摘要
A novel rare earth complex Eu0 5La0.5 （TRA）3phen, displaying electroluminescent property, was synthesized, and monolayer and double-layer devices were fabricated by doping it into poly N-vinylcarbazole. The characteristics of these optimized devices were investigated, and the emitting mechanism was explained through the energy band diagram. Optimized double-layer devices with a turn-on voltage of 6.5 V were achieved. At the current density of 68.48 mA·cm^- 2, the maximum brightness and the current efficiency of the device reached 238.4 cd·m^-2 and 0.35 cd·A^-1, respectively.
A novel rare earth complex Eu0 5La0.5 （TRA）3phen, displaying electroluminescent property, was synthesized, and monolayer and double-layer devices were fabricated by doping it into poly N-vinylcarbazole. The characteristics of these optimized devices were investigated, and the emitting mechanism was explained through the energy band diagram. Optimized double-layer devices with a turn-on voltage of 6.5 V were achieved. At the current density of 68.48 mA·cm^- 2, the maximum brightness and the current efficiency of the device reached 238.4 cd·m^-2 and 0.35 cd·A^-1, respectively.
基金
Project supported bythe National Natural Science Foundation of China (90201004)
Beijing Science &Technology Foundation(H030430020410)
the Natural Science Foundation of Hebei (203148)
