Organic light-emitting device

A technology of organic light-emitting devices and light-emitting layers, which is applied in the direction of electric solid-state devices, semiconductor devices, semiconductor/solid-state device manufacturing, etc., can solve the problems of low-level development of blue main body, and achieve the effect of improving service life

Pending Publication Date: 2021-04-20
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As an example of such efforts, the red light-emitting layer and the green light-emitting layer each contain a phosphorescent material, and in particular, phosphorescent materials using Ir complexes have been actively studied and are also continuing to be used to introduce phosphorescent materials into the blue light-emitting layer. efforts in , but the development of blue hosts requiring high singlet and triplet energies is currently at a low level

Method used

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Embodiment approach

[0622] Hereinafter, the specification will be described in detail with reference to Examples for specifically describing the specification. However, the embodiments according to the present specification can be modified in various forms, and it should not be construed that the scope of the present application is limited to the embodiments described in detail below. The examples of this application are provided to more fully explain this description to those of ordinary skill in the art.

[0623] The compounds used in the following Experimental Examples are as follows.

[0624]

[0625]

[0626]Among the compounds, PD1 was synthesized by using the content and synthesis method described in Korean Patent No. 10-1188391B1 or partially modifying the synthesis method, HT1 was synthesized by using the content and synthesis method described in Japanese Patent No. 5133259B2 or Synthesized by partially modifying the synthesis method, HT2 was synthesized by using the content and s...

Embodiment 1

[0628] The manufacture of embodiment 1.OLED

[0629] As an anode, ITO / Ag / ITO is deposited on it to a thickness of The substrate was cut into a size of 50 mm×50 mm×0.5 mm, placed in distilled water in which a dispersant was dissolved, and washed with ultrasonic waves. A product manufactured by Fischer Co. was used as a detergent, and distilled water filtered twice with a filter manufactured by Millipore Co. was used as distilled water. After washing the ITO for 30 minutes, ultrasonic washing was repeated twice for 10 minutes using distilled water. After the washing with distilled water was completed, ultrasonic washing was performed using isopropanol, acetone, and methanol solvents in this order, followed by drying.

[0630] HT2 was thermally vacuum deposited on the anode thus prepared to have , and co-deposit PD1 (2% by weight) to form a hole injection layer, and vacuum-deposit HT2 as a material for transporting holes on the hole injection layer to have thickness to for...

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Abstract

The present specification provides an organic light-emitting device comprising: an anode; a cathode provided to face the anode; and organic material layers comprising an emission layer disposed between the anode and the cathode, wherein the emission layer, one or more layers from among the organic material layers disposed between the anode and the emission layer, and one or more layers from among the organic material layers disposed between the cathode and the emission layer each comprise one or more sp3-carbon-based compounds, the emission layer comprises a host including one or more anthracene-based compounds, and among organic materials included in the organic material layers, each of organic materials except for dopant compounds has a bandgap energy (Ebg) of 3 eV or more.

Description

technical field [0001] This application claims priority and benefit from Korean Patent Application No. 10-2018-0135200 filed in the Korean Intellectual Property Office on November 6, 2018, the entire contents of which are incorporated herein by reference. [0002] This specification relates to organic light emitting devices. Background technique [0003] An organic light emitting device has a structure in which an organic thin film is arranged between two electrodes. When a voltage is applied to the organic light emitting device having such a structure, electrons and holes injected from two electrodes combine with each other in the organic thin film to form a pair, and then the paired electrons and holes emit light while being annihilated. The organic thin film may consist of a single layer or multiple layers, if necessary. [0004] Efforts are continually being made to increase the external quantum efficiency (EQE) of each of the red, green, and blue light emitting layers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/00H01L51/50
CPCH10K85/60H10K85/636H10K85/6572H10K50/11H10K2101/30H10K85/649H10K85/615H10K85/6576H10K85/6574H10K50/12H10K85/30H10K85/622H10K85/624H10K85/626H10K85/633H10K85/654H10K2101/10H10K2101/90
Inventor 河宰承千民承李禹哲琴水井尹洪植
Owner LG CHEM LTD
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