发明名称 |
Organic electroluminescent device |
摘要 |
An organic electroluminescent device includes an emission layer interposed between a first electrode and a second electrode. The emission layer may be composed of a host material and a phosphorescent dopant material. The host material may be composed of a mixture of a hole transport material and an electron transport material. The hole transport material may be a carbazole compound and the electron transport material may include at least a compound selected from spirofluorenes and organic metal complexes. The use of the mixture facilitates the re-combination of holes and electrons in neighboring organic layers, thus decreasing the driving voltage and increasing the luminous efficiency and lifetime of the organic electroluminescent device.
|
申请公布号 |
US7601439(B2) |
申请公布日期 |
2009.10.13 |
申请号 |
US20050284968 |
申请日期 |
2005.11.23 |
申请人 |
SAMSUNG MOBILE DISPLAY CO., LTD. |
发明人 |
CHUN MIN-SEUNG;LEE JUN-YEOB;CHOI YONG-JOONG |
分类号 |
H01L51/54 |
主分类号 |
H01L51/54 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|