Plasmonic Ag Nanostructures on Thin Substrates for Enhanced Energy Harvesting

R. M. Osgood, S. A. Giardini, J. B. Carlson, C. Gear, K. Diest, M. Rothschild, G. E. Fernandes, J. Xu, S. Kooi, P. Periasamy, R. O'Hayre, P. Parilla, J. Berry, D. Ginley

Research output: Contribution to conferencePaperpeer-review

1 Scopus Citations


Nanoparticles and nanostructures with plasmonic resonances are currently being employed to enhance the efficiency of solar cells. Ag stripe arrays have been shown theoretically to enhance the short-circuit current of thin silicon layers. Such Ag stripes are combined with 200 nm long and 60 nm wide teeth which act as nanoantennas, and form vertical rectifying metal-insulator-metal (MIM) nanostructures on metallic substrates coated with thin oxides, such as Nb/NbOx films. We characterize experimentally and theoretically the visible and near-infrared spectra of these "stripe teeth" arrays, which act as microantenna arrays for energy harvesting and detection, on silicon substrates. Modeling the stripe-teeth arrays predicts a substantial net a.c. voltage across the MIM diode, even when the stripe-teeth microrectenna arrays are illuminated at normal incidence.

Original languageAmerican English
Number of pages10
StatePublished - 2013
EventPlasmonics: Metallic Nanostructures and Their Optical Properties XI - San Diego, CA, United States
Duration: 25 Aug 201329 Aug 2013


ConferencePlasmonics: Metallic Nanostructures and Their Optical Properties XI
Country/TerritoryUnited States
CitySan Diego, CA

NREL Publication Number

  • NREL/CP-5K00-62253


  • efficiency enhancement
  • energy/power conversion
  • metalinsulator-metal diode
  • nanoantennas
  • nanoparticles
  • NIR/visible spectrum
  • optical properties
  • Plasmonic resonances
  • quantum efficiency
  • rectification
  • tunneling diodes


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