发明申请
- 专利标题: ORGANIC ELECTROLUMINESCENCE ELEMENT AND MANUFACTURING METHOD THEREOF
- 专利标题(中): 有机电致发光元件及其制造方法
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申请号: US13362602申请日: 2012-01-31
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公开(公告)号: US20120178191A1公开(公告)日: 2012-07-12
- 发明人: Kei SAKANOUE , Takahiro KOMATSU , Takayuki TAKEUCHI , Kenji HARADA
- 申请人: Kei SAKANOUE , Takahiro KOMATSU , Takayuki TAKEUCHI , Kenji HARADA
- 申请人地址: JP Osaka
- 专利权人: PANASONIC CORPORATION
- 当前专利权人: PANASONIC CORPORATION
- 当前专利权人地址: JP Osaka
- 优先权: JPP2008-126112 20080513
- 主分类号: H01L51/56
- IPC分类号: H01L51/56
摘要:
To improve the light emission characteristics of a device when a transition metal oxide is used for the hole injection layer, in particular, to enhance the electron blocking characteristics of a transition metal oxide. An organic electroluminescence element comprising an anode, a cathode and a plurality of functional layers formed between the anode and the cathode, the functional layer containing a layer with a light-emitting function composed of at least one kind of an organic semiconductor and, between the anode and the layer with a light-emitting function, a charge injection layer composed of at least one kind of a transition metal oxide, wherein the ratio of the metal to oxygen at the anode side of the transition metal oxide layer is smaller than the stoichiometric ratio and at the same time, the ratio of the metal to oxygen at the layer with a light-emitting function side is greater than that at the anode side.
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