- 专利标题: ORGANIC ELECTROLUMINESCENT ELEMENT
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申请号: US17785348申请日: 2020-12-11
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公开(公告)号: US20230113101A1公开(公告)日: 2023-04-13
- 发明人: Junya OGAWA , Masashi TADA , Takahiro KAI , Kazunari YOSHIDA , Ikumi KITAHARA
- 申请人: NIPPON STEEL Chemical & Material Co., Ltd.
- 申请人地址: JP Tokyo
- 专利权人: NIPPON STEEL Chemical & Material Co., Ltd.
- 当前专利权人: NIPPON STEEL Chemical & Material Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2019-238535 20191227
- 国际申请: PCT/JP2020/046181 WO 20201211
- 主分类号: H01L51/00
- IPC分类号: H01L51/00 ; H01L51/50
摘要:
To provide an organic electroluminescent device having high efficiency while having a driving voltage. This organic electroluminescent device includes an anode, an organic layer and a cathode stacked on a substrate, at least one layer of the organic layer is a light-emitting layer containing a first host, a second host and a light-emitting dopant material, the first host is selected from a compound represented by the following general formula (1), and the second host is selected from a biscarbazole compound binding at a position other than the N-position, an indolocarbazole compound, or a carbazole compound in which a plurality of carbazole rings bind at the N-position. In the formula, a ring A is represented by formula (1b) or (1c), X represents NR, S, O, or CR2, and at least one Y represents N.
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