发明申请
- 专利标题: Organic element for low voltage electroluminescent devices
- 专利标题(中): 低电压电致发光器件的有机元件
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申请号: US11258719申请日: 2005-10-26
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公开(公告)号: US20070092754A1公开(公告)日: 2007-04-26
- 发明人: William Begley , Tukaram Hatwar , Natasha Andrievsky
- 申请人: William Begley , Tukaram Hatwar , Natasha Andrievsky
- 专利权人: Eastman Kodak Company
- 当前专利权人: Eastman Kodak Company
- 主分类号: H01L51/54
- IPC分类号: H01L51/54
摘要:
An OLED device comprises a cathode, a light emitting layer and an anode, in that order, and comprising; (i) in the light-emitting layer at least one light emitting compound selected from amine containing monostyryl, amine containing distyryl, amine containing tristyryl and amine containing tetrastyryl compounds, and (ii) a further layer located between the cathode and the light emitting layer, containing (a) 10-volume % or more of a carbocyclic fused ring aromatic compound, and (b) at least one salt or complex of a Group IA, IIA, IIIA or IIB element of the Periodic Table. Such devices exhibit reduce drive voltage while maintaining good luminance.