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dc.contributor.advisor Halas, Naomi J.
dc.creatorSobhanikhakestar, Ali
dc.date.accessioned 2014-10-10T21:32:28Z
dc.date.available 2014-10-10T21:32:28Z
dc.date.created 2014-05
dc.date.issued 2014-04-21
dc.date.submitted May 2014
dc.identifier.urihttp://hdl.handle.net/1911/77521
dc.description.abstract In gratings, incident light can couple strongly to plasmons propagating through periodically spaced slits in a metal film, resulting in a strong, resonant absorption whose frequency is determined by the nanostructure periodicity. When a grating is patterned on a silicon substrate, the absorption response can be combined with plasmon-induced hot electron photocurrent generation. This yields a photodetector with a strongly resonant, narrowband photocurrent response in the infrared, limited at low frequencies by the Schottky barrier, not the bandgap of silicon. Here we report a grating-based hot electron device with significantly larger photocurrent responsivity than previously reported antenna-based geometries. The grating geometry also enables more than three times narrower spectral response than observed for nanoantenna-based devices. This approach opens up the possibility of plasmonic sensors with direct electrical readout, such as an on-chip surface plasmon resonance detector driven at a single wavelength.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectPlasmons
Hot electron
Infrared
Schottky
Narrowband
Extraordinary optical transmission
dc.title Narrowband Photodetection in the Short-wavelength Infrared with a Plasmon-induced Hot Electron Device
dc.contributor.committeeMember Nordlander, Peter J.
dc.contributor.committeeMember Kelly, Kevin F.
dc.date.updated 2014-10-10T21:32:29Z
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Electrical and Computer Engineering
thesis.degree.discipline Engineering
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.identifier.citation Sobhanikhakestar, Ali. "Narrowband Photodetection in the Short-wavelength Infrared with a Plasmon-induced Hot Electron Device." (2014) Master’s Thesis, Rice University. http://hdl.handle.net/1911/77521.


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