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Quantum dot solid film and preparation method thereof

A technology for quantum dots and solid-state films, applied in the field of quantum dot solid-state films and their preparation, can solve problems such as the inability to prepare large-area solid quantum dot films, and achieve the effect of solving the inability to prepare large-area flat quantum dot solid-state films

Inactive Publication Date: 2017-03-08
TCL CORPORATION
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a quantum dot solid film and its preparation method, aiming to solve the problem that the existing solution method spin coating cannot prepare a large-area solid quantum dot film

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  • Quantum dot solid film and preparation method thereof

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Embodiment Construction

[0022] The present invention provides a quantum dot solid film and a preparation method thereof. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] figure 1 It is a flowchart of a preferred embodiment of a method for preparing a quantum dot solid-state film of the present invention, as shown in the figure, including steps:

[0024] S100. First, carry out surface modification or ligand exchange on the quantum dots with electronegative ligands at the hydrophilic end to obtain quantum dots with electronegative ligands, and then disperse the quantum dots with electronegative ligands in water and stir evenly to obtain a quantum dot solution;

[0025] In step S100, the ligand can be an oil-soluble ligand...

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Abstract

The invention discloses a quantum dot solid film and a preparation method thereof. The method comprises carrying out surface modification or ligand exchange on quantum dots through ligands of which hydrophilic ends have electronegatability to obtain quantum dots with the electronegative ligands, dispersing the quantum dots with the electronegative ligands in water, carrying out uniform stirring to obtain a quantum dot solution, putting an electrode plate in the quantum dot solution, and depositing the quantum dots on the electrode plate through an electrophoretic deposition method to obtain a quantum dot solid film. Through surface modification or ligand exchange of the quantum dots and deposition of the quantum dot solid film based on an electrophoretic deposition method, the problem that a spin-coating method cannot produce a flat quantum dot solid film with a large area is solved. The preparation method is simple, has a low cost and is suitable for low-cost large-scale preparation.

Description

technical field [0001] The invention relates to the technical field of quantum dot films, in particular to a quantum dot solid film and a preparation method thereof. Background technique [0002] Luminescent quantum dots (QD) have attracted much attention as the next generation of new display materials. Therefore, how to simply and effectively prepare luminescent quantum dots into a flat quantum dot solid film has become a very important step for quantum dot devices and future display panels. There are many methods for preparing quantum dot films, such as: spin coating method, transfer printing method and so on. [0003] Luminescent quantum dots (QD) have a wide range of potential applications due to their good stability, high fluorescence intensity, and high color purity. When developing applications for quantum dots, their surfaces are usually modified. If quantum dots are Different surface modifications have different corresponding application ranges. For example, after...

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Application Information

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IPC IPC(8): C09K11/88C09K11/02H01L33/50B82Y40/00
CPCC09K11/883B82Y40/00C09K11/02H01L33/502
Inventor 程陆玲杨一行
Owner TCL CORPORATION
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