A highly efficient red electrophosphorescent iridium(III) complex containing phenyl quinazoline ligand in polymer light-emitting diodes

作者：Mei Qunbo^*; Wang Lingxia; Guo Yuanhui; Weng Jiena; Yan Fang; Tian Bo; Tong Bihai

来源：Journal of Materials Chemistry, 2012, 22(14): 6878-6884.

DOI：10.1039/c2jm15160j

A novel iridium(III) complex (PQxD)(2)Ir(pic) (HPQxD, N,N,2-triphenylquinazolin-4-amine; pic, 2-picolinic acid) was synthesized and used as a triplet emitter doped in a polymeric host in solution-processed electrophosphorescent light-emitting diodes. Polymer light-emitting devices (PLEDs) with the structure of ITO/PEDOT: PSS/(70% PVK + 30% PBD):x% (PQxD)(2)Ir(pic)/TPBI/CsF/Al were fabricated with high external quantum efficiency. The device based on (PQxD)(2)Ir(pic) furnishes a maximum external quantum efficiency of 18.44% and a luminance of 7107 cd m(-2) at 8% doping concentration. The Commission International de L'Eclairage (CIE) coordinates of the complex were (0.619,0.376).

• 出版日期2012
• 单位南京邮电大学; 安徽工业大学