Array nanotube, mfg. method and use thereof

A nanotube and array technology, applied in the field of array nanotubes, can solve the problems of complex pretreatment process, can not effectively improve electrical and mechanical properties, etc., and achieve excellent field emission performance, easy operation, and good reproducibility.

Inactive Publication Date: 2003-03-12
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have many disadvantages: (1) need complex preprocessing
(3) The highest nitrogen content of carbon nitride nanotubes is less than 7%, which cannot effectively improve their electrical and mechanical properties

Method used

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  • Array nanotube, mfg. method and use thereof
  • Array nanotube, mfg. method and use thereof
  • Array nanotube, mfg. method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1 as figure 1 The device (the tubular electric furnace is produced by Beijing Electric Furnace Factory, the model is SK 2 As shown in -4-13), put a 4×2 cm n-type monocrystalline silicon wafer into the middle of the quartz tube, connect the gas distribution system, feed ammonia gas at a flow rate of 40 ml per minute, and set the temperature at 900 ℃, the electric furnace is heated up, and when the furnace body center temperature reaches 900 ℃, a quartz boat (5 milliliters) filled with 0.5 gram of iron phthalocyanine is put into the area where the furnace mouth temperature is 550 ℃, and after constant temperature for 5 minutes, stop heating. Change the hydrogen gas of 20 milliliters per minute to bring the electric furnace to room temperature. Carbon nitride nanotubes with a diameter of 80 nanometers, a length of 9 micrometers, and a nitrogen content of 9% were prepared with regular arrays and uniform sizes. The length and purity of the nanotubes were determined...

Embodiment 2

[0026] Example 2 According to the preparation method of Example 1, except that the mass of iron phthalocyanine was increased from 0.5 g to 1 g, an array of carbon nitride nanotubes with a diameter of 120 nanometers, a length of 90 microns, and a nitrogen content of 9% was prepared.

Embodiment 3

[0027] Example 3 According to the preparation method of Example 1, except that the constant temperature time is increased from 5 minutes to 10 minutes, an array of carbon nitride nanotubes with a diameter of 100 nanometers, a length of 100 micrometers, and a nitrogen content of 9% is prepared.

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Abstract

A carbon nitride nanotube array used for field emission device can be directly grown on the substrate. Its diameter is 20-200 nm. Its length is 1-100 microns. Its N content is 0.5-9%. Its initial emissino field is 1.5-5 V/micron.

Description

Technical field: [0001] The invention relates to a nanometer material, in particular to an array nanotube, and also relates to its preparation method and its application on a field emission device. Background technique: [0002] Due to its unique electrical and mechanical properties, carbon nanotubes have gradually become a potential special functional and device material that has been widely concerned by scientists. Theoretical and experimental studies have shown (1. Hamada, N.; Sawada, S.; Oshiyama, A. Phys. Rev. Lett. 1992, 68, 1579.2. Odom, T.W.; Huang, J.-L.; Kim, P. ; Lieber, C.M.J.Phys.Chem.B 2000, 104, 2794.), according to its helicity and diameter, carbon nanotubes can exhibit a series of different electrical properties from metals to semiconductors. According to the current technical level and preparation methods, it is difficult to obtain a carbon nanotube material with uniform structure and monodisperse performance. Therefore, the same batch of carbon nanotubes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/082C01B31/00H01L21/365
Inventor 刘云圻王贤保朱道本
Owner INST OF CHEM CHINESE ACAD OF SCI
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