Publication date: Available online 20 October 2016
Source:Thin Solid Films
Author(s): Junting Yu, Manjun Xiao, Hua Tan, Weiguo Zhu
Two europium(III) complexes of Tfl-PIPEu(TTA)3 and PIPEu(TTA)3 (Tflf ] Junji and Yoshi (2002), Xu et al. (2008) phenanthroline, TTA3 and PIPEu(TTA)3 were also examined. It was found that the Tfl-PIPEu(TTA)3 -based devices have a better EL performance compared to PIPEu(TTA)3 -based devices because Tfl-PIPEu(TTA)3 exhibits a more matched energy levels with the polyvinylcarbazole:2-(4-biphenyl)-5-(4-tert-butylphenyl)- 1,3,4-oxadiazole (PVK-PBD) and better dispersibility in the PVK-PBD blend. The Tfl-PIPEu(TTA)3 -based devices show a sharp red emission at 6163 -based devices. Our work indicates that the introduction of an alkyltrifluorene unit can improve the device performance for its resulting europium(III) complexes.
Source:Thin Solid Films
Author(s): Junting Yu, Manjun Xiao, Hua Tan, Weiguo Zhu