发明申请
- 专利标题: LIGHT EMITTING DEVICE
- 专利标题(中): 发光装置
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申请号: US12793735申请日: 2010-06-04
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公开(公告)号: US20100237342A1公开(公告)日: 2010-09-23
- 发明人: Hiroko YAMAZAKI , Atsushi TOKUDA , Tetsuo TSUTSUI
- 申请人: Hiroko YAMAZAKI , Atsushi TOKUDA , Tetsuo TSUTSUI
- 申请人地址: JP Atsugi-shi
- 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 Atsugi-shi
- 优先权: JP2001-360500 20011127
- 主分类号: H01L51/54
- IPC分类号: H01L51/54
摘要:
A triplet light emitting device which has high efficiency and improved stability and which can be fabricated by a simpler process is provided by simplifying the device structure and avoiding use of an unstable material. In a multilayer device structure using no hole blocking layer conventionally used in a triplet light emitting device, that is, a device structure in which on a substrate, there are formed an anode, a hole transporting layer constituted by a hole transporting material, an electron transporting and light emitting layer constituted by an electron transporting material and a dopant capable of triplet light emission, and a cathode, which are laminated in the stated order, the combination of the hole transporting material and the electron transporting material and the combination of the electron transporting material and the dopant material are optimized.
公开/授权文献
- US08610109B2 Light emitting device 公开/授权日:2013-12-17