公开(公告)号：US20150028311A1

公开(公告)日：2015-01-29

申请号：US14360922

申请日：2011-11-28

申请人： Mingjie Zhou ,  Ping Wabg ,  Hui Huang ,  Xiaoming Feng

发明人： Mingjie Zhou ,  Ping Wabg ,  Hui Huang ,  Xiaoming Feng

IPC分类号： H01L51/50 ,  H01L51/00 ,  H01L51/56

CPC分类号： H01L51/5096 ,  H01L51/002 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/007 ,  H01L51/0072 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/5012 ,  H01L51/5056 ,  H01L51/506 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/56 ,  H01L2051/0063

摘要： Disclosed is a doped organic electroluminescent device, comprising the following structures laminated in succession: a conductive anode substrate, a hole injecting layer, a hole transportation layer, an electron barrier layer, a light-emitting layer, an electron transportation layer, an electron injecting layer and a cathode; and the material for the electron barrier layer is a hole transportation material doped with a cerium salt. The material for an electron barrier layer in such a doped organic electroluminescent device is a hole transportation material doped with a cerium salt which has a low work function of approximately −2.0 eV and can effectively block electrons. By doping the cerium salt having a low work function into the hole transportation material as the electron barrier layer, the LUMO energy level of the hole transportation material is greatly increased, thereby elevating the potential barrier between the electron barrier layer and the light-emitting layer, so that it is difficult for the electrons to transit to the side of the hole transportation layer and a good electron barrier effect is achieved. The present invention also provides a method for preparing the doped organic electroluminescent device.

摘要翻译： 公开了一种掺杂有机电致发光器件，其包括以下结构：依次层压：导电阳极衬底，空穴注入层，空穴传输层，电子势垒层，发光层，电子传输层，电子注入 层和阴极; 并且用于电子阻挡层的材料是掺杂有铈盐的空穴传输材料。 这种掺杂的有机电致发光器件中的电子势垒层的材料是掺杂有铈盐的空穴传输材料，其具有大约-2.0eV的低功函数并且可以有效地阻挡电子。 通过将具有低功函数的铈盐作为电子阻挡层掺杂到空穴传输材料中，空穴传输材料的LUMO能级大大增加，从而提高电子势垒层和发光层之间的势垒 使得电子难以转移到空穴传输层的侧面并且实现良好的电子势垒效应。 本发明还提供了一种制备掺杂有机电致发光器件的方法。