Preparation of single or small tube bundle size single-walled carbon nanotube transparent conductive film

A single-walled carbon nanotube, transparent conductive film technology, applied in the direction of carbon nanotubes, nanocarbon, nanotechnology, etc., can solve the problems of unstable chemical doping, the attenuation of the transparent conductive performance of the film over time, and achieve a simple process. , The effect of reducing the probability of collision and reducing the contact resistance

Active Publication Date: 2019-08-23
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In order to improve the conductivity of carbon nanotube films, researchers usually dope them with strong oxidizing acid. However, this chemical doping is very unstable, and the transparent conductive properties of the films decay significantly with time (Reference 4, Jackson R, Domercq B , Jain R, et al.Stability of doped transparent carbon nanotube electrodes[J].Advanced Functional Materials,2008,18(17):2548-2554.)

Method used

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  • Preparation of single or small tube bundle size single-walled carbon nanotube transparent conductive film
  • Preparation of single or small tube bundle size single-walled carbon nanotube transparent conductive film
  • Preparation of single or small tube bundle size single-walled carbon nanotube transparent conductive film

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Effect test

Embodiment 1

[0039] In this embodiment, under the protection of 1000 sccm of argon, the temperature of the reaction furnace is first raised to 1100 ° C, and then 6500 sccm of carrier gas hydrogen and 11 sccm of gas-phase carbon source ethylene are introduced, and the liquid-phase carbon source toluene, catalyst front The mixed solution (mass ratio of 10:0.3:0.045) of body ferrocene and growth promoter thiophene is injected into the reaction furnace at a speed of 0.1 ml / hour, see figure 1 . The single-wall carbon nanotube film grown in the reaction furnace forms a single-wall carbon nanotube film on the porous filter membrane at the lower end of the reactor. Films of varying thickness (light transmittance) are obtained by controlling the collection time and can be dry-transferred onto flexible substrates polyethylene terephthalate (PET), see figure 2 .

[0040] Such as image 3 As shown in (a), scanning electron microscope characterization found that the carbon nanotube film was uniform...

Embodiment 2

[0043] In this embodiment, under the protection of 800 sccm of argon, the temperature of the reaction furnace is raised to 1050° C., and then 7000 sccm of carrier gas hydrogen and 11 sccm of gas-phase carbon source acetylene are introduced, and the liquid-phase carbon source benzyl alcohol, catalyst The mixture of precursor ferrocene and growth promoter sulfur powder (mass ratio 9:0.4:0.05) was injected into the reaction furnace at a rate of 0.2 ml / hour. The single-wall carbon nanotube film grown in the reaction furnace forms a single-wall carbon nanotube film on the porous filter membrane at the lower end of the reactor. Films of different thicknesses (light transmittance) were obtained by controlling the collection time, and could be transferred to the flexible substrate PET by dry method.

[0044] Scanning electron microscope characterization found that the carbon nanotube film was uniform and pure, and transmission electron microscope observation further verified the high ...

Embodiment 3

[0047] In this embodiment, under the protection of 1200 sccm of argon, the temperature of the reaction furnace is first raised to 1150 ° C, and then 7000 sccm of carrier gas hydrogen and 11 sccm of gas-phase carbon source methane are introduced, and the liquid-phase carbon source benzene, catalyst front The mixed solution of body ferrocene and growth promoter thiophene (mass ratio 10:0.35:0.045) was injected into the reaction furnace at a rate of 0.2 ml / hour. The single-wall carbon nanotube film grown in the reaction furnace forms a single-wall carbon nanotube film on the porous filter membrane at the lower end of the reactor. Films of different thicknesses (light transmittance) were obtained by controlling the collection time, and could be transferred to the flexible substrate PET by dry method.

[0048] Scanning electron microscopy showed that the carbon nanotube film was uniform and pure. The transmission electron microscope observation further verified the high purity of ...

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Abstract

The invention belongs to the field of high performance flexible transparent conductive film, and more specifically discloses a controllable preparation method of a single or small tube bundle size single-walled carbon nanotube transparent conductive film. According to the controllable preparation method, floating catalyst chemical vapor deposition method is adopted, carrier gas flow amount is increased, and catalyst concentration is reduced, so that the concentration of single-walled carbon nanotube formed in a reaction zone is reduced, the collision frequency of carbon nanotubes is reduced, the Van der Waals force among tubes is reduced, aggregation into large tube bundles is avoided, and the high quality single-walled carbon nanotubes distributed in single tubes or small ruber bundles are obtained; dry method collecting and transferring technology is adopted, so that the high performance single-walled carbon nanotube transparent conductive film is obtained. The carbon nanotube film of single tubes or small tube bundles is prepared, the contact resistance among the tubes is reduced, formation of large tube bundles is inhibited, adsorption on light is inhibited, the high quality high performance transparent conductive film is obtained, and applications of the high performance flexible transparent conductive film in the field of high performance photovoltaic devices are promoted.

Description

technical field [0001] The invention relates to the field of preparation of high-performance flexible transparent conductive films, in particular to a controllable preparation method of single-walled carbon nanotube transparent conductive films with single or small tube bundle size. Background technique [0002] Transparent conductive films have good light transmission and conductivity at the same time, and have been widely used as electrodes in electronic devices such as solar cells, flat panel displays, and touch screens. At present, the most widely used transparent conductive film is indium tin oxide (ITO). However, due to the limited reserves of the rare metal indium, the cost of ITO is increasing day by day; on the other hand, due to the brittleness of the oxide itself, the performance of the prepared flexible film is not ideal, which cannot meet the development needs of flexible electronic devices. Carbon nanotubes have excellent optical, electrical and mechanical pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/159C01B32/162B82Y40/00
CPCB82Y40/00C01B2202/36C01B2202/34C01B2202/20C01B2202/30Y02E10/549
Inventor 侯鹏翔胡显刚刘畅成会明
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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