Device and method for rapidly and continuously synthesizing multi-morphology cesium lead halide cluster perovskite quantum dots

A cesium lead halide and perovskite technology is applied in the field of rapid and continuous synthesis of multi-morphology cesium lead halide cluster perovskite quantum dots. Problems such as large-scale production and uneven size of quantum dots can achieve the effect of low cost, high product quality and continuous synthesis
CN107474833BActive Publication Date: 2020-07-17EAST CHINA UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
EAST CHINA UNIV OF SCI & TECH
Publication Date
2020-07-17

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Abstract

The invention relates to a device and a method for rapidly and continuously synthesizing multi-morphology Cs-Pb halo-cluster perovskite quantum dots. The device is characterized in that a Cs precursor injector and a lead halide precursor injector are connected to two first annular microchannels arranged in a constant-temperature oil bath through polytetrafluoroethylene connecting tubes respectively, and the two annular microchannels are connected with a micromixer arranged on a heating magnetic stirrer and then sequentially connected with a second annular microchannel and a liquid collector through the polytetrafluoroethylene connecting tubes. The polytetrafluoroethylene capillary tubes are adopted as the microchannels, stable reaction temperature and precise reaction time are provided for a reaction, the prepared perovskite quantum dots are uniform in size and have three different morphologies including spherical, rod-like and cubic morphologies, and meanwhile, the perovskite quantum dots with the fluorescence spectrum range being 395-700 nm can be synthesized rapidly by changing types and ratio of halogen elements and the reaction temperature.
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Description

technical field

[0001] The invention relates to a device and method for rapidly and continuously synthesizing multi-morphology cesium lead halide cluster perovskite quantum dots. The said halogen clusters are Cl, Br, I. The invention relates to a device and a synthesis method for rapidly synthesizing perovskite quantum dots, which belong to the field of microchemical mechanical system and nanometer material preparation. Background technique

[0002] Quantum dots, which can be called nanocrystals and sometimes "artificial atoms", have a wide range of applications in many fields such as biomedicine, displays, semiconductor devices, solar cells, and light-emitting devices. In the past few years, perovskite materials have made breakthroughs in the field of solar cells. According to the certified solar cell efficiency of the National Renewable Energy Laboratory, organic-inorganic hybrid based perovskite MAPbX 3 (MA=CH 3 NH 3 + ,X=Cl - , Br - , I - , or by mixing two or thr...

Claims

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