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Hybrid film of quantum dots and polymer crosslinking and its preparation method and qled

A technology of quantum dots and polymers, which is applied in the fields of organic semiconductor device materials, semiconductor/solid-state device manufacturing, organic light-emitting device manufacturing/processing, etc. It can solve the problems of chemical cross-linking, large amounts of impurities, etc., and achieve the effect of improving purity

Active Publication Date: 2020-03-31
TCL CORPORATION
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a hybrid thin film of quantum dots and polymer crosslinking and its preparation method and QLED device, aiming to solve the problem of a large amount of impurities produced in the existing chemical crosslinking process

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  • Hybrid film of quantum dots and polymer crosslinking and its preparation method and qled

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Embodiment

[0055] 20mg QD with 50mgCH 2 OH-(CH 2 ) 3 -COOH was mixed into 1 ml of chlorobenzene solvent to obtain a mixed solution. Spin coat the mixed solution to form a layer containing QD and CH 2 OH-(CH 2 ) 3 -COOH mixed film, vacuum drying after film formation to evaporate the solvent, forming a 50nm QD and CH 2 OH-(CH 2 ) 3 -Hybrid thin films of COOH. The said containing QD and CH 2 OH-(CH 2 ) 3 The mixed film of -COOH is placed in the HHIC reactor, and H 2 , and make H 2 Transform into H plasma, adjust the H plasma energy to 10eV, and cross-link for 10 minutes to obtain a mixed film of QDs and polymers. In the cross-linking process of HHIC in this example, there is no H 2 O generation, while cross-linked by traditional chemical methods, H 2 O is a by-product of the condensation reaction.

[0056] To sum up, the present invention provides a cross-linked hybrid film of quantum dots and polymers, a preparation method and a QLED device. The present invention utilizes ...

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Abstract

The invention discloses a mixed film cross-linked with quantum dots and polymers, a preparation method and QLED. The method includes the steps of: mixing quantum dots and a monomer with at least two functional groups in a solvent to obtain a mixed liquid; The solution is made of a mixed film containing quantum dots and monomers with at least two functional groups; the mixed film is cross-linked by HHIC technology, so that the monomers with at least two functional groups are cross-linked to form a polymer, Cross-linking occurs between the formed polymer and the quantum dots to obtain a mixed film of quantum dots and polymer cross-linking. The invention utilizes the HHIC method to avoid the generation of impurities, thereby improving the purity of the mixed film cross-linked by quantum dots and polymers.

Description

technical field [0001] The invention relates to the technical field of light-emitting diodes, in particular to a hybrid thin film cross-linked with quantum dots and polymers, a preparation method and a QLED device. Background technique [0002] Colloid (Colloid) quantum dots are nanomaterial systems based on liquid phase distribution. Colloidal quantum dots are prepared by different preparation processes (spin coating, printing, transfer printing or coating, etc.) to prepare quantum dot multilayer or single layer films. Because in the colloidal quantum dot system, the quantum dots are dispersed in the solvent, the solvent volatilizes after the film is formed, and a solid film with only quantum dots stacked is formed. The quantum dots are connected by weak van der Waals force, and the film shape cannot be maintained under external effects (mechanical force, solvent, etc.), so the application of colloidal quantum dots is greatly limited. For example, in the preparation proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/56H01L51/54C08G63/06C08J5/18C08L67/04
CPCC08G63/06C08J5/18C08J2367/04H10K85/10H10K85/60H10K50/115H10K2102/00H10K2102/301H10K71/00
Inventor 向超宇钱磊曹蔚然杨一行
Owner TCL CORPORATION
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