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1. (WO2017154884) LIGHT-EMITTING ELEMENT

Pub. No.:    WO/2017/154884    International Application No.:    PCT/JP2017/008951
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Wed Mar 08 00:59:59 CET 2017
IPC: H01L 51/50
C09K 11/06
C07F 15/00
Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED
住友化学株式会社
Inventors: SASADA, Toshiaki
佐々田 敏明
ASADA, Kohei
浅田 浩平
FUKUSHIMA, Daisuke
福島 大介
TANAKA, Shin-ya
田中 慎也
Title: LIGHT-EMITTING ELEMENT
Abstract:
Provided is a light-emitting element having excellent external quantum efficiency. This light-emitting element comprises a positive electrode, a negative electrode, and a first organic layer and a second organic layer provided between the positive electrode and the negative electrode, wherein: the first organic layer is a layer including a metal complex represented by formula (1), and a compound represented by formula (H); and the second organic layer is a layer including a crosslinked product of a crosslinking material. (In formula (1), M represents an iridium atom etc., n1 represents an integer of 1 or greater, n2 represents an integer of 0 or greater, E1 and E2 each represent a carbon atom etc., ring L1 represents an aromatic heterocycle, ring L2 represents an aromatic hydrocarbon ring etc., at least one of ring L1 and ring L2 includes a dendron, and A1-G1-A2 represents an anionic bidentate ligand.) (In formula (H), nH1 represents an integer from 0 to 5, nH2 represents an integer from 1 to 10, ArH1 represents a specific monovalent heterocyclic group, LH1 represents an alkylene group, an arylene group, etc., and ArH2 is a nitrogen-containing heterocyclic group including an sp2 nitrogen atom as a ring-constituting atom.)