- 专利标题: ORGANIC ELECTROLUMINESCENT ELEMENT
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申请号: EP20870973.3申请日: 2020-09-16
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公开(公告)号: EP4039680A1公开(公告)日: 2022-08-10
- 发明人: OGAWA, Junya , KAI, Takahiro , TADA, Masashi , YOSHIDA, Kazunari
- 申请人: NIPPON STEEL Chemical & Material Co., Ltd.
- 申请人地址: JP Tokyo 103-0027 13-1, Nihonbashi 1-chome, Chuo-ku,
- 代理机构: Vossius & Partner Patentanwälte Rechtsanwälte mbB
- 优先权: JP2019180499 20190930
- 国际公布: WO2021065492 20210408
- 主分类号: C07D401/14
- IPC分类号: C07D401/14 ; C09K11/06 ; C07D209/86 ; H05B33/10 ; H01L51/50
摘要:
To provide an organic electroluminescent device having high efficiency and high driving stability while having a low driving voltage. The organic electroluminescent device has one or more light-emitting layers between an anode and a cathode opposed to each other, wherein at least one of the light-emitting layers is a light-emitting layer composed of a vapor deposition layer containing a first host, a second host and a light-emitting dopant material; the first host is selected from oligopyridine compounds represented by the general formula (1); and the second host is selected from carbazole compounds having two or more carbazole rings, indolocarbazole compounds having an indolocarbazole ring or compounds having a carbazole ring and an indolocarbazole ring.
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