A new family of solution-processible tris-(pinene-phenylpyridine) iridium(III) derivatives for polymer light-emitting diodes

作者：He, Jian^*; Liu, Hongmei; Xu, Shandong; Wang, Pengfei; Zhang, Xiaohong

来源：Synthetic Metals, 2009, 159(7-8): 689-694.

DOI：10.1016/j.synthmet.2008.12.022

• PLEDs
• Iridium complex
• Phosphorescent emitter
• Solution-processible

A new family of iridium(III) complexes featuring pinene groups and various alkoxy side chains were synthesized and characterized. The complexes show emission peaked at around 492 nm with the phosphorescence quantum yield of Phi(P) = 0.4-0.6 and the emission lifetime of tau = 2-4 mu s. Polymer light emitting devices (PLEDs) with the configuration of ITO/PEDOT:PSS (50 nm)/PVK(0.7):PBD(0.3):(xwt.%)lr(III) complex(80 nm)/CsF(1.5 nm)/Mg:Ag(200 nm) were fabricated by spin-coating. The device with new iridium(III) complex doping concentration of 3.2 wt.% exhibits a maximum luminance efficiency 19.9 cd/A (7.8 lm/W) at 9.1 V, CIE coordinates (0.21, 0.53), and a maximum luminance of 15,700 cd/m(2) at 8.4 V was observed.

• 出版日期2009-4
• 单位中国科学院理化技术研究所