| 초록 |
We have designed and synthesized novel Ir(Ⅲ) complexes with 2-(dibenzo[b,d]thiophen-4-yl)pyridine (DTPN) or 2- phenyl(pyrido[3,4-b]benzothiophene) (DTNP) main ligand as a yellow-green emitter. Iridium(Ⅲ) bis(2-(dibenzo[b.d]thiophen-4yl)pyridinato-N,C2)(picolinate) [Ir(DTPN)2pic] and Iridium(Ⅲ) bis(2-phenyl(pyrido[3,4-b]benzothiophenato-N,C2)(picolinate) [Ir(DTNP)2pic] showed an emission wavelength of 541nm and 561nm, respectively. The [Ir(DTNP)2pic] dopant was evaluated as the dopant material for yellow green phosphorescent organic light-emitting diodes and high quantum efficiencies of 22.3% was obtained. |
