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    • 81. 发明专利
    • Organic electroluminescent device
    • 有机电致发光器件
    • JP2008294404A
    • 2008-12-04
    • JP2008065788
    • 2008-03-14
    • Canon Incキヤノン株式会社
    • OKINAKA KEIJIYASHIMA MASATAKAYAMADA NAOKISAITO AKITO
    • H01L51/50C07C13/62C07C211/61C09K11/06
    • C09B57/008C09B1/00C09B57/00C09B57/001
    • PROBLEM TO BE SOLVED: To provide an organic electroluminescent device for emitting blue light, which has high luminous efficiency and good drive durability.
      SOLUTION: The organic electroluminescent device 10 for emitting blue light includes an anode 2, a cathode 6, and a layer which contains an organic compound interposed between the anode 2 and the cathode 6, and the layer which contains the organic compound includes at least a light emitting layer 4. In the organic electroluminescent device 10, the light emitting layer 4 contains a bipolar host having a hole mobility and an electron mobility ≥10
      -4 cm
      2 /Vs, a light emitting dopant and a carrier trapping dopant, and the light emitting dopant energy gap E
      gB , the bipolar host energy gap E
      gh , and the carrier trapping dopant energy gap E
      gd are such that E
      gd >E
      gh >E
      gB .
      COPYRIGHT: (C)2009,JPO&INPIT
    • 解决的问题:提供发光效率高,驱动耐久性好的发出蓝光的有机电致发光元件。 解决方案:用于发射蓝光的有机电致发光器件10包括阳极2,阴极6和包含置于阳极2和阴极6之间的有机化合物的层,并且含有有机化合物的层包括 至少一个发光层4.在有机电致发光器件10中,发光层4包含具有空穴迁移率和电子迁移率的双极性主体,其中≥10 -4 SP> / Vs,发光掺杂剂和载流子俘获掺杂剂,以及发光掺杂剂能隙E SB SBB,双极性主体能隙E SBM,以及载体 捕获掺杂剂能隙E gd 是这样的,使得E / SB> gh > E gB 。 版权所有(C)2009,JPO&INPIT