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Preparation method for haze-adjustable flexible transparent conductive film

A transparent conductive film, flexible technology, applied in the device, ink, special surface and other directions of coating liquid on the surface, can solve the problems of expensive, unfavorable formation of patterns and circuits, and high preparation temperature

Active Publication Date: 2014-07-09
JIANGSU NANOWELL ADVANCED MATERIALS SCI&TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ITO transparent electrodes are generally prepared by vacuum evaporation process, but the material is relatively brittle, the preparation temperature is high, and it is expensive, mainly because it needs to grow scarce indium on the surface
The ITO film is relatively hard, so it is not suitable for flexible components that need to be bent. In addition, the vacuum evaporation process is not conducive to the formation of patterning and circuits, which leads to the use of more expensive photolithography processes if patterning is required.

Method used

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  • Preparation method for haze-adjustable flexible transparent conductive film
  • Preparation method for haze-adjustable flexible transparent conductive film
  • Preparation method for haze-adjustable flexible transparent conductive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Preparation of silver nanowire ink without light scattering medium:

[0034] Add 250g of solvent ethanol to a 500mL three-necked flask with a stirrer, then add a mixture of 30g of epoxy resin adhesive and 100g of acetone, 120g of nano silver wire ethanol solution (the concentration of nano silver wire solution is 2.0%), nano The silver wire has an average diameter of 35nm, an average length of 15μm, and an aspect ratio of over 400. Stir for 30 minutes, and after mixing evenly, the silver nanowire ink is prepared. In the prepared silver nanowire ink, the concentration of silver nanowires is 0.48%.

[0035] 2) Preparation of transparent electrodes and performance testing

[0036] The corona-treated PET was used as a transparent substrate (visible light transmittance 91.8%), and the silver nanowire ink prepared in step 1 was used to form a uniform film layer on the substrate by spin coating. Bake at 150° C. for 30 minutes to cure the polymer adhesive on the surface to...

Embodiment 2

[0038] 1) Preparation of silver nanowire ink:

[0039] Add 200g of solvent ethanol to a 500mL three-necked flask with a stirrer, then add a mixture of 30g of epoxy resin adhesive and 100g of acetone, 50g of methanol solution (concentration of 40%) of nano-silver powder with a diameter of 50nm, nano Silver wire ethanol solution 120g (the concentration of nano silver wire solution is 2.0%), the average diameter of nano silver wire is 35nm, the average length is 15μm, and the aspect ratio exceeds 400. After stirring for 30 minutes, the silver nanowire ink was prepared after mixing evenly. In the prepared silver nanowire ink, the concentration of the silver nanowires was 0.48%, and the concentration of the light scattering medium was 4%.

[0040] 2) Preparation of transparent electrodes and performance testing

[0041] The corona-treated PET was used as a transparent substrate (visible light transmittance 91.8%), and the silver nanowire ink prepared in step 1 was used to form a u...

Embodiment 3

[0043] 1) Preparation of silver nanowire ink:

[0044] Add solvent ethanol 120g in the 500mL there-necked flask with agitator, then add the mixed solution of epoxy resin binder 30g and acetone 100g, 100g diameter is the n-butanol solution of the nanometer copper powder of 100nm (concentration is 40%) ), 150g of nano-silver wire ethanol solution (the concentration of nano-silver wire solution is 2.0%), the average diameter of nano-silver wire is 20nm, the average length is 5μm, and the aspect ratio is 250. After stirring for 30 minutes, the silver nanowire ink was prepared after mixing evenly. In the prepared silver nanowire ink, the concentration of the silver nanowires was 1.2%, and the concentration of the light scattering medium was 8%.

[0045] 2) Preparation of transparent electrodes and performance testing

[0046] Using corona-treated polycarbonate as a transparent substrate (visible light transmittance 91.8%), the silver nanowire ink forms a uniform film layer on the ...

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Abstract

The invention provides a preparation method for a haze-adjustable flexible transparent conductive film. The transparent electrode is a nanometer silver line ink which is composed of a light scattering medium, a nanometer silver line and a high molecular bonder and an organic solvent and is coated on a flexible substrate material; after the ink is baked, a transparent nanometer silver line conductive network is formed on the flexible substrate, and the nanometer silver line conductive network is embedded with the light scattering medium at the same time, so that the flexible transparent conductive film is formed; the haze adjustment of the transparent electrode can be realized finally according to the difference of the parameters such as the type as well as the concentration, the size and the like of the light scattering medium; and the transparent electrode is obtained by coating of the nanometer silver line ink, so that the adjusting of the haze can be realized while good conductivity and high light transmittance are remained. The prepared product not only can be applied to the field of a touch screen and a display panel and the like which require lower haze, but also can satisfy requirement for higher haze of the transparent electrode in the field of a film solar cell panel. Meanwhile, a one-step film forming process is simple and is suitable for roll-to-roll printing.

Description

technical field [0001] The invention relates to the field of transparent electrode materials, in particular to a method for preparing a flexible transparent conductive film with adjustable haze. Background technique [0002] Transparent conductive film refers to a conductive film coated on a surface or substrate with high light transmission. It has good optical transparency and surface conductivity at the same time, and is widely used in products such as liquid crystal displays, touch screens, OLEDs, and thin-film solar cells. [0003] ITO (Indium Tin Oxide) is currently the most widely used transparent conductive film. ITO is an N-type oxide semiconductor-indium tin oxide, and the ITO thin film is an indium tin oxide semiconductor transparent conductive film. The two most critical indicators for evaluating the quality of an ITO thin film are light transmittance and electrical conductivity. In, with Sn-doped In 2 o 3 (ITO) film has the highest transmittance and the best ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/12B05D5/06B05D7/24C09D11/52
Inventor 姜清奎常振宇丁渐宝
Owner JIANGSU NANOWELL ADVANCED MATERIALS SCI&TECH
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