High-Efficiency, Saturated Red-Phosphorescent Polymer Light-Emitting Diodes Based on Conjugated and Non-Conjugated Polymers Doped with an Ir Complex


  • This work is sponsored by Ministry of Science and Technology (MOST) of China (#2002CB613400) and National Natural Science foundation of China (NSFC# 50028302)


High-efficiency red-emitting polymer light-emitting diodes utilizing [PhqIr]-doped non-conjugated and conjugated polymers (see Figure) in the presence of electron transport molecules are reported. An external quantum efficiency of 12 % photon/electron and a luminous efficiency of 5.2 cd/A with saturated red emission at 624 nm are demonstrated.