Solution-Processable High Efficiency Yellow Electroluminescent Device Based On Cationic Iridium Complex
A highly luminescent cationic iridium(III) complex with formula Ir(Meppy)2(pybmzht)+(PF6)-was synthesized and characterized (where Meppy is 2-(4-methylphenyl)pyridine; pybmzht is 2,2-dimethyl-6-(2-(pyridin-2-yl)-1H- benzodimidazol-1-yl)hexanenitrile). Ir(Meppy)2 (pybmzht)+ (PF6)- exhibited yellow-emitting with PL peaked at 580 nm in solution. The no-doped electroluminescent device with the configuration of ITO/PEDOT:PSS/complex/TPBI/CsF/Al showed excellent properties with a luminous efficiency of 11 cd/A and an external quantum efficiency of 4.2％. High brightness of 12200 cd/m2 and low turn on voltage of 4.3 V were realized while the host materials are absent. The results indicate that cationic iridium complexes are promising candidates in the high-efficiency no-doped electroluminescent device.
Organic light-emitting devices cationic iridium(III) complex photoluminescence electroluminescence phosphorescence
Bing Chen Yanhu Li Wei Yang Hongbin Wu Yong Cao Jiwen Feng
Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Key Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Key Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Key State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnet
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
499-504
2011-11-07（万方平台首次上网日期，不代表论文的发表时间）