公开(公告)号：US20130146850A1

公开(公告)日：2013-06-13

申请号：US13678609

申请日：2012-11-16

Applicant: LG Display Co., Ltd.

Inventor： Sung-Hoon Pieh ,  Chang-Wook Han ,  Hong-Seok Choi ,  Jeong-Dae Seo ,  Ki-Woog Song

IPC: H01L51/52

CPC classification number: H01L51/5203 ,  H01L27/3209 ,  H01L51/0055 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/5044 ,  H01L51/5278

Abstract: A tandem white organic light emitting device with improved efficiency, voltage and lifetime includes a first electrode and a second electrode opposing each other, a charge generation layer formed between the first electrode and the second electrode, a first stack disposed between the first electrode and the charge generation layer, the first stack including a first light emitting layer emitting blue light, and a second stack disposed between the charge generation layer and the second electrode, the second stack including a second light emitting layer including one or more hosts doped with a phosphorescent dopant emitting light having a longer wavelength than blue light, wherein the charge generation layer includes an n-type charge generation layer doped with a metal and a p-type charge generation layer made of an organic material.

Abstract translation: 具有提高的效率，电压和寿命的串联白色有机发光器件包括彼此相对的第一电极和第二电极，形成在第一电极和第二电极之间的电荷产生层，设置在第一电极和第二电极之间的第一堆叠 电荷产生层，第一堆叠包括发射蓝光的第一发光层和设置在电荷产生层和第二电极之间的第二堆叠，第二堆叠包括第二发光层，第二发光层包括掺杂有磷光体的一个或多个主体 掺杂剂发射具有比蓝光更长的波长的光，其中电荷产生层包括掺杂有金属的n型电荷产生层和由有机材料制成的p型电荷产生层。