Method for synthesizing CsPbBr3 nanocrystal through centrifugal stirring

A technology of nano crystals and centrifuges, applied in the direction of nanotechnology, chemical instruments and methods, luminescent materials, etc., can solve the problems of hidden safety hazards for operators and users, and achieve the effects of convenient operation, industrial production, and cheap raw materials
CN107792877AInactive Publication Date: 2018-03-13SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2018-03-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for synthesizing CsPbBr3 nanocrystal through centrifugal stirring. The method comprises the following steps: dissolving cesium bromide and lead bromide into dimethyl sulfoxide, then transferring to a centrifuge for centrifugation, standing after completion of the centrifugation, removing a supernatant, washing the dimethyl sulfoxide, filtering, and performing vacuum drying to obtain CsPbBr3 nanocrystal powder. The CsPbBr3 nanocrystal synthesized by the method provided by the invention has high fluorescence efficiency, can be unquenched for a long time at high temperature, has a wide application prospect; meanwhile, by the method provided by the invention, a technology is simple, any surface modifier and any toxic solvent are added, environment friendlinessis achieved, raw materials are cheap, operation is convenient, the efficiency is high, and industrial production is facilitated.
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Description

technical field

[0001] The present invention relates to CsPbBr 3 The field of nanocrystal synthesis, specifically related to a centrifugal stirring synthesis of CsPbBr 3 nanocrystal approach. Background technique

[0002] In recent years, halogen perovskite nanocrystals have been widely used in light-emitting diodes, solar cells, displays, lasers and other fields due to their advantages such as narrow emission spectrum, high fluorescence efficiency, strong stability and easy surface modification.

[0003] Currently synthesized CsPbBr 3 Nanocrystals mainly adopt the ligand-assisted precipitation method or supersaturated recrystallization method, that is, the nanocrystals are precipitated through the different solubility of the precursor in different solvents, and then adding surface ligands helps to dissolve and maintain the stability of the nanocrystals, and can also control The size and shape of nanocrystals can be adjusted to obtain quantum dot materials with adjustable...

Claims

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