公开(公告)号：US20160133867A1

公开(公告)日：2016-05-12

申请号：US14903097

申请日：2014-07-03

Applicant: JOLED INC.

Inventor： Yoshiki HAYASHIDA ,  Takayuki SHIMAMURA ,  Jun HASHIMOTO ,  Makoto KIMURA ,  Hiroyuki MASUDA

IPC: H01L51/50 ,  H01L51/52

CPC classification number: H01L51/5076 ,  H01L51/5253

Abstract: An organic electroluminescence (EL) element that has an anode; a cathode; an organic light-emitting layer between the anode and the cathode that emits light according to recombination of holes injected from the anode and electrons injected from the cathode; and an electron transport layer between the cathode and the organic light-emitting layer that transports electrons from the cathode to the organic light-emitting layer. The electron transport layer includes an n-type dopant that includes an electron-donating substance, the electron transport layer being doped with the n-type dopant at a doping concentration that is higher than a doping concentration at which light emittance efficiency of the organic light-emitting layer is greatest.

Abstract translation: 具有阳极的有机电致发光（EL）元件; 阴极 阳极和阴极之间的有机发光层根据从阳极注入的空穴和从阴极注入的电子的复合发光; 以及在阴极和有机发光层之间的电子传输层，其将电子从阴极传输到有机发光层。 电子传输层包括n型掺杂剂，其包括给电子物质，电子传输层掺杂有n型掺杂剂，掺杂浓度高于有机光的光发射效率的掺杂浓度 发光层最大。