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Core-shell structured CuInS2/ZnS nanorod and preparation method thereof

A core-shell structure, cuins2 technology, applied in nanotechnology, nano-optics, nanotechnology and other directions, can solve the problems of inability to achieve mass production, inability to provide high quantum efficiency, quantum dots do not have nanorod optical properties, etc. Mass production, suppression of Auger non-radiative recombination, low cost effect

Active Publication Date: 2017-03-29
TCL CORPORATION
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Problems solved by technology

[0006] In view of above-mentioned deficiencies in the prior art, the object of the present invention is to provide a kind of CuInS of core-shell structure 2 / ZnS nanorods and their preparation methods aim to solve the problem that the existing synthesis methods of quantum dots cannot provide high quantum efficiency, cannot achieve mass production, and the prepared quantum dots do not have the unique optical properties of nanorods

Method used

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  • Core-shell structured CuInS2/ZnS nanorod and preparation method thereof
  • Core-shell structured CuInS2/ZnS nanorod and preparation method thereof

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Embodiment 1

[0039] combine figure 2 As shown, CuInS with a core-shell structure with an aspect ratio of 20nm:5nm 2 / ZnS nanorods were prepared as follows:

[0040] (1) CuInS 2 Preparation of nanorods

[0041] Under an inert gas atmosphere, 0.45 mmol of indium chloride (InCl 3 ), 0.1 mmol of cuprous chloride (CuI) and 10 mmol of dodecanethiol (1-dodecanethiol), then heated the mixture under vacuum to 120 ° C and degassed for 30 mins, and then the degassed mixed The solution was heated to 230 °C for 300 s under an inert atmosphere to obtain CuInS 2 Nano stave;

[0042] (2) Preparation of fatty acid zinc precursor

[0043] Under an inert gas atmosphere, at 260 ° C, 0.2 mmol of zinc stearate, 0.5 mmol of dodecanethiol (1-dodecanethiol) and 8 mmol of 1-octadecene (1-Ocatadecene) were mixed and heated Obtain fatty acid zinc precursor.

[0044] (3) Growth of ZnS shell

[0045] Under an inert gas atmosphere, 3 / 4 of the fatty acid zinc precursor (containing 0.6 mmol fatty acid zinc) was ...

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Abstract

The invention discloses a core-shell structured CuInS2 / ZnS nanorod and a preparation method thereof. The preparation method comprises the steps of mixing indium chloride, cuprous chloride and lauryl mercaptan to obtain a CuInS2 nanorod; mixing and heating zinc fatty acid, lauryl mercaptan and 1-octadecene to obtain zinc fatty acid precursor; rapidly filling the obtained zinc fatty acid precursor into CuInS2 nanorod solution then slowly filling in the rest of the zinc fatty acid precursor for reaction; performing repeated dissolution and precipitation on reaction products and then performing centrifugal purification to obtain the core-shell structured CuInS2 / ZnS nanorod. The core-shell structured CuInS2 / ZnS nanorod obtains a large light energy absorbing section for linear polarized absorption and polarized emission and meanwhile can inhibit Auger non-radiative recombination and achieves relatively high illumination efficiency. Meanwhile, the high-quality core-shell structured CuInS2 / ZnS nanorod can be applied to lighting and display.

Description

technical field [0001] The invention relates to the technical field of quantum dot preparation, in particular to CuInS with a core-shell structure 2 / ZnS nanorod and its preparation method. Background technique [0002] In recent years, copper indium sulfur-based quantum dots have received more and more attention. Compared with cadmium-containing quantum dots, copper indium sulfur quantum dots are safer to use. As a high-energy-efficiency, wide-color-gamut luminescent material, copper indium sulfur quantum dots have applications in lighting, display, solar energy conversion, and molecular and cell imaging. [0003] The synthesis methods of copper indium sulfur quantum dots usually include solvothermal method, photochemical co-precipitation method, and thermal decomposition method, but these methods cannot provide copper indium sulfur quantum dots with high quantum efficiency, nor can they achieve mass production. [0004] In addition, quantum dots with different morphologi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/62B82Y20/00B82Y40/00
CPCB82Y20/00B82Y40/00C09K11/02C09K11/623
Inventor 刘政杨一行曹蔚然钱磊向超宇
Owner TCL CORPORATION
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