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1. (WO2018198973) COMPOSITION AND LIGHT-EMITTING ELEMENT USING SAME

Pub. No.:    WO/2018/198973    International Application No.:    PCT/JP2018/016308
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Apr 21 01:59:59 CEST 2018
IPC: H05B 33/14
C07D 209/86
C07D 213/26
C07D 213/78
C07D 251/14
C07D 333/76
C07D 409/14
C09K 11/06
H01L 51/50
Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED
住友化学株式会社
Inventors: SASADA, Toshiaki
佐々田 敏明
HAYASHI, Naoki
林 直樹
INAKAZU, Shinichi
稲員 慎一
Title: COMPOSITION AND LIGHT-EMITTING ELEMENT USING SAME
Abstract:
Provided is a composition that is useful for producing a light-emitting element having excellent external quantum efficiency. Disclosed is a composition comprising at least two types of compounds represented by formula (C-1), and a phosphorescent compound, wherein at least one type of compound among said at least two types of compounds represented by formula (C-1) is a compound in which RC in the compound represented by formula (C-1) is a group represented by formula (C'-1). (In formula (C-1), ring R1C and ring R2C represent an aromatic hydrocarbon ring or an aromatic heterocycle. RC represents an oxygen atom, a sulfur atom, or a group represented by formula (C'-1).) (In formula (C'-1), ring R3C and ring R4C represent an aromatic hydrocarbon ring or an aromatic heterocycle. RC' represents a carbon atom, a silicon atom, a germanium atom, a tin atom, or a lead atom.)