| 发明名称 |
OLED HAVING MULTI-COMPONENT EMISSIVE LAYER |
| 摘要 |
Organic light-emitting devices having a multi-component organic electroluminescent layer. The organic electroluminescent layer comprises a phosphorescent dopant and a host material that is a mixture of at least three different compounds: a wide band gap host compound, an electron-transporting host compound, and a hole-transporting host compound. Use of such a multi-component organic electroluminescent layer may improve device efficiency and lifetime. |
| 申请公布号 |
US2014197389(A1) |
申请公布日期 |
2014.07.17 |
| 申请号 |
US201114113529 |
申请日期 |
2011.05.27 |
| 申请人 |
Adamovich Vadim;Yamamoto Hitoshi;Weaver Michael S.;Xia Chuanjun |
发明人 |
Adamovich Vadim;Yamamoto Hitoshi;Weaver Michael S.;Xia Chuanjun |
| 分类号 |
H01L51/50;H01L51/56 |
主分类号 |
H01L51/50 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An organic light-emitting device comprising:
an anode electrode; a cathode electrode; and an organic electroluminescent layer disposed between the anode electrode and the cathode electrode, the organic electroluminescent layer comprising a phosphorescent dopant and a host material comprising the following three different compounds:
(a) an electron-transporting host compound having a triplet energy that is greater than the triplet energy of the phosphorescent dopant;(b) a hole-transporting host compound having a triplet energy that is greater than the triplet energy of the phosphorescent dopant;(c) a wide band gap host compound having a molecular weight of less than 2,000; wherein the wide band gap host compound has a band gap of at least 2.0 eV and a triplet energy that is greater than the triplet energy of the phosphorescent dopant. |
| 地址 |
Ewing NJ US |
