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Transparent conductive film and preparation method of transparent conductive film

A technology of transparent conductive film and conductive layer, which is applied to conductive layers on insulating carriers, semiconductor/solid-state device manufacturing, circuits, etc., can solve the problems of high production cost of carbon nanotubes, limited practical application, etc. The effect of strong sex and good application prospect

Inactive Publication Date: 2012-07-11
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent 200810178974.3 invented a transparent conductive film composed of carbon nanotubes and indium tin oxide composite materials, but the high production cost of carbon nanotubes limits its practical application

Method used

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  • Transparent conductive film and preparation method of transparent conductive film
  • Transparent conductive film and preparation method of transparent conductive film
  • Transparent conductive film and preparation method of transparent conductive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment is used to prepare a-type transparent conductive film.

[0041] (1) Graphene oxide was prepared by chemical oxidation: 5 g of graphite and 4 g of sodium nitrate (analytical pure) were added to the flask, and then 300 mL of concentrated sulfuric acid (analytical pure) was added. Stir the flask at 0°C (ice-water bath), and slowly add 22.5g of potassium permanganate (analytical pure) within 1h, then keep it at 0°C for 4h, then raise the temperature to 35°C, and continue stirring for 5 days , the reaction solution changed from dark green to dark brown viscous liquid. Under the condition of stirring, the reacted liquid was slowly added into 500mL of water, then the temperature was raised to 95°C and stirring was continued at this temperature for 30min, and then the temperature was lowered to 60°C. Add 30 mL of hydrogen peroxide (aqueous solution with a mass concentration of 10%), continue to stir and react for 2 h, and then cool down to room temperature. Th...

Embodiment 2-10

[0048] This embodiment is used to prepare a-type transparent conductive film.

[0049] The a-type transparent conductive films P2-P10 were prepared according to the method of Example 1. Conditions and characterization results are shown in Table 1, C / MO represents the weight ratio of graphene and metal oxide, C concentration represents the concentration of graphene, and MO concentration represents the concentration of metal oxide, where the unit of concentration is mg / mL , the unit of sheet resistance is Ω / sq; the processing conditions used for spin-coating each layer are spin-coating at 25°C with a spin coater at a speed of 2000r / min for 60 seconds, drying at 80°C for 40min, and then drying at 140°C for 10min ; After 90-degree bending test, after bending 500 times, the conductivity of P2-P10 has no obvious change.

Embodiment 11-20

[0051] This embodiment is used to prepare a-type transparent conductive film.

[0052] The a-type transparent conductive films P11-P20 were prepared according to the method of Example 1. Conditions and characterization results are shown in Table 1, C / MO represents the weight ratio of graphene and metal oxide, C concentration represents the concentration of graphene, and MO concentration represents the concentration of metal oxide, where the unit of concentration is mg / mL , the unit of sheet resistance is Ω / sq; the processing conditions for spin-coating each layer are: use a spin coater at 2000r / min speed for 60 seconds at 25°C, dry at 120°C for 20min, and then dry at 160°C 2min; After 90-degree bending test, after bending 500 times, the conductivity of P11-P20 has no obvious change.

[0053] Table 1

[0054]

[0055] It can be seen from Table 1 that the transparent conductive film of the present invention has high light transmittance.

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Abstract

The invention provides a transparent conductive film, which is characterized in that the transparent conductive film comprises a transparent substrate layer and a conductive layer attached onto the substrate layer. The conductive layer contains graphene and metal oxide, and has a sheet resistance of 0.1-5000 Omega / sq, and light transmittance of 60-95% in a visible light region. The inventive graphene and metal oxide-based transparent conductive film has better light transmittance and conductivity compared with a single graphene-based transparent conductive film, has better bending resistance compared with a single metal oxide-based transparent conductive film, and can be used as a flexible transparent electrode.

Description

technical field [0001] The invention relates to a transparent conductive film and a preparation method thereof. Background technique [0002] Due to their excellent optoelectronic properties, transparent conductive films are widely used in various optoelectronic devices. At present, the main application fields are: used as electrode materials in touch screens, solar cells, electroluminescent (EL) devices, flat liquid crystal displays (LCD) and electrochromic display devices (ECD), etc.; transparent conductive films on flexible substrates The development has expanded the potential use of transparent conductive films to the manufacture of flexible light-emitting devices, plastic liquid crystal displays, solar cells, and as thermal insulation materials for plastic greenhouses, glass adhesive films, etc. [0003] Common transparent conductive films are composed of doped metal oxides such as indium oxide, tin oxide, and zinc oxide. Currently, tin-doped indium oxide ITO (In 2 o ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14H01L51/52
Inventor 智林杰罗彬梁明会王杰邱腾飞
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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