Integrated quantum dot synthesizing method and device based on micro-channel ion pump

A synthesis device and microchannel technology, applied in chemical instruments and methods, chemical/physical processes, chemical/physical/physical-chemical processes, etc., can solve the problems of difficulty in uniform distribution of precursor solutions, and achieve controllable reactions, cost savings, The effect of increasing the synthesis rate

Active Publication Date: 2017-02-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the synthesis of quantum dots in traditional microchannels, there is a problem that the precursor solution is difficult to be evenly distributed in the microchannels.

Method used

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  • Integrated quantum dot synthesizing method and device based on micro-channel ion pump
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  • Integrated quantum dot synthesizing method and device based on micro-channel ion pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The above device was used to prepare the green perovskite quantum dot solution.

[0051] According to attached figure 1 The ion pump device is assembled as shown, and the device is connected to the precursor liquid container and the quantum dot collector according to the above connection method, and the reaction chamber of the device is placed in a temperature-controlled oil bath. Wherein the groove of the device micro-grooved corrugated plate 4 is V-shaped, the depth of the V-shaped groove is 2mm, and the top angle is 90°.

[0052] (1) Fully dissolve 0.2mmol of cesium bromide in 10ml of dimethylformamide (DMF), pour into the first precursor solution container 7; fully dissolve 0.2mmol of lead bromide in 10ml of DMF, and pour into the first precursor container 7; Two precursor liquid containers 12;

[0053] (2) Add 1ml of oleic acid (OA), 0.5ml of oleylamine (OAm) and 57.5mL of toluene to both the first precursor container 7 and the second precursor container 12. Pre...

Embodiment 2

[0059] According to attached figure 1 The ion pump device is assembled as shown, and the device is connected to the precursor liquid container and the quantum dot collector according to the above connection method, and the reaction chamber part of the device is placed in a temperature-controlled oil bath. Wherein the groove of the device micro-grooved corrugated plate 4 is a trapezoidal groove with a depth of 1 mm, the upper width of the trapezoid is 300 μm, and the lower width is 2 mm.

[0060] (1) Fully dissolve 0.2mmol of cesium bromide in 10ml of dimethylformamide (DMF), pour into the first precursor solution container 7; fully dissolve 0.2mmol of lead bromide in 10ml of DMF, and pour into the first precursor container 7; Two precursor liquid containers 12;

[0061] (2) Add 1ml of oleic acid (OA), 0.5ml of oleylamine (OAm) and 57.5mL of toluene to both the first precursor container 7 and the second precursor container 12. Precursor solution A and precursor solution B are...

Embodiment 3

[0067] According to attached figure 1 The ion pump device is assembled as shown, and the device is connected to the precursor liquid container and the quantum dot collector according to the above connection method, and the reaction chamber part of the device is placed in a temperature-controlled oil bath. Wherein the groove of the device micro-grooved corrugated plate 4 is a rectangular groove, the groove depth is 1mm, and the groove width is 1.5mm.

[0068] (1) Fully dissolve 0.2mmol of cesium bromide in 10ml of dimethylformamide (DMF), pour into the first precursor solution container 7; fully dissolve 0.2mmol of lead bromide in 10ml of DMF, and pour into the first precursor container 7; Two precursor liquid containers 12;

[0069] (2) Add 1ml of oleic acid (OA), 0.5ml of oleylamine (OAm) and 57.5mL of toluene to both the first precursor container 7 and the second precursor container 12. Precursor solution A and precursor solution B are respectively prepared in the containe...

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Abstract

The invention discloses an integrated quantum dot synthesizing method and device based on a micro-channel ion pump. The device comprises a first precursor solution container (7), a first one-way valve (8), a Y-shaped tube (9), a quantum dot solution collector (10), a reaction cavity (11), a second precursor solution container (12) and a second one-way valve (13); and the reaction cavity (11) comprises a precursor solution guide-in channel (1), an plate electrode (2), a micro-groove corrugated plate (4) and a quantum dot solution guide-out channel (3). Direct-current voltage is applied to the plate electrode (2), a strong electric field is formed in a micro-channel of the micro-groove corrugated plate (4), the ion pump effect is achieved, a mixed precursor solution flows into the micro-channel in an orientated manner and reacts, and an obtained quantum dot solution also flows out of the micro-channel in an orientated manner under the ion pump effect. Power and a reaction environment are integrated, synthesis speed of quantum dots is increased, and the device has the advantages of controllable reaction, cost conservation and the like.

Description

technical field [0001] The invention belongs to the field of preparation of quantum dot nanomaterials, and in particular relates to a quantum dot synthesis method and device based on a microchannel ion pump. Background technique [0002] As a new type of nanomaterial, quantum dots have broad application prospects in many fields such as biomedicine, catalysis, solar cells, and light-emitting devices. Since quantum dots have a significant size effect and can absorb light above a specific threshold wavelength, the color of a single type of nano-semiconductor material can change with the particle size, which is why quantum dots are used in fluorescent marking and full-band lighting. and other important features. Therefore, the research on the preparation method of quantum dots with multiple particle sizes formed from the same material has become a recent hot spot. [0003] At present, the preparation of quantum dots is mainly based on chemical methods, and the quantum dots are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/66B01J19/00
CPCB01J19/0093C09K11/661
Inventor 王卉玉李宗涛汤勇饶龙石林庆宏陈钧驰袁伟
Owner SOUTH CHINA UNIV OF TECH
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