Phosphorescent organic light-emitting devices: Iridium based emitter materials – An overview

Pyrenyl-Substituted Imidazo[4,5-f][1,10]phenanthroline Rhenium(I) Complexes with Record-High Triplet Excited-State Lifetimes at Room Temperature: Steric Control of Photoinduced Processes in Bichromophoric Systems

“…Precise control of electronic excited states in transition metal complexes, and thus their photophysical and photochemical properties, is crucial for rational design of functional materials with predefined photophysical behavior, appropriate for applications in photocatalysis, − organic light-emitting diodes, − solar energy conversion, − phosphorescence molecular sensing, − and chemotherapy and photodynamic therapy. Some of these photochemical applications involve intermolecular photoinduced energy triplet state transfer, with the efficiency being strongly dependent on the visible absorptivity and triplet excited-state lifetime of the photosensitizer.…”

Improved electroluminescence efficiency derived from functionalized decoration of 1,3,4-oxadiazole (OXD)-based Ir(iii) complexes

“…The improvement in the data could be attributed to the suppressed triplet-triplet annihilation of these complexes dispersed in the host material. 35…”

Boosting the efficiency of deep-red Ir(iii) complexes by modulating nitrogen atoms for high-performance OLEDs

“…[1][2][3] Motivated by this, there is an increasing demand for developing robust emitting materials to achieve high-performance OLEDs. [4][5][6][7] Among all the solid-state emitters employed in devices, phosphorescent transition metal complexes featuring a large spin-orbital coupling (SOC) effect are proposed to replace the fluorescent ones because of their capacity to harvest all electrogenerated exciton. Well-investigated phosphorescent Ir(III) complexes have come to the fore as promising emitters, which possess high luminous efficiency, excellent thermal and electrochemical stabilities, and enabled control of their excited-state properties.…”