Gold nanoparticle thin film wrapped by organic ligand and field electron emission device of gold nanoparticle thin film

A gold nanoparticle, organic ligand technology, applied in nanotechnology, nanotechnology, nanostructure manufacturing and other directions, can solve the problems of poor emission electron monochromaticity, difficult to self-assemble monolayer film in large area, complicated preparation conditions, etc. Large emission area, convenient preparation method, and good monochromatic performance
CN104176701AActive Publication Date: 2014-12-03SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
Publication Date
2014-12-03

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Abstract

The invention provides a gold nanoparticle thin film wrapped by an organic ligand and a field electron emission device of the gold nanoparticle thin film. The gold nanoparticle thin film has a superlattice structure taking gold nanoparticles wrapped by the organic ligand and of 1.3-1.7nm in particle diameter as elements. Electrons are provided through the gold nanoparticles, electron emission is enhanced through the organic ligand with low electron affinity, and the gold nanoparticle thin film is taken as an electron emission source to emit electron beams which are uniform, high in strength and quasi-monochromatized under low voltage bias. The gold nanoparticle thin film has the advantages of large emission area, high emission strength, good monochromatic performance and the like; expensive vacuum equipment is not needed, so that a preparation method is economical, convenient and quick.
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Description

technical field

[0001] The invention relates to an organic ligand-wrapped gold nano particle film and a field electron emission device thereof. Background technique

[0002] The phenomenon of electron emission is widely used in various fields of social life, from radio communication, X-ray tube, TV, microwave equipment to electron exposure machine, electron microscope, evaporation coating equipment, etc., are closely related to the phenomenon of electron emission. At present, commonly used electron emission sources are mainly divided into thermal emission electron sources and field emission electron sources. Thermal emission electron sources mainly include tungsten filament and LaB 6 Crystals, etc., the monochromaticity of the electrons emitted by them is relatively poor (the energy divergence is usually 1.5-2.3eV), and has the disadvantages of slow response, high energy consumption, and difficulty in integration, which greatly limits the application in the field of electro...

Claims

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