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Title:
MULTI-COMPONENT HOST MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
Document Type and Number:
WIPO Patent Application WO/2016/208873
Kind Code:
A1
Abstract:
The present invention relates to an organic electroluminescent device comprising at least one light-emitting layer between an anode and a cathode, wherein the light-emitting layer comprises a host and a phosphorescent dopant; the host comprises plural host compounds; at least a first host compound of the plural host compounds has a structure of a nitrogen-containing heterocyclic linker bonded to a nitrogen atom of a carbazole of an indole-carbazole, indene-carbazole, benzofuran-carbazole, or benzothiophene-carbazole residue; and a second host compound has a carbazole-aryl-carbazole or carbazole-carbazole structure. According to the present invention, by using a specific multi-component host different from the conventional organic electroluminescent device, an organic electroluminescent device of significantly improved lifespan is provided.

Inventors:
PARK KYOUNG-JIN (KR)
KIM BITNARI (KR)
DOH YOO-JIN (KR)
KANG HYUN-JU (KR)
LIM YOUNG-MOOK (KR)
LEE SU-HYUN (KR)
KIM CHI-SIK (KR)
Application Number:
PCT/KR2016/005098
Publication Date:
December 29, 2016
Filing Date:
May 13, 2016
Export Citation:
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Assignee:
ROHM & HAAS ELECT MATERIALS KOREA LTD (KR)
International Classes:
C09K11/06; H01L27/32; H01L51/54
Domestic Patent References:
WO2014038867A12014-03-13
WO2015156587A12015-10-15
WO2015156587A12015-10-15
WO2015156587A12015-10-15
Foreign References:
US20150236262A12015-08-20
KR20150003658A2015-01-09
KR101502316B12015-03-13
EP16814586A2016-05-13
US20150236262A12015-08-20
US20140197386A12014-07-17
US20110315975A12011-12-29
Other References:
EASTMAN KODAK: "using small aromatic diamine molecules, and aluminum complexes as materials for forming a light-emitting layer", APPL. PHYS. LETT., vol. 51, 1987, pages 913
See also references of EP 3313958A4
Attorney, Agent or Firm:
CHANG, Hoon (Korean Re Bldg. 5F 68, Jong-ro 5-gil,Jongno-gu, Seoul, KR)
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