Efficiency enhancement in blue organic light emitting diodes with a composite hole transport layer based on poly(ethylenedioxythiophene):poly(styrenesulfonate) doped with TiO2 nanoparticles
Polyfluorene based blue OLEDs with polymer nano-composite HTL have been fabricated. Significant enhancement in blue peak at 430nm of polyfluorene has been observed. The turn on voltage of the device has also been found to improve significantly. The concentration of TiO2 nanoparticles in the HTL has been optimized.
polyfluorene blue oled titanium oxide nanoparticles pedot:pss polymer nanocomposite