Light-emitting amorphous silicon carbide nanoparticle preparation method

Abstract

The present invention relates to a light-emitting amorphous silicon carbide nanoparticle preparation method, and belongs to the technical field of photoelectric materials. The method is mainly characterized in that the silicon carbide polycrystalline ceramic sheet surface is subjected to a polishing treatment, focusing is performed onto the polycrystalline ceramic sheet immersed in deionized water by using excimer pulse laser, and during the irradiation process, a three-dimensional controllable platform carries a beaker to slowly translate so as to make the laser irradiation position on the ceramic sheet be continuously changed, such that finally the amorphous silicon carbide nanoparticles suspended in the deionized water and having the diameter of about 10 nm is obtained, wherein the surface is hydrophilic so as to ensure that the amorphous nanoparticles can be stably suspended in the ionized water and do not produce settling. In addition, the amorphous silicon carbide nanoparticles have strong and stable blue light emission, and have good application prospects in the fields of photoelectricity and biomedicine.

Description

Technical field [0001] The invention relates to a method for preparing luminescent amorphous silicon carbide nanoparticles. The amorphous silicon carbide nanoparticles prepared by the method have a diameter of about 10 nm and have high-intensity and stable blue light emission, belonging to the technical field of photoelectric materials. Background technique [0002] Amorphous silicon carbide SiC nanomaterials exhibit a series of unique properties due to their unique morphology and electronic structure. The electronic structure of amorphous SiC is completely different from that of crystallized SiC nanomaterials, and the related physical properties of amorphous SiC are tunable to a certain extent. Nowadays, the most researched is amorphous SiC film, which has broad application prospects in the fields of electronics and optoelectronics, such as solar cells, light-emitting diodes, color sensors, high-temperature engineering materials, and large-area electroluminescent devices. There...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing luminescent amorphous silicon carbide nanoparticles, which solves the problem of using microwave plasma-induced decomposition of tetramethylsilane in a low-temperature and low-pressure plasma reactor to prepare it in a gas-phase and flowing environment. The preparation process of amorphous SiC nanoparticles with a diameter of less than 10nm is too complicated, and the amorphous silicon carbide nanoparticles prepared by the present invention have a diameter of about 10nm and have strong and stable blue light emission

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