Augmented properties for PPY-PANI-ZnO nanocomposite as electron transport layer material for organic light emitting diode (OLED) application

摘要

The PPY, PANI and PPY-PANI-ZnO nanocomposite were prepared via chemical oxidative polymerization method using ammonium persulfate as oxidant in the laboratory. The successful embodiment of ZnO in the surface of PPY-PANI was confirmed by Fourier transform inferred spectroscopy (FTIR) analysis. The nano-flakes of ZnO were completely covered by PPY-PANI fibrous spherical ball like structure as studied by the surface morphological images. An enhanced current density ～164.81 % and high non-radiative recombination of electron-hole was observed with significantly enhanced conductivity for 15 % PPY-PANI-ZnO nanocomposite. The high dielectric constant (～895) at 333 K with high electrochemical reduction potential (～+0.650 V) and high electron-hole recombination rate specified that it can used as electron transporting layer material for OLED devices.