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Title:
ORGANIC ELECTROLUMINESCENCE ELEMENT CONTAINING COMPOUND HAVING BENZOAZOLE RING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2019/026728
Kind Code:
A1
Abstract:
[Problem] The purpose of the present invention is to provide an organic EL element in which, as a highly efficient and highly durable organic EL material, various materials excelling in electron injection/transport performance, hole blocking performance, hole resistance performance, exciton confinement performance, stability in a film state, and durability, are combined so that properties of each material can be effectively demonstrated, thereby achieving (1) high luminous efficiency and power efficiency, (2) low luminescence starting voltage, (3) low practical driving voltage, and (4) particularly long service life. [Solution] An organic EL element having at least a positive electrode, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and a negative electrode in this order, wherein the organic EL element is characterized in that the hole blocking layer contains a compound having a benzoazole structure represented by general formula (1). (In the formula, Ar1 and Ar2 may be identical or different and represent a hydrogen atom, a deuterium atom, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted fused polycyclic aromatic group, or a substituted or unsubstituted aromatic heterocyclic group. Y1 represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted fused polycyclic aromatic group, or a substituted or unsubstituted aromatic heterocyclic group, a straight-chained or branched alkyl group that has 1-6 carbon atoms and that may have a substituent group, a cycloalkyl group that has 5-10 carbon atoms and that may have a substituent group, or a straight-chained or branched alkenyl group that has 2-6 carbon atoms and that may have a substituent group. X represents an oxygen atom or a sulfur atom. Z1 and Z2 may be identical or different and represent a carbon atom or a nitrogen atom).

Inventors:
KASE KOUKI (JP)
KABASAWA NAOAKI (JP)
MOCHIZUKI SHUNJI (JP)
SURUGA KAZUYUKI (JP)
Application Number:
PCT/JP2018/027928
Publication Date:
February 07, 2019
Filing Date:
July 25, 2018
Export Citation:
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Assignee:
HODOGAYA CHEMICAL CO LTD (JP)
International Classes:
H01L51/50; C07D263/56; C07D413/04; C07D413/14; C07D471/04; C09K11/06
Domestic Patent References:
WO2016153283A12016-09-29
WO2010126270A12010-11-04
WO2015190400A12015-12-17
WO2016111269A12016-07-14
WO2013054764A12013-04-18
WO2015038503A12015-03-19
WO2011059000A12011-05-19
WO2003060956A22003-07-24
WO2014009310A12014-01-16
Foreign References:
JP2010147115A2010-07-01
JP2010083862A2010-04-15
JP2011207794A2011-10-20
JPH0848656A1996-02-20
JP3194657B22001-07-30
JP2734341B21998-03-30
JP2010083862A2010-04-15
JPH07126615A1995-05-16
JP2005108804A2005-04-21
Other References:
THE JAPAN SOCIETY OF APPLIED PHYSICS, PROCEEDINGS OF THE NINTH WORKSHOP, 2001, pages 23 - 31
APPL.PHYS.LET., vol. 98, 2011, pages 083302
PROCEEDINGS OF THE 50TH MEETING OF THE JAPAN SOCIETY OF APPLIED PHYSICS AND RELATED SOCIETIES 28P-A-6, 2003, pages 1413
MOLECULAR ELECTRONICS AND BIOELECTRONICS, vol. 11, no. 1, 2000, pages 13 - 19
J.ORG.CHCM., vol. 71, 2006, pages 1802
J.ORG.CHCM., vol. 79, 2014, pages 6310
See also references of EP 3664173A4
Attorney, Agent or Firm:
OMORI, Junichi (JP)
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