Highly tunable surface plasmons using metal/metal oxide hybrid nanostructures

Akram A. Khosroabadi, Robert A Norwood

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Metal and metal oxide electrodes have gained lots of interest in many optoelectronic devices including photovoltaics, light emitting diodes, sensors, batteries and biophotonics. In light harvesting devices, one dimensional electrodes increase surface area which in turn enhannces the light absorption, charge transfer and charge collection effieincies. A novel nanoimprint lithography method is used to fabricate nanostructured electrodes (NSEs). Silicon mold is used to imprint nanostructures with different dimensions and geomerties. The polymer film is then cured at ∼ 150 °C to fabricate nanostructures. Large area nanostructured hybrid silver and transparent conductive oxides (TCOs) including ITO and IZO arrays with feature sizes below 100 nm have been fabricated. The optical and electrical properties of these core shell electrodes including the surface plasmon frequency can be tuned by suitably changing the dielectrics and their dimensions. The surface plasmon wavelength of the nanopillar Ag changes from 650nm to 690nm depending on the dimensions of the pillars. Adding layers of ITO to the structure shifts the resonance wavelength toward the infrared region by an amount depending on the sequence and thickness of the layers in the structure.

Original languageEnglish (US)
Title of host publicationNSTI
Subtitle of host publicationAdvanced Manufacturing, Electronics and Microsystems - TechConnect Briefs 2015
EditorsBart Romanowicz, Matthew Laudon
PublisherTaylor and Francis Inc.
Pages147-149
Number of pages3
Volume4
ISBN (Electronic)9781498747301
StatePublished - Jan 1 2015
Event10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 18th Annual Nanotech Conference and Expo, and the 2015 National SBIR/STTR Conference - Washington, United States
Duration: Jun 14 2015Jun 17 2015

Other

Other10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 18th Annual Nanotech Conference and Expo, and the 2015 National SBIR/STTR Conference
CountryUnited States
CityWashington
Period6/14/156/17/15

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Keywords

  • Core shell
  • Nanostruture
  • Plasmonic
  • Transparent conductive oxide

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Fluid Flow and Transfer Processes
  • Biotechnology
  • Fuel Technology

Cite this

Khosroabadi, A. A., & Norwood, R. A. (2015). Highly tunable surface plasmons using metal/metal oxide hybrid nanostructures. In B. Romanowicz, & M. Laudon (Eds.), NSTI: Advanced Manufacturing, Electronics and Microsystems - TechConnect Briefs 2015 (Vol. 4, pp. 147-149). Taylor and Francis Inc..