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Quantum dots and preparation method thereof

A technology of quantum dots and content, applied in the field of quantum dots, can solve the problem of high cost, achieve the effects of convenient operation, lower production and use costs, and good light absorption properties

Active Publication Date: 2018-12-14
SUZHOU XINGSHUO NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, when quantum dots are applied to photoluminescence, in order to achieve the required luminous brightness, it is often necessary to use more quantum dots, and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of quantum dots 1

[0029] Under an inert gas atmosphere, 10 mL of zinc oleate (0.5 M) and 10 mL of 1-octadecene were mixed, and at 320° C., 1 mL of selenium tri-n-octylphosphine (2 M) and 1 mL of cadmium oleate ( 0.2M), the quantum dot 1 was prepared.

Embodiment 2

[0031] Preparation of quantum dots 2

[0032] Under an inert gas atmosphere, 10 mL of zinc oleate (0.5 M) and 10 mL of 1-octadecene were mixed, and at 320 ° C, 1.5 mL of selenium-tri-n-octylphosphine (2 M) and 1 mL of cadmium oleate were sequentially added (0.2M), the quantum dot 2 was prepared.

Embodiment 3

[0034] Preparation of quantum dots 3

[0035] 1) Under an inert gas atmosphere, mix 10 mL of zinc oleate (0.5M) and 10 mL of 1-octadecene, and add 1 mL of selenium-tri-n-octylphosphine (2M) and 1 mL of oleic acid in sequence at 320°C Cadmium (0.2M), then add 0.2mL sulfur tri-n-octylphosphine (2M) to prepare quantum dots;

[0036] 2) Add 10mL cadmium oleate (0.2M), 10mL diethylzinc (1M) and 4mL sulfur tributylphosphine (2M) to the reaction system in step 1), and coat the CdZnS shell on the quantum dots;

[0037] 3) adding diethylzinc (1M) and sulfur tributylphosphine (2M) to the reaction system of step 2) again, and coating the ZnS shell on the outside of the CdZnS shell;

[0038] Through the above steps, the quantum dot 3 is obtained.

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PUM

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Abstract

The invention relates to quantum dots and a preparation method thereof. Quantum dots comprise Zn element, Cd element and Se element, wherein the molar ratio of Zn element, Cd element and Se element is(1.8-2.8):(0.2):(2-3). The quantum dots have good light absorption properties, and can absorb more light emitted by blue LEDs when applied to photoluminescence, so that the usage quantity of the quantum dots in the application process is reduced, and the production cost and the use cost are reduced.

Description

technical field [0001] The application belongs to the technical field of quantum dots, and in particular relates to a quantum dot and a preparation method thereof. Background technique [0002] Quantum dots have narrow and tunable luminescence properties, and have broad application prospects in lighting, display, life science, fluorescent labeling, solar cells, and photocatalysis. [0003] In the prior art, when quantum dots are applied to photoluminescence, in order to achieve the required luminous brightness, it is often necessary to use more quantum dots, and the cost is high. Contents of the invention [0004] In view of the above problems existing in the existing quantum dots, the present invention provides a quantum dot with good light absorption properties and a preparation method thereof. [0005] The present invention firstly provides a quantum dot, including Zn element, Cd element, and Se element, and the molar ratio of the Zn element, Cd element, and Se element...

Claims

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Application Information

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IPC IPC(8): C09K11/02C09K11/88H01L33/50
CPCH01L33/502C09K11/02C09K11/883
Inventor 王允军李鑫
Owner SUZHOU XINGSHUO NANOTECH CO LTD
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