Highly efficient electron injection and transport materials
The charge balance in OLEDs is essential for achieving high device performance. As holes are the majority carrier in common OLEDs, highly efficient electron injection materials (EIMs) and electron transporting materials (ETMs) are highly desired. In our work, it is discovered that some of the alkali compounds, such as alkali carbonates and nitrides, would decompose to form alkali metal during vacuum thermal evaporation. These materials can be used as EIM to improve OLED performances. We have also found bipolar transporting materials are ideal for ETM in OLEDs. For an example, a pyridine-containing anthracene derivative developed in our lab show high electron and hole mobilities of around 10-3 cm2 V-l s-1. Furthermore, cyclic voltammetry measurements find that both the cations and anions of the new material are stable, which may improve the stability of OLEDs.
OLED electron injection material electron transporting material efficiency stablity
Lian Duan
a Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education,Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China b Visionox Tech. Ltd, Beijing, 100085, P. R. China
国际会议
China Display/Asia Display 2011(2011年中国显示/亚洲显示会议)
江苏昆山
英文
204-207
2011-11-07（万方平台首次上网日期，不代表论文的发表时间）