发明申请
- 专利标题： Light-Emitting Element, Light-Emitting Device, Electronic Device, and Lighting Device
- 专利标题（中）： 发光元件，发光装置，电子装置和照明装置
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申请号： US14029208申请日： 2013-09-17
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公开(公告)号： US20140084273A1公开(公告)日： 2014-03-27
- 发明人: Tomonori Nakayama , Takako TAKASU , Satoko SHITAGAKI , Harue OSAKA , Toshiki HAMADA
- 申请人： Semiconductor Energy Laboratory Co., Ltd.
- 申请人地址： JP Kanagawa-ken
- 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 Kanagawa-ken
- 优先权： JP2012-208080 20120921
- 主分类号： H01L51/00
- IPC分类号： H01L51/00
摘要：
A light-emitting element emitting phosphorescence and having high emission efficiency, in which a property of injecting holes to a light-emitting layer is increased, is provided. The light-emitting layer of the light-emitting element includes a first organic compound represented by the following general formula (G1) and a second organic compound which is a phosphorescent compound. The difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is lower than or equal to 0.3 eV.