Multi-component host material and an organic electroluminescence device comprising the same

a technology of organic electroluminescence and host material, which is applied in the direction of luminescent compositions, indium organic compounds, organic chemistry, etc., can solve the problems of failing to disclose an organic electroluminescent device, urgently developing an organic el device providing high efficiency and long lifespan, etc., and achieves long lifespan and high efficiency

Inactive Publication Date: 2022-07-07
ROHM & HAAS ELECTRONICS MATERIALS LLC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an organic electroluminescent device that has high efficiency and long lifespan. This device can be used in the manufacture of display devices or lighting devices.

Problems solved by technology

Recently, the development of an organic EL device providing high efficiency and long lifespan is an urgent issue.
However, the references fail to disclose an organic electroluminescent device using a multi-component host comprising a biscarbazole derivative and a carbazole derivative including a nitrogen-containing heteroaryl.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-component host material and an organic electroluminescence device comprising the same
  • Multi-component host material and an organic electroluminescence device comprising the same
  • Multi-component host material and an organic electroluminescence device comprising the same

Examples

Experimental program
Comparison scheme
Effect test

example 2-10

Device Preparation of an OLED Device by Co-Evaporating the First Host Compound and the Second Host Compound of the Present Invention

[0072]An OLED device was produced in the same manner as in Device Examples 1-1 to 1-6, except for forming the second hole injection layer of 3 nm; forming the first hole transport layer of 40 nm; not forming the second hole transport layer; doping compound D-136 as the dopant of the light-emitting layer in a doping amount of 15 wt % based on the total amount of the host and dopant; forming the electron transport layer of 35 nm by evaporating 2,4-bis(9,9-dimethyl-9H-fluoren-2-yl)-6-(naphthalen-2-yl)-1,3,5-triazine and lithium quinolate at a rate of 4:6; and using other combinations for the first host compound and the second host compound used in the host of the light-emitting layer.

Device Examples 3-1 to 3-3: Preparation of an OLED Device by Co-Evaporating the First Host Compound and the Second Host Compound of the Present Invention

[0073]An OLED device ...

example 3-4

Device Preparation of an OLED Device by Co-Evaporating the First Host Compound and the Second Host Compound of the Present Invention

[0074]An OLED device was produced in the same manner as in Device Examples 2-1 to 2-7, except for forming the first hole injection layer of 10 nm; forming the second hole transport layer of 30 nm using compound HT-3; using compound D-168 as the dopant of the light-emitting layer; and using other combinations for the first host compound and the second host compound used in the host of the light-emitting layer.

Comparative Examples 2-1 to 2-3: Preparation of an OLED Device Using Only the First Host Compound as a Host

[0075]An OLED device was produced in the same manner as in Device Examples 2-1 to 2-7, except for using only the first host compound as a host of the light-emitting layer.

Comparative Examples 3-1 to 3-3: Preparation of an OLED Device Using Only the Second Host Compound as a Host

[0076]An OLED device was produced in the same manner as in Device ...

example 4-1

Device Preparation of an OLED Device by Co-Evaporatinq the First Host Compound and the Second Host Compound of the Present Invention

[0081]An OLED device was produced in the same manner as in Device Examples 1-1 to 1-6, except for using compound HT-4 for the second hole transport layer, and using the compounds as listed in Table 3 below for the first host compound and the second host compound used in the host of the light-emitting layer.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
pressureaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a multi-component host material and an organic electroluminescent device comprising the same. By comprising a specific combination of the multi-component host compounds, the organic electroluminescent device according to the present invention can provide high luminous efficiency and excellent lifespan characteristics.

Description

CLAIM OF BENEFIT OF PRIOR APPLICATION[0001]This application claims priority under 35 U.S.C. § 120 from U.S. patent application Ser. No. 15 / 301,975, filed Oct. 5, 2016, which is the National Stage Entry of PCT / KR2015 / 003890, filed Apr. 17, 2015, both of which are incorporated by reference herein in their entirety.TECHNICAL FIELD[0002]The present invention relates to a multi-component host material and an organic electroluminescence device comprising the same.BACKGROUND ART[0003]An electroluminescence device (EL device) is a self-light-emitting device which has advantages in that it provides a wider viewing angle, a greater contrast ratio, and a faster response time. An organic EL device was first developed by Eastman Kodak, by using small aromatic diamine molecules, and aluminum complexes as materials for forming a light-emitting layer [Appl. Phys. Lett. 51, 913, 1987].[0004]An organic EL device (OLED) is a device changing electronic energy to light by applying electricity to an orga...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(United States)
IPC IPC(8): H01L51/00C09K11/06C07D209/86C07F15/00C09K11/02H10K99/00
CPCH01L51/0072H01L51/5016H01L51/0067H01L51/0073H01L51/0074H01L51/0085H01L51/0094C07D209/86C07F15/0033C09K11/025H01L51/0052H01L51/0071C09K2211/1007C09K2211/1029C09K2211/185C09K11/06C07D401/14C07D405/14C07D401/04C07D401/10C07D409/14C07D487/04C07D491/04C07D495/04C07D209/88H10K85/636H10K85/654H10K85/6576H10K85/6574H10K85/342H10K85/40H10K85/6572H10K50/156H10K2101/10H10K2101/90H10K50/12H10K85/615H10K85/657H10K50/11C09K2211/1088
InventorAHN, HEE-CHOONKIM, YOUNG-KWANGLEE, SU-HYUNJUN, JI-SONGLEE, SEON-WOOKIM, CHI-SIKPARK, KYOUNG-JINKIM, NAM-KYUNCHOI, KYUNG-HOONSHIM, JAE-HOONCHO, YOUNG-JUNLEE, KYUNG-JOO
OwnerROHM & HAAS ELECTRONICS MATERIALS LLC