公开(公告)号：US11532790B2

公开(公告)日：2022-12-20

申请号：US16500872

申请日：2018-04-20

申请人： Sumitomo Chemical Company, Limited

发明人： Toshiaki Sasada ,  Naoki Hayashi ,  Shinichi Inakazu

IPC分类号： C07D209/86 ,  H01L51/00 ,  C07D219/02 ,  C07D279/22 ,  C07D307/91 ,  C07D333/76 ,  C07F15/00 ,  C08G61/12 ,  C09K11/06 ,  H01L51/50

摘要： A composition which is useful for producing a light emitting device having excellent external quantum efficiency contains two or more compounds represented by the formula (C-1) and a phosphorescent compound, in which at least one of the compounds represented by the formula (C-1) is a compound in which RC is a group represented by the formula (C′-1). Ring R1C and Ring R2C represent an aromatic hydrocarbon ring or an aromatic hetero ring. RC represents an oxygen atom, a sulfur atom or a group represented by the formula (C′-1). Ring R3C and Ring R4C represent an aromatic hydrocarbon ring or an aromatic hetero ring. RC′ represents a carbon atom, a silicon atom, a germanium atom, a tin atom or a lead atom.