Multiple plasmonic effect on photocurrent generation of metal‐loaded titanium dioxide composite/dye films on gold grating surface

Abstract

a We demonstrate the multiple plasmonic effect on the photocurrent properties of photoanodes containing Ag or Au nanoparticles (NPs) loaded onto titanium dioxide film (Ag-TiO 2 or Au-TiO 2 ) on Au grating surfaces. Ag-TiO 2 or Au-TiO 2 nanocomposite particles are prepared by a flame spray pyrolysis route. The structures and morphologies of the prepared products are characterized by high-resolution transmission electron microscopy. The Ag-TiO 2 or Au-TiO 2 composite NPs are deposited by spin coating onto the Au grating surfaces. The photoanode electrode is a layered structure of blu-ray disc-recordable grating substrate/Au/Ag (or Au)-TiO 2 /dye/electrolyte/indium-tin oxide. The plasmonic effect is induced when Ag or Au NPs are located within the propagating surface plasmon (SP) field on the Au grating surface. The short-circuit photocurrent is increased by exciting the grating-coupled propagating SP on the Au gratings and is further enhanced by positioning the Ag or Au NPs within the grating-coupled SP field.

Enhanced Photocatalytic Degradation of Methylene Blue by Using Au-TiO₂

“…However, the photocatalytic degradation of MB decreased with the Au NPs more than 0.25 % mol. The photocatalytic activity decreased because Au NPs might be obscured on the particle on TiO 2 surface leading to reduce absorption of photon energies [25].…”

Surface plasmon resonance synergistic coupling effects of gold nanoparticulates with silver grating in P3HT: PC61BM-based organic solar cell

“…This can be achieved with the incorporation of quantum dots coupled with metallic nanostructures or by employing nanograting backcontact structures in the organic solar cell to utilize surface plasmon for optimum performance. [7][8][9][10][11][12][13][14][15][16][17][18][19] Surface plasmon (SP) is a resonance phenomenon that describes a collective oscillation of delocalized electrons in a metal surface or at the metal-dielectric interface. [20][21][22][23] The resonance is typically established when the incident light frequency matches the oscillating frequency of the metallic nanostructures, giving rise to what is called plasmonic excitation.…”

Plasmonic photothermal properties of silver nanoparticle grating films

“…Simultaneous localized surface plasmon and propagating surface plasmon systems have been reported in various applications such as photovoltaic devices, 22,23 water splitting systems, 24,25 photoelectrochemical sensors, 26 broadband absorption enhancement, 27,28 and other applications. 29–31 Because a highly enhanced electric field can be obtained by the synergistic effect of both plasmon excitations, these devices showed significant improvement in their performance.…”