Effect of the Hole Injection Layer Conductivity on the Performance of Polymer Light-Emitting Diodes

Electronic structures and photophysical properties of carbazole‐ and thiophene‐based organic compounds used as hole‐injecting layer for organic light‐emitting diodes (OLEDs)

“…It is evident that the relatively lower operating voltage was related to the efficient hole injection into the device based on MO6, and this is attributed to the low energy barrier during the injection of holes from the indium tin oxide (ITO) anode into the MO6, and also the injection of holes into the emitting layer from the MO6 compound. [ 71,72 ]…”

“…It is evident that the relatively lower operating voltage was related to the efficient hole injection into the device based on MO6, and this is attributed to the low energy barrier during the injection of holes from the indium tin oxide (ITO) anode into the MO6, and also the injection of holes into the emitting layer from the MO6 compound. [71,72] For practical application HIL layer composed of the MO6 compound, we believe that this compound with high intramolecular charge transfer upon excitation, as discussed in the last paragraph, and that possess push-pull structure and π-π stacking, can greatly improve the efficiency of HIL.…”