Color stable and low driving voltage white organic light-emitting diodes with low efficiency roll-off achieved by selective hole transport buffer layers

Distinguishing triplet energy transfer and trap-assisted recombination in multi-color organic light-emitting diode with an ultrathin phosphorescent emissive layer

“…To our delight, Zhang et al demonstrated color-stable phosphorescent WOLEDs with yellow/ blue/yellow architecture in which FIrpic based EML is sandwiched between two bis(2-phenylbenzothiazolato) (acetylacetonate)iridium(III) (Ir(bt) 2 (acac)) based EMLs. 16 This is consistent with the above-mentioned conclusion.…”

Observation of hole injection boost via two parallel paths in Pentacene thin-film transistors by employing Pentacene: 4, 4″-tris(3-methylphenylphenylamino) triphenylamine: MoO3 buffer layer

“…7 shows the J-V curves of hole-only devices for characterizing the hole injection capacity directly into ITO which is a standard electrode in the traditional OLEDs architecture. Compared with the current density of the m-MTDATA: MoO 3 (6.6 × 10 3 µA) that is commonly used for demonstrating efficient OLEDs (especially for lower turn-on voltage), 18,23 the current density of Pentacene: m-MTDATA: MoO 3 device reaches up to 9.1 × 10 3 µA at 10 V. Therefore, it is believed that the Pentacene: m-MTDATA: MoO 3 strategy developed in this work may have great potential application to enhance the hole injection for OLEDs as well as other organic electronics devices in the future. More details about this work will be presented later, and the performance is expected to be largely improved after optimization.…”