English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/181674
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Phonon-mediated mid-infrared photoresponse of graphene

AuthorsBadioli, M.; Woessner, A.; Tielrooij, K. J.; Nanot, S.; Navickaite, G.; Stauber, Tobias ; García de Abajo, Francisco Javier ; Koppens, F. H. L.
KeywordsSurface phonon
Mid-infrared photodetection
Hot carriers
Graphene-phonon interaction
Graphene photodetection
Issue Date12-Nov-2014
PublisherAmerican Chemical Society
CitationNano Letters 14(11): 6374-6381 (2014)
AbstractThe photoresponse of graphene at mid-infrared frequencies is of high technological interest and is governed by fundamentally different underlying physics than the photoresponse at visible frequencies, as the energy of the photons and substrate phonons involved have comparable energies. Here, we perform a spectrally resolved study of the graphene photoresponse for mid-infrared light by measuring spatially resolved photocurrent over a broad frequency range (1000-1600 cm-1). We unveil the different mechanisms that give rise to photocurrent generation in graphene on a polar substrate. In particular, we find an enhancement of the photoresponse when the light excites bulk or surface phonons of the SiO2 substrate. This work paves the way for the development of graphene-based mid-infrared thermal sensing technology.
Publisher version (URL)http://doi.org/10.1021/nl502847v
Appears in Collections:(ICMM) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.