公开(公告)号：US09666822B2

公开(公告)日：2017-05-30

申请号：US14537414

申请日：2014-11-10

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Yifan Zhang

IPC: H01L33/02 ,  H01L51/50 ,  H01L51/00

CPC classification number: H01L51/5024 ,  H01L51/0072 ,  H01L51/0085 ,  H01L51/5004 ,  H01L51/5016 ,  H01L51/5072 ,  H01L51/5088 ,  H01L2251/5346 ,  H01L2251/5384

Abstract: This disclosure relates, at least in part, an organic light emitting device, which in some embodiments comprises an anode; a cathode; a first emissive layer disposed between the anode and the cathode, the first emissive layer comprising an electron transporting compound and a phosphorescent emissive dopant compound; and wherein the phosphorescent emissive dopant compound has a concentration gradient, in the emissive layer, which varies from the cathode side of the first emissive layer to the anode side of the emissive layer.

公开(公告)号：US20140326972A1

公开(公告)日：2014-11-06

申请号：US14268398

申请日：2014-05-02

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Yifan Zhang

IPC: H01L51/50

CPC classification number: H01L51/5016 ,  H01L2251/55

Abstract: An organic light emitting device including a) an anode; b) a cathode; and c) an emissive layer disposed between the anode and the cathode, the emissive layer comprising an organic host compound and a phosphorescent compound exhibiting a Stokes Shift overlap greater than 0.3 eV. The organic light emitting device may further include a hole transport layer disposed between the emissive layer and the anode; and an electron transport layer disposed between the emissive layer and the cathode. In some embodiments, the phosphorescent compound exhibits a phosphorescent lifetime of less than 10 μs. In some embodiments, the concentration of the phosphorescent compound ranges from 0.5 wt. % to 10 wt. %.

Abstract translation: 一种有机发光装置，包括：a）阳极; b）阴极; 和c）设置在阳极和阴极之间的发射层，发射层包含有机主体化合物和表现出大于0.3eV的斯托克斯位移重叠的磷光化合物。 有机发光器件还可以包括设置在发光层和阳极之间的空穴传输层; 以及设置在发光层和阴极之间的电子传输层。 在一些实施方案中，磷光化合物表现出小于10μs的磷光寿命。 在一些实施方案中，磷光化合物的浓度范围为0.5wt。 ％〜10重量％ ％。

公开(公告)号：US09184402B2

公开(公告)日：2015-11-10

申请号：US14268398

申请日：2014-05-02

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Yifan Zhang

IPC: H01L51/54 ,  H01L51/50

CPC classification number: H01L51/5016 ,  H01L2251/55

Abstract: An organic light emitting device including a) an anode; b) a cathode; and c) an emissive layer disposed between the anode and the cathode, the emissive layer comprising an organic host compound and a phosphorescent compound exhibiting a Stokes Shift overlap greater than 0.3 eV. The organic light emitting device may further include a hole transport layer disposed between the emissive layer and the anode; and an electron transport layer disposed between the emissive layer and the cathode. In some embodiments, the phosphorescent compound exhibits a phosphorescent lifetime of less than 10 μs. In some embodiments, the concentration of the phosphorescent compound ranges from 0.5 wt. % to 10 wt. %.

Abstract translation: 一种有机发光器件，包括：a）阳极; b）阴极; 和c）设置在阳极和阴极之间的发射层，发射层包含有机主体化合物和表现出大于0.3eV的斯托克斯位移重叠的磷光化合物。 有机发光器件还可以包括设置在发光层和阳极之间的空穴传输层; 以及设置在发光层和阴极之间的电子传输层。 在一些实施方案中，磷光化合物表现出小于10μs的磷光寿命。 在一些实施方案中，磷光化合物的浓度范围为0.5wt。 ％〜10重量％ ％。

公开(公告)号：US20150171359A1

公开(公告)日：2015-06-18

申请号：US14537414

申请日：2014-11-10

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Yifan Zhang

IPC: H01L51/50 ,  H01L51/00

CPC classification number: H01L51/5024 ,  H01L51/0072 ,  H01L51/0085 ,  H01L51/5004 ,  H01L51/5016 ,  H01L51/5072 ,  H01L51/5088 ,  H01L2251/5346 ,  H01L2251/5384

Abstract: This disclosure relates, at least in part, an organic light emitting device, which in some embodiments comprises an anode; a cathode; a first emissive layer disposed between the anode and the cathode, the first emissive layer comprising an electron transporting compound and a phosphorescent emissive dopant compound; and wherein the phosphorescent emissive dopant compound has a concentration gradient, in the emissive layer, which varies from the cathode side of the first emissive layer to the anode side of the emissive layer.

Abstract translation: 本公开至少部分地涉及有机发光器件，其在一些实施例中包括阳极; 阴极 设置在阳极和阴极之间的第一发射层，第一发射层包括电子传输化合物和磷光发光掺杂剂化合物; 并且其中所述磷光发光掺杂剂化合物在所述发射层中具有从所述第一发光层的阴极侧到所述发射层的阳极侧变化的浓度梯度。