sol that mass fraction is 10%wt.

[0033] (2) PET was selected as the flexible transparent substrate, and PVA colloid was coated on the substrate by rod coating method with a thickness of 10 μm, and dried at 100 °C.

[0034] (3) Dissolve 0.05g of silver nanowires in 50mL of absolute ethanol, and ultrasonically disperse for 30min to obtain a mixed suspension.

[0035] (4) Fix the flexible substrate on the mechanical arm of the lifting machine, the dipping speed is 100mm / min, the residence time of the substrate in the silver nanowire suspension is 20s, the lifting speed is 40mm / min, and the static The setting time was 15s, and the number of repetitions was 4 times.

[0036] (5) After the impregnation process is completed, dry the film together with the substrate at 100°C to obtain a flat and uniform conductive film of silver nanowires.

[00...

Embodiment 2

[0041] (1) Weigh 5g of polyvinyl alcohol (PVA) into a beaker containing 95g of water, and make it under heating and stirring

[0042] A PVA sol with a mass fraction of 5%wt was prepared.

[0043] (2) PET is selected as the flexible transparent substrate, and the PVA colloid is coated on the substrate by spin coating, the thickness

[0044] to 100 nm and dried at 80°C.

[0045] (3) Dissolve 0.025g of silver nanowires in 50mL of absolute ethanol, and ultrasonically disperse for 30min to obtain a mixed suspension.

[0046] (4) Fix the flexible substrate on the mechanical arm of the lifting machine, the dipping speed is 90mm / min, and the substrate is

[0047] The residence time in the silver nanowire suspension is 15s, the pulling speed is 50mm / min, and the standing time after pulling is

[0048] 15s, repeat 5 times.

[0049] (5) After the impregnation process is completed, dry the film together with the substrate at 90°C to obtain a flat and uniform conductive film of silver ...

Embodiment 3

[0054] (1) Weigh 5g of polyvinyl alcohol (PVA) into a beaker containing 95g of water, and make it under heating and stirring

[0055] A PVA sol with a mass fraction of 5%wt was prepared.

[0056] (2) PET is selected as the flexible transparent substrate, and the PVA colloid is coated on the substrate by spin coating, with a thickness of

[0057] 5 μm and dried at 80°C.

[0058] (3) Dissolve 0.1g of silver nanowires in 50mL of absolute ethanol, and ultrasonically disperse for 30min to obtain a mixed suspension.

[0059](4) Fix the flexible substrate on the mechanical arm of the lifting machine, the dipping speed is 80mm / min, and the substrate is

[0060] The residence time in the silver nanowire suspension is 30s, the pulling speed is 40mm / min, and the standing time after pulling is

[0061] 30s; repeat 5 times.

[0062] (5) After the impregnation process is completed, dry the film together with the substrate at 100°C to obtain a flat and uniform

[0063] Conductive film o...

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Abstract

The invention relates to the technical field of preparation of transparent conductive films, particularly to a high-haze flexible transparent conductive film and a preparation method thereof. The conductive film includes a flexible transparent substrate, the surface of the flexible transparent substrate is coated with a transparent PVA colloid layer, and the surface of the colloid layer is a conductive layer containing silver nanowires. The preparation method is that: PVA sol is coated on a flexible transparent substrate, and silver nanowires form a uniform transparent conductive film on the processed substrate. The square resistance of the prepared transparent conductive film provided by the invention is not larger than 90 ohm / sq, the transmittance of visible light is not larger than 85%, the optical haze is not larger than 10%, and the transparent conductive film is applicable to a solar cell transparent electrode. The preparation technology is simple and is easy to operate, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of preparation of transparent conductive films, in particular to a high-haze flexible transparent conductive film and a preparation method thereof. Background technique [0002] Transparent conductive film has a high light transmittance in the visible light region and has excellent conductivity. It is an important photoelectric functional film and is widely used in flat panel displays, solar cells, organic light-emitting diodes, touch screens and other optoelectronic devices. With the improvement of performance, low cost, and flexibility, photoelectric components have higher requirements for the performance of transparent conductive films; at present, indium tin oxide (ITO) is the most widely used in the market, and ITO has high The high light transmittance and low resistance make it widely used in optoelectronics, but the traditional ITO cannot meet the current demand for low-cost flexibility, because the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14H01B13/00
Inventor 沈湘黔陈翠玉景茂祥李旻
Owner 兰州博林化工科技有限公司