Phenanthroimidazole as molecularly engineered switch for efficient and highly long-lived light-emitting electrochemical cell.

ABSTRACT: Light-emitting electrochemical cells (LECs) based on Ir(III) complexes owing to the superior advantages exhibit high potential for display and lighting applications. Herein, a series of Ir(III) complexes based on phenanthroimidazole (PI) as an ancillary ligand were synthesized to achieve efficient and highly stable yellow-to-orange LEC devices with fast response. These complexes exhibit appropriate electrochemical stability and significant suppression of concentration quenching in the thin films compared to the archetype complex. The fabricated LECs showed remarkably long device lifetimes over 1400 and 2100 h and external quantum efficiency of 2 and 3% for yellow and orange-LECs, respectively. The obtained t_1/2 for yellow LEC is much higher than archetype [Ir(ppy)₂(ph

SUBMITTER: Nemati Bideh B 

PROVIDER: S-EPMC9911647 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature