Performance and defects in phosphorescent organic light-emitting diodes

Cyclometallated platinum(ii) complexes containing NHC ligands: synthesis, characterization, photophysics and their application as emitters in OLEDs

“…In the vast majority of publications it was demonstrated that cyclometalated Pt(II) compounds incorporated into the PVK matrix reveal poor to moderate EL characteristics. [36][37][38][39][40] The best results, which are similar to those presented above, were achieved for the series of Pt(II) complexes bearing tridentate 3-[6′-(naphthalene-2″-yl)pyridine-2′-yl]isoquinoline ligands with fluorine substituents reported by Yuen et al 41 We believe that efficiencies of the studied OLEDs can be improved by optimization of the concentration of the luminescent complex and development of more appropriate host-guest system. This study is now in progress.…”

Hybrid white organic light-emitting devices consisting of a non-doped thermally activated delayed fluorescent emitter and an ultrathin phosphorescent emitter

“…Meanwhile, it exhibits significant 3 MLCT and triplet ligand-centered ( 3 LC) admixture [26]. The energy transition happens rapidly from the 1 MLCT state to the 3 MLCT/ 3 LC mixed states through spin-orbit coupling induced by the heavy metal effect [27]. The phosphorescence is subsequently generated by relaxation the excited triplet states to the ground state via intersystem conversion (ISC).…”

Metallo‐organic Conjugated Systems for Organic Electronics

“…Platinum complexes are another class of widely studied complexes for OLEDs. A tridentate 6‐phenyl‐2,2′‐bipyridine‐based Pt(II) alkynyl complex 132 with luminescent polymer blend, was used for an OLED device 91. A polymer matrix helped in the reduction of the overall trap density created by the complex and thus, facilitated the light emission.…”