发明申请
- 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: US10951287申请日: 2004-09-28
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公开(公告)号: US20050112404A1公开(公告)日: 2005-05-26
- 发明人: Yuji Hamada , Kazuki Nishimura , Hiroshi Kanno
- 申请人: Yuji Hamada , Kazuki Nishimura , Hiroshi Kanno
- 优先权: JP2003-342593 20030930
- 主分类号: H01L51/50
- IPC分类号: H01L51/50 ; C09K11/06 ; H01L51/00 ; H05B33/12 ; H05B33/14 ; H05B33/20 ; H05B33/22
摘要:
In an organic electroluminescent element provided with a blue light-emitting layer and an orange light-emitting layer as a light-emitting layer between a hole injection electrode and an electron injection electrode, the blue light-emitting layer contains a host material, a light-emitting dopant and an assist dopant supplementing the carrier transfer of the host material. When the host material is an electron transfer material, an assist dopant has a smaller absolute value of highest occupied molecular orbital (HOMO) energy level than that of the host material and has a higher hole mobility than that of the host material.