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Title:
LIGHT-EMITTING ELEMENT
Document Type and Number:
WIPO Patent Application WO/2017/061332
Kind Code:
A1
Abstract:
Provided is a light-emitting element having an excellent luminance life. This light-emitting element has a positive electrode, a negative electrode, a first organic layer, which is provided between the positive electrode and the negative electrode and which contains a phosphorescent light-emitting compound, and a second organic layer, which is provided between the positive electrode and the negative electrode and which contains a crosslinked product of a crosslinkable material and a phosphorescent light-emitting compound, wherein the phosphorescent light-emitting compound contained in the first organic layer and the phosphorescent light-emitting compound contained in the second organic layer contain the same phosphorescent light-emitting compound represented by formula (1) and the crosslinkable material is a compound represented by formula (3). [In the formulae, M denotes an iridium atom or the like, n1 is an integer of 1 or higher, and n2 is an integer of 0 or higher. E1 and E2 are carbon atoms or the like, ring L1 and ring L2 are aromatic heterocyclic rings or the like, and A1-G1-A2 is an anionic bidentate ligand.] [In the formulae, mB1 to mB3 are integers of 0 or higher, Ar7 is an aromatic hydrocarbon group or the like, LB1 is a divalent group or the like, and X'' is a crosslinkable group or the like.]

Inventors:
SASADA, Toshiaki (LIMITED 6, Kitahara, Tsukuba-sh, Ibaraki 94, 〒3003294, JP)
ANRYU, Makoto (LIMITED 5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 50, 〒5418550, JP)
AKINO, Nobuhiko (LIMITED 6, Kitahara, Tsukuba-sh, Ibaraki 94, 〒3003294, JP)
SAITO, Takakazu (LIMITED 6, Kitahara, Tsukuba-sh, Ibaraki 94, 〒3003294, JP)
Application Number:
JP2016/079042
Publication Date:
April 13, 2017
Filing Date:
September 30, 2016
Export Citation:
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Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED (27-1, Shinkawa 2-chome Chuo-k, Tokyo 60, 〒1048260, JP)
International Classes:
H01L51/50; C07F15/00; C08F2/44; C08F12/26; C09K11/06; H05B33/12
Domestic Patent References:
WO2013021180A12013-02-14
WO2013146806A12013-10-03
WO2015014427A12015-02-05
WO2015186539A12015-12-10
Foreign References:
JP2015174931A2015-10-05
JP2014029875A2014-02-13
JP2015174932A2015-10-05
JP2015174824A2015-10-05
JP2014508394A2014-04-03
Other References:
See also references of EP 3361521A4
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (LIMITED 5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 50, 〒5418550, JP)
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