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Method for preparing zinc oxide nano-layer structure on supportless carbon nano-tube film

A carbon nanotube film and zinc oxide nanotechnology, which is applied in the field of optoelectronic materials, can solve the problems of complex manufacturing process, unbending, difficult cutting, etc., and achieve the effects of simple manufacturing process, low turn-on electric field, and improvement of field emission current density.

Inactive Publication Date: 2009-10-21
EAST CHINA NORMAL UNIV
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Problems solved by technology

On the other hand, many scholars have done a lot of research on the structure of combining carbon tubes and zinc oxide before. However, the previous structures all used the method of screen printing, using silicon wafers as the substrate, and the manufacturing process was complicated and costly. Not bendable, difficult to cut

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  • Method for preparing zinc oxide nano-layer structure on supportless carbon nano-tube film

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Embodiment Construction

[0015] See attached figure 1 , the present invention uses thermal evaporation to uniformly attach zinc oxide to the film of unsupported carbon nanotubes to form a zinc oxide nanolayer structure, specifically comprising the following steps:

[0016] a, horizontal tube furnace 1 is made up of two different quartz tubes (2), (3) and electric heating furnace wire (4) of radius, and its length of the quartz tube (2) of large diameter is 110cm, and diameter is 8cm; The length of the quartz tube (3) is 140cm, and the diameter is 4cm. The quartz tube (3) of small diameter is inserted into the bottom of the large diameter quartz tube (2), and its carrier gas port (5) is connected to nitrogen, and the electric heating furnace wire (4 ) is wound outside the large-diameter quartz tube (2) and connected to the power supply. The horizontal tube furnace 1 is placed horizontally and preheated to 850 °C at a rate of 15 °C / min. The test is carried out in the small-diameter quartz tube (3). Nit...

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Abstract

The invention discloses a method for preparing a zinc oxide nano-layer structure on a supportless carbon nano-tube film, which is characterized in that zinc oxide is evenly attached to the supportless carbon nano-tube film to form the zinc oxide nano-layer structure through thermal evaporation by using nitrogen as carrier gas, wherein the zinc oxide nano-layer has a needle-like structure; the length thereof is 1mu m; and the particle size of zinc oxide particles is about 100 nanometers. The method improves the field emission characteristic of a carbon tube, improves the field emission performance and increases the field emission current density with lower turn-on electric field and good emission stability; and compared with the prior art, the method has the advantages of simple manufacturing process, low cost and good repeatability, is particularly suitable for large-area manufacture, and can perform kinking and clipping.

Description

technical field [0001] The invention relates to the technical field of optoelectronic materials, in particular to a method for preparing a zinc oxide nanolayer structure on an unsupported carbon nanotube film. Background technique [0002] Since the discovery of carbon nanotubes, one of the most notable applications triggered by their unique structural characteristics is the production of carbon nanotube field emission displays. However, low brightness and poor uniformity have always plagued the development of carbon nanotube field emission displays. It is generally considered that high field enhancement factor and low work function are the dominant factors to win excellent field emission characteristics. ZnO is a wide bandgap semiconductor with large exciton binding energy, which has great application prospects in optoelectronic devices, and because of its special properties such as thermal stability, high mechanical strength and chemical stability, it has attracted much at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/24C23C14/08
Inventor 白丹郁可朱自强张志吴玮张正犁
Owner EAST CHINA NORMAL UNIV
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