supported by the National Natural Science Foundation of China(10904042 and 61078046);the Key Progam of Chinese Ministry of Education(210157);China Postdoctoral Science Foundation(2012M511584);the Natural Science Foundation of Guangdong Province(8251063101000007 and 10151063101000009);the Scientific and Technological Plan of Guangdong Province(2008B010200004 and 2010B010600030);the Scientific and Technological Plan of Guangzhou City(10U1-D00131)
Highly-efficient blue phosphorescent light-emitting diodes were fabricated based on a conjugated-polymer host by doping bis(2-(4,6-difluorophenyl)-pyridinato-N,C2') picolinate(FIrpic) into poly(9,9-dioctylfluorene)(PF...