Plasmonic Ag nanostructures on thin substrates for enhanced energy harvesting

R. M. Osgood III; 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

doi:10.1117/12.2024503

18 September 2013 Plasmonic Ag nanostructures on thin substrates for enhanced energy harvesting

R. M. Osgood III, 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

Author Affiliations +

Proceedings Volume 8809, Plasmonics: Metallic Nanostructures and Their Optical Properties XI; 88092T (2013) https://doi.org/10.1117/12.2024503
Event: SPIE NanoScience + Engineering, 2013, San Diego, California, United States

Abstract

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/NbO_x films. We characterize experimentally and theoretically the visible and near-infrared spectra of these “stripeteeth” 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.

Citation Download Citation

R. M. Osgood III, 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, and D. Ginley "Plasmonic Ag nanostructures on thin substrates for enhanced energy harvesting", Proc. SPIE 8809, Plasmonics: Metallic Nanostructures and Their Optical Properties XI, 88092T (18 September 2013); https://doi.org/10.1117/12.2024503

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