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Preparation method of quantum dot, quantum dot/UV glue solution and quantum dot doped optical fiber

A technology of quantum dots and colloid solution, which is applied in the field of nanomaterials and optical communications, can solve the problems of toxicity and high material cost, and achieve the effects of less impurity, high dispersion and uniformity

Active Publication Date: 2019-11-05
ZHONGTIAN TECH FIBER OPTICS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reported quantum dot-doped optical fibers are all doped with binary compounds such as PbSe, CdSe, CdTe, and CdS. Rare dispersed elements or even heavy metal elements are introduced into the optical fiber. The material cost is high and toxic, which is contrary to the concept of green optical communication.

Method used

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  • Preparation method of quantum dot, quantum dot/UV glue solution and quantum dot doped optical fiber
  • Preparation method of quantum dot, quantum dot/UV glue solution and quantum dot doped optical fiber
  • Preparation method of quantum dot, quantum dot/UV glue solution and quantum dot doped optical fiber

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preparation example Construction

[0049] Specifically, the quantum dot preparation method provided in the embodiment of the present invention includes the following steps:

[0050] 1) According to Cu(CH 3 COO) 2 : Zn(CH 3 COO) 2 =(1~10): 1, Zn(CH 3 COO) 2 : SnCl 2 =1:(1~5) molar ratio Weigh reagents, add to 10~100mL of octadecene (Octadecene, ODE), under vacuum or inert gas atmosphere, heat the solution to 100~150°C, stir evenly, until the metal salt is completely dissolved;

[0051] 2) Add 0.5-5mL of dodecanethiol (DDT), and keep warm at 100-150°C for more than 10 minutes;

[0052] 3) Add 0.2-2mL oleic acid (Oleic acid, OA), and keep warm at 100-150°C for more than 10 minutes to remove water and dissolved oxygen in the solution;

[0053] 4) Rapidly raise the temperature to a reaction temperature of 200-300°C and keep it warm for 2-50 minutes to obtain a dark brown liquid;

[0054] 5) After the product solution is cooled to room temperature, vigorously mix and shake according to the volume ratio of pr...

Embodiment 1

[0058] Take analytically pure 1mmol Cu(CH 3 COO) 2 , 0.5mmol Zn(CH 3 COO) 2 , 0.5mmol SnCl 2 And 20mL ODE was placed in a three-necked flask, stirred evenly at 120°C under vacuum until the metal salt was completely dissolved; 1mL DDT was added, and kept at 120°C for 10min; then 0.5mL OA was added, and the solution was heated to 120°C for 10min; quickly heated to Reaction temperature 220°C, keep warm for 20min, wait for the product solution to cool to room temperature, vigorously mix and shake according to the volume ratio of product solution: methanol = 1:3, centrifuge at 6000-8000rmp, and obtain 3.6nm Cu after centrifugal purification 2 ZnSnS 4 quantum dots. figure 2 It is the Cu prepared by the quantum dot-doped optical fiber preparation method provided by the embodiment of the present invention 2 ZnSnS 4 The transmission electron microscope figure of quantum dot, the Cu that this embodiment obtains 2 ZnSnS 4 Quantum dot transmission electron microscope picture as ...

Embodiment 2

[0060] In this example, except that the reaction temperature was 240°C, the temperature was kept for 20 minutes, and 5.3nm Cu was obtained after centrifugal purification. 2 ZnSnS 4 Quantum dots, other reaction conditions and implementation process are the same as in Example 1. image 3 It is the Cu prepared by the quantum dot-doped optical fiber preparation method provided by the embodiment of the present invention 2 ZnSnS 4 The transmission electron microscope figure of quantum dot, the Cu that this embodiment obtains 2 ZnSnS 4 Quantum dot transmission electron microscope picture as image 3 shown.

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Abstract

The invention discloses a preparation method of a quantum dot, a quantum dot / UV glue solution and a quantum dot doped optical fiber, and belongs to the technical field of nano materials and optical communication. According to the preparation method of a quantum dot, the Cu2ZnSnS4 quantum dot is prepared by a thermal decomposition method, and the controllable synthesis of quantum dot structure andsize can be realized, and the product has high dispersibility and uniformity and has few impurity phases. The technical problem that the pure-phase Cu2ZnSnS4 quantum dot is difficult to synthesize issolved, the quantum dot obtained can be directly used for preparing the quantum dot doped optical fiber, and great industrial value is achieved.

Description

technical field [0001] The invention relates to the technical field of nanometer materials and optical communication, in particular to a preparation method of quantum dots, quantum dot / UV glue solutions and quantum dot-doped optical fibers. Background technique [0002] Quantum dots are nanocrystalline particles with a size of 1-20nm. Their internal electrons or holes are limited in three-dimensional space, and their energy level structures are separated. They have quantum size effects, quantum confinement effects, surface effects, etc., and have been widely used in bioluminescence. Labeling, photocatalysis, solar cells and other fields. The absorption and radiation spectrum of quantum dots almost cover the 490-2300nm band, so quantum dot-doped optical fiber is a better choice to achieve broadband luminescence; at the same time, by changing the type and size of quantum dots, the absorption (radiation) peak position, full width half-height (FWHM) is controllable and the proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/66C01G19/00B82Y30/00G02B6/02
CPCC09K11/662C01G19/006B82Y30/00G02B6/02C01P2002/72C01P2004/04Y02P70/50
Inventor 杨郭杰耿培恒柴雪峰曹珊珊王震徐海涛
Owner ZHONGTIAN TECH FIBER OPTICS
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