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A novel combination of a host compound and a dopant compound and an organic electroluminescent device comprising the same

一种化合物、掺杂剂的技术，应用在有机电致发光装置领域，能够解决未能具体公开铱络合物等问题，达到优异发光效率和使用寿命的效果

Inactive Publication Date: 2017-08-18
ROHM & HAAS ELECTRONICS MATERIALS KOREA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they fail to specifically disclose a compound comprising an iridium complex having a phenylquinoline ligand as a dopant compound, and a carbazole derivative substituted with a 5- to 11-membered nitrogen-containing heteroaryl group as a host compound. Organic EL device

Method used

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  • A novel combination of a host compound and a dopant compound and an organic electroluminescent device comprising the same
  • A novel combination of a host compound and a dopant compound and an organic electroluminescent device comprising the same
  • A novel combination of a host compound and a dopant compound and an organic electroluminescent device comprising the same

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example 1

[0062] Device Example 1: Preparation of OLED Devices Comprising Dopants and Hosts of the Invention

[0063] OLED devices were fabricated using dopants and host compounds according to the invention. The transparent electrode indium tin oxide (ITO) film (10 Ω / sq) on the glass substrate of the organic light-emitting diode (OLED) device (Geomatec) was ultrasonically washed with trichlorethylene, acetone, ethanol, and distilled water in sequence, and then stored in in isopropanol. The ITO substrate was then mounted on the substrate holder of the vacuum vapor deposition equipment. Will N 4 ,N 4' -Diphenyl-N 4 ,N 4' -Bis(9-phenyl-9H-carbazol-3-yl)-[1,1'-biphenyl]-4,4'-diamine (compound HI-1) introduced into the vacuum vapor deposition equipment unit, and then control the pressure in the chamber of the device to 10 -6 support. Thereafter, a current was applied to the cell to evaporate the material introduced above, thereby forming a first hole injection layer with a thickness...

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Abstract

The invention discloses a novel combination of a host compound and a dopant compound and an organic electroluminescent device comprising the same. Disclosed herein are combinations of a dopant compound and a host compound. The dopant being an Iridium complex and the host being a carbazole derivative. Also made known are electroluminescent devices comprising the same.

Description

technical field [0001] The present invention relates to novel combinations of host compounds and dopant compounds and organic electroluminescent devices comprising the same. Background technique [0002] An electroluminescent device (EL device) is a self-luminous device, which is advantageous in that it provides a wider viewing angle, a larger contrast ratio, and a faster response time. The first organic EL device was developed by Eastman Kodak by using small aromatic diamine molecules and an aluminum complex as materials for forming a light emitting layer [Appl. Phys. Lett. 51, 913, 1987]. [0003] The most important factor determining the luminous efficiency in an organic EL device is the luminescent material. According to their functions, light emitting materials can be classified into host materials and dopant materials. In general, devices exhibiting the best electroluminescence characteristics have a structure comprising a light emitting layer in which a dopant is do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06
CPCC07D209/86C09K11/06C09K2211/1007C09K2211/1011C09K2211/1014C09K2211/1029C09K2211/1033C09K2211/1037C09K2211/1044C09K2211/1059C09K2211/1088C09K2211/1092C09K2211/185H10K85/615H10K85/626H10K85/654H10K85/6576H10K85/342H10K85/6572H10K50/11H10K2101/10H10K50/156H10K2101/90H10K85/6574H10K50/12C09K2211/1066C09K2211/107
Inventor 金炫姜熙龙张诚佑金宾瑞
Owner ROHM & HAAS ELECTRONICS MATERIALS KOREA LTD