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Organic electroluminescent device and manufacturing method therefor

An electroluminescent device, organic technology, applied in the direction of organic semiconductor devices, semiconductor/solid-state device manufacturing, electric solid-state devices, etc., to achieve the effect of enhanced characteristics, excellent resistance, and improved interface characteristics

Active Publication Date: 2019-01-11
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method still suffers from the problem of resistance to solvents or inks post-treated as previously described

Method used

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  • Organic electroluminescent device and manufacturing method therefor
  • Organic electroluminescent device and manufacturing method therefor
  • Organic electroluminescent device and manufacturing method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0130] Preparation of copper acetate and Mo(CO) in a weight ratio of 0.8:99.2 6 A solution dissolved in cyclohexanone at a concentration of 4% by weight. The ITO-coated glass substrate was washed sequentially with water and isopropanol, and then the mixed solution was spin-coated onto the ITO-deposited base material for 30 seconds at 1000 rpm. The obtained thin film was subjected to heat treatment at 200° C. for 15 minutes in an oxygen atmosphere, thereby forming a hole injection layer having a very uniform thickness of 30 nm.

[0131] A hole transport layer with a thickness of 45 nm was formed on top of the hole injection layer by using 4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (NPB).

[0132] An electron blocking layer with a thickness of 15 nm was formed on top of the hole transport layer. BH of the following chemical formula as a blue fluorescent host was doped with BD as a blue dopant at a weight ratio of 95:5 on the electron blocking layer, thereby forming a light...

Embodiment 2

[0137] The device was fabricated in the same manner as in Example 1, except that NaNO in a weight ratio of 5:95 was used 3 and MoO 2 (acac) 2 The hole injection layer was prepared by dissolving in ethylene glycol monomethyl ether at a concentration of 4 wt %, and coating the resulting solution on the base material deposited with ITO at 1000 rpm, followed by heat treatment in an oxygen atmosphere. At this time, the thickness of the hole injection layer was 30 nm. The characteristics of the device are shown in Table 1.

Embodiment 3

[0139] A device was fabricated in the same manner as in Example 1, except that AgNO was added in a weight ratio of 0.5:99.5 3 and MoO 2 (acac) 2 The hole injection layer was prepared by dissolving in ethylene glycol monomethyl ether at a concentration of 4 wt %, and coating the resulting solution on the base material deposited with ITO at 1000 rpm, followed by heat treatment in an oxygen atmosphere. At this time, the thickness of the hole injection layer was 30 nm. The characteristics of the device are shown in Table 1.

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Abstract

The present specification relates to: a composition for coating a hole injection or transport layer or a charge generation layer of an organic electroluminescent device; a method for manufacturing anorganic electroluminescent device by using the same; and an organic electroluminescent device, the composition comprising: an organometallic complex containing one or more transition metals of groups5, 6 and 7; an organometallic complex or a metal salt containing one or more metals of groups 1, 8, 11 and 12; and an organic solvent.

Description

technical field [0001] This specification claims priority to and the benefit of Korean Patent Application No. 10-2016-0057050, filed with the Korean Intellectual Property Office on May 10, 2016, the entire contents of which are incorporated herein by reference. [0002] The present specification relates to a method for manufacturing an organic electroluminescent device and an organic electroluminescent device manufactured by the method. Background technique [0003] The phenomenon of organic luminescence is one of the examples of converting electric current into visible light through the internal process of specific organic molecules. The principle of the organic light-emitting phenomenon is as follows. When the organic material layer is disposed between the anode and the cathode, if a current is applied between the two electrodes, electrons and holes are injected into the organic material layer from the cathode and the anode, respectively. The electrons and holes injected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/00H01L51/56
CPCH10K71/15H10K71/12H10K85/30H10K85/351H10K85/371H10K50/155H10K50/17H10K50/19H10K71/40H10K85/344H10K2102/361H10K2102/351H10K50/00H10K71/00H10K99/00H10K50/15H10K71/441
Inventor 尹锡喜李东龟金禾景郑在学申旨娟金大虎裴在顺李载澈
Owner LG CHEM LTD