| 发明名称 | Organic light-emitting device | ||
| 摘要 | An organic light-emitting device comprising an anode; a cathode; a first light-emitting layer between the anode and the cathode; and a second light-emitting layer between the first light-emitting layer and the cathode, wherein: the first light-emitting layer comprises a hole-transporting material and a first phosphorescent material,the second light-emitting layer comprises a second phosphorescent material; andthe lowest triplet excited state energy level of the hole-transporting material is: (a) lower than the lowest triplet excited state of the second phosphorescent material, and (b) the same as or higher than the lowest triplet excited state energy level of the first phosphorescent material. | ||
| 申请公布号 | US9099666(B2) | 申请公布日期 | 2015.08.04 |
| 申请号 | US201414296682 | 申请日期 | 2014.06.05 |
| 申请人 | Cambridge Display Technology, Ltd.;Sumitomo Chemical Company Limited | 发明人 | King Simon;Mohamad David |
| 分类号 | B05D5/12;H01L51/50;H01L27/32;H01L51/00;H01L51/56 | 主分类号 | B05D5/12 |
| 代理机构 | Wolf, Greenfield & Sacks, P.C. | 代理人 | Wolf, Greenfield & Sacks, P.C. |
| 主权项 | 1. An organic light-emitting device comprising an anode; a cathode; a first light-emitting layer between the anode and the cathode; and a second light-emitting layer between the first light-emitting layer and the cathode, wherein: the first light-emitting layer comprises a hole-transporting material and a first phosphorescent material, the second light-emitting layer comprises a second phosphorescent material; and the lowest triplet excited state energy level of the hole-transporting material is: (a) lower than the lowest triplet excited state of the second phosphorescent material, and (b) the same as or higher than the lowest triplet excited state energy level of the first phosphorescent material, wherein, the second light-emitting layer comprises a third phosphorescent material. | ||
| 地址 | Godmanchester GB | ||