Abstract
This study investigates the enhancement of organic light-emitting diode (OLED) performance through the integration of titanium dioxide (TiO(2)) nanocomposites within a poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT/PSS) matrix. The nanocomposite films were prepared using a controlled dispersion of TiO(2) belts into the PEDOT/PSS solution, followed by their incorporation into the OLED hole-injection layer (HIL). Our results demonstrate a significant improvement in device efficiency, attributed to the optimized charge carrier mobility and reduced recombination losses, which were achieved by the presence of TiO(2). The nanocomposite hybrid layer enhances light emission efficiency due to its role in modifying surface roughness, promoting better film uniformity, and improving hole injection. The incorporation of TiO(2) nanobelts into PEDOT/PSS led to significant efficiency enhancements, yielding a 39% increase in PE(max), a 37% improvement in CE(max), and a remarkable 72% rise in EQE(max) compared to the undoped counterpart. This research provides insight into the potential of TiO(2) nanocomposites in advancing OLED technology for next-generation display and lighting applications.