Efficient red phosphorescent OLEDs employing carbazole-based materials as the emitting host

Bis-Tridentate Iridium(III) Phosphors Bearing Functional 2-Phenyl-6-(imidazol-2-ylidene)pyridine and 2-(Pyrazol-3-yl)-6-phenylpyridine Chelates for Efficient OLEDs

“…Because of the mismatched refractive indices of the ITO and organic layers, the thicknesses of ITO and HTL would also affect the out-coupling efficiency . On the basis of our previous experience, the thicknesses of ITO for green and red phosphorescent OLEDs were set at 70 and 90 nm, respectively.…”

Mo-doped GZO films used as anodes or cathodes for highly efficient flexible blue, green and red phosphorescent organic light-emitting diodes

“…Iridium(III) FIrpic, Ir(ppy) 3 , and Ir(piq) 3 were, respectively, selected as the blue, green, and red phosphorescent emitters because of their high quantum yields. [27][28][29] To fulfill the requirement of host-guest energy transfer, host and carrier transport materials with wide triplet energy gap hosts and wide gaps should be adopted in the architecture design. According to our previous studies, bipolar 3-bis(9-carbazolyl)benzene (mCP) possessing a wide-triplet energy gap of 2.9 eV could effectively provide endothermic energy transfer from the host to the blue, green, and red guests.…”

Efficient saturated red light-emitting polyfluorenes containing iridium complexes in side chains

“…Nevertheless, these observations indicated that the strategy of preparing electrophosphorescent polymers through grafting of the iridium complexes onto the copolymer through a long alky side chain, not only can decrease concentration quenching by complexes stacking, but also increase the distance between the polymer host and Ir complexes, effectively suppressing the triplet state energy back transfer from the Ir complex guest to the polymer host. 32…”