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Acridine compounds, polymers and their applications, light-emitting devices

A technology for light-emitting devices and compounds, which is applied in the manufacturing of electric solid-state devices, semiconductor devices, and semiconductor/solid-state devices, etc., can solve problems such as unfavorable device luminescence, and achieve the effect of improving luminous efficiency.

Active Publication Date: 2022-03-29
GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, during the preparation process, the above-mentioned oil-soluble solvent may dissolve or partially dissolve other functional layers, such as hole transport layer materials, resulting in the quenching of excitons in the light-emitting layer, which is not conducive to the light emission of the device.

Method used

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  • Acridine compounds, polymers and their applications, light-emitting devices
  • Acridine compounds, polymers and their applications, light-emitting devices
  • Acridine compounds, polymers and their applications, light-emitting devices

Examples

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preparation example Construction

[0098]The preparation method of the light-emitting device comprises the following steps:

[0099] (1) First, clean the ITO substrate in the following order: 5% KOH solution ultrasonication for 15 minutes, pure water ultrasonication for 15 minutes, isopropanol ultrasonication for 15 minutes, and oven drying for 1 hour; then transfer the substrate to UV-OZONE equipment for surface treatment for 15 minutes. Immediately transfer to the glove box.

[0100] (2) Spin-coat a layer of hole injection layer material, namely PEDOT:PSS thin film, on a clean ITO substrate, and then bake at 230° C. for 15 minutes.

[0101] (3) dissolving the acridine compound (M) in o-xylene to form a solution, spin coating the solution on the hole injection layer film by spin coating, and then baking at 80° C. for 10 min to remove the residual solvent, and then Make it cross-linked at 230°C for 30-60 minutes.

[0102] (5) Spin-coat the luminescent layer ink, and then vapor-deposit the electron transport l...

Embodiment 1～8

[0105] Using compounds M1-M8 as materials for the hole transport layer, light-emitting devices 1-8 were prepared according to the structures and preparation methods of the above-mentioned light-emitting devices.

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Abstract

The invention relates to an acridine compound, a polymer, an application thereof, and a light-emitting device. The structural formula of this acridine compound is shown in formula (I): wherein, n 1 ~n 4 independently choose 0 or 1, and n 1 ~n 4 Not 0 at the same time; D 1 ~D 4 are independently selected from: a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group. In the invention, the acridine unit connected by spiro structure is used as the core, the arylene group and the heteroaryl group are used as the arms, and the vinyl unit is used as the terminal to construct the acridine compound. The compound is soluble in conventional solvents at room temperature, and due to the electron-donating conjugation of the nitrogen atom in the acridine unit, the electron cloud density of the entire acridine unit is relatively high, making it a good unit for transporting holes; its terminal It is a vinyl unit, cross-linked at high temperature to form a cross-linked layer that is not easily soluble in conventional solvents, and is not easily dissolved by the solvent of the next functional layer, which is beneficial to improve the luminous efficiency.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to an acridine compound, a polymer, an application thereof, and a light-emitting device. Background technique [0002] The solution processing method is a low-cost, large-area method for preparing organic light-emitting diodes (Organic Light-Emitting Diode, OLED). However, when using the solution method to process OLED devices, since the material of the light-emitting layer is generally a polycyclic aromatic hydrocarbon or a polymer with polybenzene rings, the solvent generally uses an oil-soluble solvent, such as o-dichlorobenzene, o-xylene and other solvents. Therefore, during the preparation process, the above-mentioned oil-soluble solvent may dissolve or partially dissolve other functional layers, such as hole transport layer materials, resulting in the quenching of excitons in the light-emitting layer, which is not conducive to the light emission of the devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D471/10C08F12/26H01L51/54H01L51/50
CPCC07D471/10C08F12/26H10K85/141H10K85/626H10K85/6572H10K50/12H10K50/11
Inventor 郑江波
Owner GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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