发明授权
- 专利标题: Organic electroluminescent element
- 专利标题(中): 有机电致发光元件
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申请号: US13258693申请日: 2010-03-23
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公开(公告)号: US08604466B2公开(公告)日: 2013-12-10
- 发明人: Jun Endo , Chishio Hosokawa , Toshihiro Iwakuma
- 申请人: Jun Endo , Chishio Hosokawa , Toshihiro Iwakuma
- 申请人地址: JP Tokyo
- 专利权人: Idemitsu Kosan Co., Ltd.
- 当前专利权人: Idemitsu Kosan Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2009-072927 20090324
- 国际申请: PCT/JP2010/055007 WO 20100323
- 国际公布: WO2010/110277 WO 20100930
- 主分类号: H01L35/24
- IPC分类号: H01L35/24
摘要:
Provided is an organic electroluminescence device that has solved the conventional problems, and is thermally and chemically stable, has high efficiency with which an electron is injected from a cathode layer or an intermediate conductive layer to a light emitting layer, provides high luminous efficiency at a low voltage, and can maintain a long lifetime. Specifically, the organic electroluminescence device is an organic electroluminescence device, including: two electrode layers and optionally one or more intermediate conductive layers; a light emitting layer between the electrode layers, or between one of the electrode layers and the intermediate conductive layer and/or between the intermediate conductive layers; and an electron injection region formed of one or two or more layers between the light emitting layer and the cathode layer and/or between the light emitting layer and the intermediate conductive layer, in which at least one layer in the electron injection region contains at least one kind selected from the group consisting of an oxide of a transition metal belonging to any one of Groups 5 to 8 of the periodic table, a nitrogen-containing heterocyclic derivative, and a chalcogenide, and further contains a compound represented by the formula: MxAOy (in the formula, M represents Li, Na, K, Rb, or Cs, A represents Zr, V, Nb, Ta, Si, or Ge, x represents 1 or 2, and y represents an integer of 1 to 4).
公开/授权文献
- US20120037895A1 ORGANIC ELECTROLUMINESCENT ELEMENT 公开/授权日:2012-02-16
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