Organic light-emitting diode

A technology of light-emitting diodes and organic light-emitting layers, applied in electrical components, circuits, electric solid devices, etc., can solve the problems of poor dispersion, disorderly arrangement of carbon nanotubes, uneven dispersion, etc., and achieve good dispersion and enhanced electron transmission. effect of ability

Active Publication Date: 2019-03-05
TSINGHUA UNIV +1
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Problems solved by technology

However, due to the fact that carbon nanotubes are easy to agglomerate in organic solvents and have poor dispersion, the carbon nanotubes in the prepared composite structure are arranged in a disorderly manner and the dispersion is not uniform.
When the composite structure is used as an electron transport layer in an OLED, the electron transport layer has a poor ability to transport electrons

Method used

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  • Organic light-emitting diode
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preparation example Construction

[0056] See figure 1 , the first embodiment of the present invention provides a method for preparing a carbon nanotube composite structure 130, comprising the following steps: S1, disposing a carbon nanotube structure 110 on the first surface 102 of a substrate 100, the carbon nanotube structure 110 There is an opposite second surface 112 and a third surface 114, the third surface 114 is in direct contact with the first surface 102 of the substrate 100; S2, providing a monomer solution 140, the monomer solution 140 is to disperse the monomer into the organic formed in a solvent, and apply the monomer solution 140 to the carbon nanotube structure 110; S3, polymerize the monomer; S4, remove the substrate 100 to obtain the carbon nanotube composite structure 130.

[0057]In step S1 , the carbon nanotube structure 110 includes a plurality of uniformly distributed carbon nanotubes 118 , with gaps 116 between adjacent carbon nanotubes 118 . The plurality of carbon nanotubes 118 are ...

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Abstract

The invention discloses an organic light-emitting diode. The organic light-emitting diode comprises a support body, an anode electrode, a hole transport layer, an organic light-emitting layer and an electron transport layer which are sequentially stacked; the electron transport layer adopts a carbon nanotube composite structure; the carbon nanotube composite structure has a first surface and a second surface which are opposite to each other; the carbon nanotube composite structure comprises a polymer and a plurality of carbon nanotubes; the carbon nanotubes are dispersed in the polymer; part of the surfaces of the carbon nanotubes are exposed from the first surface of the polymer; and the carbon nanotubes are spaced from the organic light-emitting layer.

Description

technical field [0001] The invention relates to an organic light emitting diode. Background technique [0002] Organic light emitting diode (OLED) is a light-emitting diode whose light-emitting layer is composed of organic compounds. As an efficient light source, it has many characteristics such as light weight, thin thickness, multi-color, and low manufacturing cost , making organic light-emitting diodes gradually show a tendency to replace traditional light-emitting diodes in the lighting application of large-area surface light sources, and have been widely used in various fields. [0003] The composite structure formed by carbon nanotubes and polymers in the prior art can be used as the electron transport layer of OLED. The composite process of the carbon nanotubes and the polymer is generally: dispersing the carbon nanotubes in an organic solvent to form a carbon nanotube dispersion, dissolving the polymer in an organic solvent to form a polymer solution, and then disso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/56H01L51/54
CPCH10K85/111H10K85/221H10K50/165H10K71/00H10K71/191H10K50/16H10K71/80
Inventor 宁文柳鹏姜开利范守善
Owner TSINGHUA UNIV
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