公开(公告)号：US20150060794A1

公开(公告)日：2015-03-05

申请号：US14310118

申请日：2014-06-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Eon Seok OH ,  Sol Ji KIM ,  Min Seong YI ,  Bo Mi CHOI

IPC: H01L51/56 ,  H01L51/50

Abstract: An organic light emitting device includes an anode, a cathode, and an organic layer between the anode and the cathode, wherein the organic layer includes an emission layer, an electron transport layer, and an assistance layer interposed therebetween, and the assistance layer has a higher HOMO level than the electron transport layer by more than 0.3 eV. The accumulation of holes in the electron transport layer is decreased or prevented by the gap of the HOMO level between the assistance layer and the electron transport layer such that the lifetime of the organic light emitting device may be increased.

Abstract translation: 有机发光器件包括在阳极和阴极之间的阳极，阴极和有机层，其中有机层包括发射层，电子传输层和辅助层之间，辅助层具有 比电子传输层更高的HOMO能级超过0.3eV。 通过辅助层和电子传输层之间的HOMO能级的间隙减小或防止电子传输层中的空穴的累积，使得有机发光器件的寿命可能增加。