Surface plasmon resonance in ZnO nanorod arrays caused by gold nanoparticles for solar cell application. Issue 12 (31st August 2015)

• Record Type: Journal Article
• Authors: Gromyko, Inga; Acik, Ilona Oja; Krunks, Malle; Dedova, Tatjana; Katerski, Atanas; Mere, Arvo; Mikli, Valdek; Vessart, Risto
• Is Part Of: Physica status solidi. Volume 12:Issue 12(2015:Dec.)
• Page Start: 1338
• Page End: 1343
• Publication Date: 2015-08-31
• Subjects: ZnO nanorods -- Au‐nanoparticles -- chemical spray pyrolysis -- surface plasmon resonance effect; Solid state physics -- Congresses; Solid state physics -- Periodicals; Solid state physics; Conference proceedings; Periodicals; 530.41
• DOI: 10.1002/pssc.201510103
• Languages: English
• ISSNs: 1862-6351

Abstract

Abstract: In this paper, we study the growth of gold nanoparticles (Au‐NPs) onto ZnO nanorod arrays (ZnO‐NRAs) and the surface plasmon resonance effect caused by them. ZnO‐NRAs were deposited by the chemical spray pyrolysis method. Au‐NPs were obtained by spin‐coating of HAuCl4 in ethanol solution over the nanorod samples. According to XRD, the average size of Au‐NPs on ZnO‐NRAs increases from 27 nm to 72 nm by increasing the HAuCl4 concentration in solution from 0.01 to 0.1 mol/L. There are no visible changes in ZnO‐NRAs morphology using the solutions with 0.0004‐0.03 mol/L, partial dissolution of nanorods occurs when using HAuCl4 solution with the concentration of 0.05 mol/L or higher. ZnO‐NRAs covered with Au‐NPs show the red shift of the surface plasmon resonance band from 545 to 555 nm with increasing the HAuCl4 solution concentration from 0.002 to 0.05 mol/L. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)