Ultrasonic preparation method of blue-light inorganic bromine-lead-cesium perovskite nanoparticles

A nanoparticle, bromine, lead, and cesium technology, which is applied in the field of perovskite luminescent nanoparticle preparation, can solve the problems of difficult large-scale synthesis and high-temperature heating, and achieve the effects of no high-temperature heating, uniform size, and simple synthesis steps

Active Publication Date: 2021-03-16
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0006] In view of the above problems, the present invention provides an ultrasonic preparation method of blue-light inorganic bromine-lead-cesium perovskite nanoparticles, which is used to at least partially solve the technical problems of traditional methods that require high temperature heating and are difficult to synthesize in large quantities.

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  • Ultrasonic preparation method of blue-light inorganic bromine-lead-cesium perovskite nanoparticles
  • Ultrasonic preparation method of blue-light inorganic bromine-lead-cesium perovskite nanoparticles
  • Ultrasonic preparation method of blue-light inorganic bromine-lead-cesium perovskite nanoparticles

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[0027] An embodiment of the present invention provides a method for ultrasonically preparing blue-light inorganic bromine-lead-cesium perovskite nanoparticles, including: S1, ultrasonically dissolving cesium acetate and lead acetate in compounds of oleic acid, oleylamine and 1-octadecene , to obtain a precursor solution; S2, adding benzoyl bromide to the precursor solution, and ultrasonically reacting; S3, quenching the reaction in an ice bath, adding ethyl acetate, and centrifuging to obtain bromine-lead-cesium perovskite nanoparticles.

[0028] The method prepares high-efficiency luminescent blue-light inorganic perovskite nanoparticles through ultrasonic synthesis, including: adding cesium acetate and lead acetate to ligands oleic acid and oleylamine, and non-coordinating solvent 1-octadecene; performing ultrasonic to make the solid powder completely Dissolve to form a precursor solution; after adding benzoyl bromide, perform ultrasonication; after ultrasonication, take out ...

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Abstract

The invention provides an ultrasonic preparation method of blue-light inorganic bromine-lead-cesium perovskite nanoparticles. The method comprises the following steps: S1, dissolving cesium acetate and lead acetate in a compound of oleic acid, oleylamine and octadecene by ultrasonic treatment to obtain a precursor solution; s2, adding benzoyl bromide into the precursor solution, and carrying out ultrasonic treatment for reaction; and S3, carrying out an ice-bath quenching reaction, adding ethyl acetate, and carrying out centrifugal separation to obtain the bromine-lead-cesium perovskite nanoparticles. The efficient luminous blue light CsPbBr3 nanoparticles are prepared through a simple and convenient ultrasonic synthesis method, and the method has the characteristics that the method is simple, large-scale preparation can be realized, the particle uniformity is good, the optical performance is excellent, and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of perovskite luminescent nanoparticles, in particular to an ultrasonic preparation method of blue light inorganic bromine-lead-cesium perovskite nanoparticles. Background technique [0002] Metal halide perovskite semiconductors are promising light-emitting materials for electroluminescent and photoluminescent displays due to their excellent optical properties such as high color purity, easy spectral adjustment, and high luminous efficiency. , and has shown potential as a luminescent probe in bioimaging applications. They exhibit intense and efficient luminescence due to their direct bandgap and tolerance to defects. Perovskites can also be tuned to span the ultraviolet, visible, and near-infrared by controlling the composition of halides that contain iodide, bromide, or chloride. [0003] Although mixed-halide compositions represent a facile approach to bandgap and emission tuning, they of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/66
CPCC09K11/665
Inventor 姚宏斌刘雨莹
Owner UNIV OF SCI & TECH OF CHINA
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