Solid-state thermal dewetted silver nanoparticles onto electrochemically grown self-standing vertically aligned ZnO nanorods for three-dimensional plasmonic nanostructures

Juan Agustín Badán, Guillermo Jauregui, Elena Navarrete-Astorga, Rodrigo Henríquez, Francisco Martín Jiménez, Daniel Ariosa, Enrique A. Dalchiele

Research output: Contribution to journalArticlepeer-review

Abstract

Three dimensional (3D) plasmonic nanostructures composed of silver nanoparticles decorated ZnO NRs arrays, have been fabricated by a process combining the electrochemical growth of ZnO NRs and further formation of Ag nanoparticles by the solid-state thermal dewetting (SSD) process. The effect of SSD parameters on the morphological, structural and optical properties of the Ag NPs decorated ZnO NRs arrays has been investigated. It is possible to tune the bandgap of the Ag NPs@ZnO nanorods array 3D plasmonic nanostructure by tailoring the Ag nanoparticle sizes, allowing light manipulation at the nanoscale. The silver nanoparticles attached to the ZnO NRs arrays experienced surface plasmonic coupling effect, causing enhancement in the room temperature photoluminescence (PL) UV emission and quenching the corresponding visible light one. An enhancement in the near band edge emission PL intensity of ZnO to the deep level emission PL intensity ratio after Ag NPs decoration of the ZnO nanostructures corresponding to ca. 11 folds has been observed, indicating that the defect emission is obviously suppressed.

Original languageEnglish
JournalCeramics International
DOIs
StateAccepted/In press - 2021
Externally publishedYes

Keywords

  • Nanoparticles
  • Optical properties
  • Plasmonic nanostructures
  • Silver
  • ZnO nanorods

Fingerprint

Dive into the research topics of 'Solid-state thermal dewetted silver nanoparticles onto electrochemically grown self-standing vertically aligned ZnO nanorods for three-dimensional plasmonic nanostructures'. Together they form a unique fingerprint.

Cite this