发明授权
- 专利标题: Carbazole derivative with heteroaromatic ring, and light-emitting element, light-emitting device, and electronic device using carbazole derivative with heteroaromatic ring
- 专利标题(中): 具有杂芳环的咔唑衍生物,发光元件,发光装置和使用具有杂芳环的咔唑衍生物的电子器件
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申请号: US12725696申请日: 2010-03-17
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公开(公告)号: US08247575B2公开(公告)日: 2012-08-21
- 发明人: Hiroko Nomura , Sachiko Kawakami , Nobuharu Ohsawa , Satoshi Seo
- 申请人: Hiroko Nomura , Sachiko Kawakami , Nobuharu Ohsawa , Satoshi Seo
- 申请人地址: JP
- 专利权人: Semiconductor Energy Laboratory Co., Ltd.
- 当前专利权人: Semiconductor Energy Laboratory Co., Ltd.
- 当前专利权人地址: JP
- 代理机构: Husch Blackwell LLP
- 优先权: JP2009-069177 20090320
- 主分类号: C07D271/10
- IPC分类号: C07D271/10 ; B32B9/00 ; H01J1/62
摘要:
Disclosed is a carbazole derivative and a light-emitting element, a light-emitting device, and an electronic device using thereof. The carbazole derivative possesses an oxadiazole moiety or a quinoxaline moiety as a heteroaromatic ring having an electron-transporting property and a carbazole moiety having a hole-transporting property. The ability of the carbazole derivative to transport both electrons and holes and its large excitation energy larger than a triplet excitation energy of a phosphorescent compound allow the formation of a phosphorescent light-emitting element having well-controlled carrier balance, which contributes to the formation of light-emitting devices and electronic devices that are capable of being driven at a low voltage, have a long lifetime, and consume low power. The detailed structure of the carbazole derivative is defined in the specification.
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