发明申请
- 专利标题: Organic electroluminescence device
- 专利标题(中): 有机电致发光器件
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申请号: US12289590申请日: 2008-10-30
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公开(公告)号: US20090072732A1公开(公告)日: 2009-03-19
- 发明人: Takashi Arakane , Toshihiro Iwakuma , Chishio Hosokawa
- 申请人: Takashi Arakane , Toshihiro Iwakuma , Chishio Hosokawa
- 申请人地址: JP Chiyoda-ku
- 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 Chiyoda-ku
- 优先权: JP2003-016505 20040305
- 主分类号: H01J1/63
- IPC分类号: H01J1/63
摘要:
An organic electroluminescence device comprising a cathode, an anode and, sandwiched between the cathode and the anode, at least a hole transporting layer and a light emitting layer containing a phosphorescent light emitting material and a host material, wherein the hole transporting layer comprises a hole transporting material having a triplet energy of 2.52 to 3.70 eV and a hole mobility of 10−6 cm2/Vs or higher as measured at a field intensity of 0.1 to 0.6 MV/cm. Thus, the organic electroluminescence device utilizing a phosphorescent light emission according to the present invention can exhibit a favorable current efficiency and a long lifetime.
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