Schottky-contact plasmonic rectenna for biosensing

Mohammad Alavirad; Saba Siadat Mousavi; Langis Roy; Pierre Berini

doi:10.1117/12.2036203

11 October 2013 Schottky-contact plasmonic rectenna for biosensing

Mohammad Alavirad, Saba Siadat Mousavi, Langis Roy, Pierre Berini

Proceedings Volume 8915, Photonics North 2013; 89151D (2013) https://doi.org/10.1117/12.2036203
Event: Photonics North 2013, 2013, Ottawa, Canada

Abstract

We propose a plasmonic gold nanodipole array on silicon, forming a Schottky contact thereon, and covered by water. The behavior of this array under normal excitation has been extensively investigated. Trends have been found and confirmed by identification of the mode propagating in nanodipoles and its properties. This device can be used to detect infrared radiation below the bandgap energy of the substrate via internal photoelectric effect (IPE). Also we estimate its responsivity and detection limit. Finally, we assess the potential of the structure for bulk and surface (bio) chemical sensing. Based on modal results an analytical model has been proposed to estimate the sensitivity of the device. Results show a good agreement between numerical and analytical interpretations.

Citation Download Citation

Mohammad Alavirad, Saba Siadat Mousavi, Langis Roy, and Pierre Berini "Schottky-contact plasmonic rectenna for biosensing", Proc. SPIE 8915, Photonics North 2013, 89151D (11 October 2013); https://doi.org/10.1117/12.2036203

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