Quantum dot core-shell synthesis device and quantum dot core-shell synthesis method

Abstract

The invention discloses a quantum dot core-shell synthesizer. The quantum dot core-shell synthesizer comprises a core / shell reaction region for core-shell reaction, the core / shell reaction region comprises at least one helical reaction tube, the inner wall of the helical reaction tube is provided with an approach groove opposite to the helical shape and enabling a reactant injected into the reaction tube to generate bubbling effect due to friction, a heating region wraps the front section of the core / shell reaction region, a cooling region wraps the back section of the core / shell reaction region, a plurality of injection inlets are formed in the front end of the core / shell reaction region, a plurality of plankton discharge outlets are formed in the back end of the core-shell reaction region, and a pressurizing device is connected with the front end of the core-shell reaction region. The invention further discloses a quantum dot core-shell synthesizing method. The quantum dot core-shell synthesizer is capable of improving stability and particle size uniformity of quantum dots and makes the quantum dots free of defects and quantum efficiency maximized so as to synthesize the quantum dots higher in sharpness and light-emitting efficiency.

Description

technical field [0001] The invention relates to the field of quantum dot synthesis, in particular to a quantum dot core-shell synthesis device and a quantum dot core-shell synthesis method implemented by the quantum dot core-shell synthesis device. Background technique [0002] In the prior art, the synthesis method of quantum dots is a solution process, which mainly consists of a flask surrounded by a heating jacket, a magnetic stirrer that can make the solution inside the flask uniform, and a temperature regulator and a thermometer to control the temperature of the solution. In addition, a capacitor to maintain a stable concentration and a manifold that can switch vacuum / nitrogen atmosphere are added. [0003] The synthesis method is to use the precursor (precursor) organic compound to synthesize the core (core). In order to make the synthesized core and stabilizer form a proper shell in the mixing and stirring reactor, the precursor is repeatedly injected to form a struct...

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Problems solved by technology

Forced stirring by magnetic bar or stirrer in each reaction process, although this is a well-known method to achieve relatively uniform stirring, but according to the amount of reactants, the reaction stirring speed will be different, which will affect the size of the particles and stabilize the nanoparticles Formation

[0006] This existing synthesis method also requires precursor reactors, nuclear reactors, core / shell reactors, etc., because it is re-measured and measured after each reaction, and then synthesized, so there is a disadvantage that continuous operation cannot be performed.

Moreover, due to differences in reaction time, particle separation, etc., it may not be possible to obtain nanoparticles with uniform characteristics.

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