Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 5, Issue 38, Pages 10029-10038Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7tc02557b
Keywords
-
Funding
- Pioneer Research Center Program through National Research Foundation of Korea - Ministry of Science, ICT & Future Planning (MSIP) of Korea [NRF-2013M3C1A3065522]
Ask authors/readers for more resources
A heteroleptic deep-red iridium(III) complex, TPQIr-HT, based on thiophene-phenylquinoline (TPQ), and orange Ir(III) complexes, m-CF(3)DPQIr-HT and m-CF(3)DPQIr-ET based on diphenylquinoline (DPQ), are designed by attaching a carbazole-based hole transporting (HT) group and an oxadiazole (OXD)-based electron transporting (ET) group to the parent Ir(III) complexes, TPQIr and m-CF(3)DPQIr. The Ir(III) complexes TPQIr-HT show a deep-red emission peak at 612 nm, similar to that of TPQIr, whereas m-CF(3)DPQIr-HT and m-CF(3)DPQIr-ET show an orange emission peak at 567 +/- 1 nm, which is similar to that of m-CF(3)DPQIr. The newly functionalized Ir(III) complexes show improved device performance compared to the Ir(III) complexes, TPQIr and m-CF(3)DPQIr, without the additional functional groups. The phosphorescent organic light-emitting diodes (PhOLEDs) fabricated using a deep-red Ir(III) complex, TPQIr-ET, achieved a maximum external quantum efficiency (EQE) of 17.47% using GraHIL as the hole injection layer (HIL). Similarly, the orange Ir(III) complex, m-CF(3)DPQIr-HT, achieved a maximum EQE of 21.61%.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available