High efficiency yellowish green phosphorescent emitter derived from phenylbenzothienopyridine ligand
摘要:
A yellowish green phosphorescent dopant derived from phenylbenzothienopyridine ligand, iridium (III) [bis(1-phenylbenzo[4,5]thieno[2,3-c]pyridinato-N,C-2]picolinate. (Ir(DTNP)(2)pic) was synthesized and the device performances of the Ir(DTNP)(2)pic was studied. The Ir(DTNP)(2)pic dopant exhibited yellowish green emission at 548 nm and showed a high quantum efficiency of 22.4% at 1000 cd/m(2) with a color coordinate of (0.43, 0.57) in yellowish green phosphorescent organic light-emitting diodes. (C) 2014 Elsevier B.V. All rights reserved.