发明名称 |
Stable blue phosphorescent organic light emitting devices |
摘要 |
Novel combination of materials and device architectures for organic light emitting devices is provided. An organic light emitting device, is provided, having an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer includes a host and a phosphorescent emissive dopant having a peak emissive wavelength less than 500 nm, and a radiative phosphorescent lifetime less than 1 microsecond. Preferably, the phosphorescent emissive dopant includes a ligand having a carbazole group. |
申请公布号 |
US8815411(B2) |
申请公布日期 |
2014.08.26 |
申请号 |
US200812257638 |
申请日期 |
2008.10.24 |
申请人 |
The Regents of the University of Michigan;University of Southern California |
发明人 |
Forrest Stephen R.;Thompson Mark;Giebink Noel |
分类号 |
H01L51/54;C09K11/06;H01L51/50;H01L51/00;C07F15/00 |
主分类号 |
H01L51/54 |
代理机构 |
Morgan, Lewis & Bockius LLP |
代理人 |
Morgan, Lewis & Bockius LLP |
主权项 |
1. An organic light emitting device, comprising:
an anode, a cathode, an emissive layer disposed between the anode and the cathode, the emissive layer further comprising a host and a phosphorescent emissive dopant; wherein the phosphorescent emissive dopant is selected from the group consisting of: where R1-R4 are independently selected from the group consisting of: H, aryl and alkyl, where the aryl and alkyl may be further substituted, Ar is an aryl that may be further substituted, and M is a metal having an atomic weight greater than 40. |
地址 |
Ann Arbor MI US |