Integrated architecture for the electrical detection of plasmonic resonances based on high electron mobility photo-transistors

Davide Sammito; Davide De Salvador; Pierfrancesco Zilio; Giorgio Biasiol; Tommaso Ongarello; Michele Massari; Gianluca Ruffato; Margherita Morpurgo; Davide Silvestri; Gianluigi Maggioni; Gianluca Bovo; Michele Gaio; Filippo Romanato

doi:10.1039/C3NR04666D

Integrated architecture for the electrical detection of plasmonic resonances based on high electron mobility photo-transistors†

Davide Sammito,‡*^ab Davide De Salvador,‡*^c Pierfrancesco Zilio,^ac Giorgio Biasiol,^b Tommaso Ongarello,^ac Michele Massari,^a Gianluca Ruffato,^ac Margherita Morpurgo,^d Davide Silvestri,^d Gianluigi Maggioni,^ce Gianluca Bovo,^c Michele Gaio^c and Filippo Romanato^abc

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* Corresponding authors

^a Laboratory for Nanofabrication of Nanodevices, LaNN – Veneto Nanotech, Corso Stati Uniti 4, 35127 Padova, Italy
E-mail: davide.sammito@venetonanotech.it

^b Istituto Officina dei Materiali, IOM – CNR, SS. 14 km 163.5 in Area Science Park, 34149 Basovizza, Trieste, Italy

^c University of Padova, Department of Physics and Astronomy, Via Marzolo 8, 35131 Padova, Italy
E-mail: davide.desalvador@unipd.it

^d University of Padova, Department of Pharmaceutical and Pharmacological Sciences, Via Marzolo 5, 35131 Padova, Italy

^e INFN Legnaro National Laboratories, Viale dell'Università 2, 35020 Legnaro, Pd, Italy

Abstract

We report the design of an integrated platform for on-chip electrical transduction of the surface plasmon resonance supported by a nanostructured metal grating. The latter is fabricated on the active area of a GaAs/AlGaAs photo-HEMT and simultaneously works as the electronic gate of the device. The gold plasmonic crystal has a V-groove profile and has been designed by numerical optical simulations. By showing that the numerical models accurately reproduce the phototransistors experimental response, we demonstrate that the proposed architecture is suitable for the development of a new class of compact and scalable SPR sensors.

Nanoscale

Integrated architecture for the electrical detection of plasmonic resonances based on high electron mobility photo-transistors†

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Integrated architecture for the electrical detection of plasmonic resonances based on high electron mobility photo-transistors

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