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Thin film as well as preparation method and application thereof

A thin-film, aminated tetracyanoquinodimethane technology, which is applied in semiconductor/solid-state device manufacturing, electrical components, electric solid-state devices, etc., can solve the problems of limited application of QLED, low electro-optical conversion efficiency, and short service life. Achieve the effects of increasing efficiency, improving efficiency, and strong conductivity

Active Publication Date: 2019-07-09
SHENZHEN TCL IND RES INST
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide a thin film and its preparation method and application, aiming to solve the problems of low electro-optical conversion efficiency and short service life of the existing blue QLED which limit the application of QLED in full-color display

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  • Thin film as well as preparation method and application thereof
  • Thin film as well as preparation method and application thereof
  • Thin film as well as preparation method and application thereof

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preparation example Construction

[0022] The embodiment of the present invention provides a method for preparing a thin film corresponding to the previous embodiment, the method includes the following steps:

[0023] Step S01: providing aminated tetracyanoquinodimethane solution and tetramethylbenzidine solution.

[0024] Specifically, the concentrations of the aminated tetracyanoquinodimethane solution and the tetramethylbenzidine solution are both 0.001-0.003 mol / L.

[0025] Step S02: The molar ratio of the chloroform solution of aminated tetracyanoquinodimethane to the chloroform solution of tetramethylbenzidine is 1: (1-2) aminated tetracyanoquinodimethane solution and tetramethylbenzidine The aniline solutions are mixed to obtain a mixed solution, and the mixed solution is deposited on a substrate and subjected to annealing treatment to obtain a complex thin film of aminated tetracyanoquinodimethane and tetramethylbenzidine.

[0026] In the embodiment of the present invention, the complex of aminated tet...

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Abstract

The invention belongs to the field of light-emitting devices, and provides a thin film as well as a preparation method and an application thereof. According to the thin film provided by the invention,on one hand, the complex of aminated tetracyanoquinodimethane and tetramethyl benzidine can increase the work function of an anode, and hole injection is facilitated; and on the other hand, the complex of aminated tetracyanoquinodimethane and tetramethyl benzidine has a very large conjugated bond and very strong electrical conductivity, a dipole moment exists in the interior, and holes are rapidly transferred to a light-emitting layer under the action of the dipole moment, so that the efficiency is improved. When the thin film material is applied to a light emitting device, the efficiency ofthe light-emitting device can be improved by using the complex of aminated tetracyanoquinodimethane and tetramethyl benzidine as a modification layer between the anode and an organic layer.

Description

technical field [0001] The invention belongs to the field of light-emitting devices, and in particular relates to a thin film and its preparation method and application. Background technique [0002] Semiconductor quantum dots have size-tunable optoelectronic properties and have been widely used in light-emitting diodes, solar cells, and bioluminescent labels. After more than 20 years of development of quantum dot synthesis technology, various high-quality nanomaterials can be synthesized, and their photoluminescence efficiency can reach more than 85%. Because quantum dots have the characteristics of luminescence with adjustable size, narrow luminous line width, high photoluminescence efficiency and thermal stability, quantum dot light-emitting diodes (Quantum Dot Light Emitting Diodes, QLED) with quantum dots as the light-emitting layer are extremely promising. next-generation display and solid-state lighting sources. [0003] QLED has received extensive attention and res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/54H01L51/50H01L51/52H01L51/56
CPCH10K85/30H10K50/17H10K50/81H10K71/00
Inventor 刘佳曹蔚然
Owner SHENZHEN TCL IND RES INST
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