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Article Dans Une Revue Nano Letters Année : 2015

Midinfrared Plasmon-Enhanced Spectroscopy with Germanium Antennas on Silicon Substrates

Résumé

Midinfrared plasmonic sensing allows the direct targeting of unique vibrational fingerprints of molecules. While gold has been used almost exclusively so far, recent research has focused on semiconductors with the potential to revolutionize plasmonic devices. We fabricate antennas out of heavily doped Ge films epitaxially grown on Si wafers and demonstrate up to 2 orders of magnitude signal enhancement for the molecules located in the antenna hot spots compared to those located on a bare silicon substrate. Our results set a new path toward integration of plasmonic sensors with the ubiquitous CMOS platform.

Dates et versions

hal-01696088 , version 1 (30-01-2018)

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Citer

Leonetta Baldassarre, Emilie Sakat, Jacopo Frigerio, Antonio Samarelli, Kevin Gallacher, et al.. Midinfrared Plasmon-Enhanced Spectroscopy with Germanium Antennas on Silicon Substrates. Nano Letters, 2015, 15 (11), pp.7225 - 7231. ⟨10.1021/acs.nanolett.5b03247⟩. ⟨hal-01696088⟩
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