Plasmon enhanced fluorescence from meticulously positioned gold nanoparticles, deposited by ultra sonic spray coating on organic light emitting diodes. Issue 6 (1st March 2023)

• Record Type: Journal Article
• Authors: Nithyananda Kumar, Rachith Shanivarasanthe; Eerdekens, Maarten; de Coene, Yovan; Nagaraja, Veda Sandeep; Ahadzadeh, Shabnam; Van landeghem, Melissa; Verbiest, Thierry; Deferme, Wim
• Is Part Of: Nanoscale advances. Volume 5:Issue 6(2023)
• Page Start: 1750
• Page End: 1759
• Publication Date: 2023-03-01
• Subjects: 620.5
• DOI: 10.1039/d2na00753c
• Languages: English
• ISSNs: 2516-0230

Abstract

Abstract : The spatial and surface coverage reliance of plasmonic Au nanoparticles is controlled by a roll-to-roll compatible ultrasonic spray coating technique, providing enhanced electroluminescence, luminous efficacy and external quantum efficiency. Abstract : Enhancement of the spontaneous emission of fluorophores aided by plasmonic nanoparticles (PNPs) prompts the growth of plasmonic organic light emitting diodes (OLEDs). Together with the spatial dependence of the fluorophore and PNPs on enhanced fluorescence, the surface coverage of the PNPs controls the charge transport in OLEDs. Hence, here, the spatial and surface coverage reliance of plasmonic gold nanoparticles is controlled by a roll-to-roll compatible ultrasonic spray coating technique. A 2-fold enhancement in the multi photon fluorescence is seen by two-photon fluorescence microscopy for a polystyrene sulfonate (PSS) stabilized gold nanoparticle located 10 nm away from the super yellow fluorophore. Fluorescence enhancement combined with ∼2% surface coverage of PNPs, provides a 33%, 20% and ∼40% increase in the electroluminescence, luminous efficacy and external quantum efficiency, respectively.