Enhanced Performance of Polymer Light Emitting Devices Using Zinc Oxide Nanoparticle with Poly(vinylcarbazole)

Abstract

The addition of zinc oxide (ZnO) nanoparticles into electroluminescent poly(vinylcarbazole) (PVK) polymer layers results in increased current densities, brightness, and luminance efficiencies in polymer light emitting devices. For low turn-on voltages, an increase in current density and good stability are achieved. At 9 V, we achieved a brightness of 743cd/normalm2 with a luminance efficiency of 0.35 cd/A for PVK–ZnO nanocomposite devices. Electroluminescence (EL) spectra reveal that the EL yield of PVK–ZnO nanoparticle devices increased greatly as compared with pure PVK devices. The current–voltage characteristics indicate that the addition of ZnO nanoparticles can facilitate better electrical injection and charge transport.

Spectral Behavior of a Conjugated Polymer MDMO-PPV Doped with ZnO Nanoparticles: Thin Films

“…The utilization of nanoparticles in developing CPs has garnered significant attention in research due to its promising optical and electrical capabilities, which lead to stable and high-performance devices. [31][32][33]. The addition of ZnO NPs into PMMA polymer results in a decreased optical band gap.…”

“…The addition of ZnO NPs into PMMA polymer results in a decreased optical band gap. This decrease in the band gap is owing to the increase of the disorder in the nanocomposite generated by the presence of the localized states where many transitions into the band gap are allowed by the increase of the localized state in the nanocomposite [33]. Composites of ZnO NPs and CPs are fascinating for use in OLEDs [34][35][36][37].…”

Geometry of the inkjet‐printed sensing layer for a better volatile organic compound sensor response

“…Nanosized inorganic fillers dispersed in insulating polymeric matrices belong to the broader category of polymer nanocomposites (PNCs). The conductivity and mechanical stability properties of nanoparticles combined with the simple processability of polymers, low cost of production and of materials, possibility of easy and cheap manufacture of the large area devices, possibility of varying the composition, and hence, properties of the organic materials make the resultant hybrid system attractive in a wide range of polymer‐based devices, such as light‐emitting diodes,1–3 photodiodes,4 solar cells,5 magnetic storage materials,6 and gas sensors 7…”