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dc.contributor.authorVelusamy, Dhinesh
dc.contributor.authorEl Demellawi, Jehad K.
dc.contributor.authorEl-Zohry, Ahmed
dc.contributor.authorGiugni, Andrea
dc.contributor.authorLopatin, Sergei
dc.contributor.authorHedhili, Mohamed N.
dc.contributor.authorMansour, Ahmed
dc.contributor.authorDi Fabrizio, Enzo M.
dc.contributor.authorMohammed, Omar F.
dc.contributor.authorAlshareef, Husam N.
dc.date.accessioned2019-07-15T08:23:02Z
dc.date.available2019-07-15T08:23:02Z
dc.date.issued2019-06-20
dc.identifier.citationVelusamy, D. B., El-Demellawi, J. K., El-Zohry, A. M., Giugni, A., Lopatin, S., Hedhili, M. N., … Alshareef, H. N. (2019). MXenes for Plasmonic Photodetection. Advanced Materials, 1807658. doi:10.1002/adma.201807658
dc.identifier.doi10.1002/adma.201807658
dc.identifier.urihttp://hdl.handle.net/10754/656020
dc.description.abstractMXenes have recently shown impressive optical and plasmonic properties associated with their ultrathin-atomic-layer structure. However, their potential use in photonic and plasmonic devices has been only marginally explored. Photodetectors made of five different MXenes are fabricated, among which molybdenum carbide MXene (Mo2CTx) exhibits the best performance. Mo2CTx MXene thin films deposited on paper substrates exhibit broad photoresponse in the range of 400–800 nm with high responsivity (up to 9 A W−1), detectivity (≈5 × 1011 Jones), and reliable photoswitching characteristics at a wavelength of 660 nm. Spatially resolved electron energy-loss spectroscopy and ultrafast femtosecond transient absorption spectroscopy of the MXene nanosheets reveal that the photoresponse of Mo2CTx is strongly dependent on its surface plasmon-assisted hot carriers. Additionally, Mo2CTx thin-film devices are shown to be relatively stable under ambient conditions, continuous illumination and mechanical stresses, illustrating their durable photodetection operation in the visible spectral range. Micro-Raman spectroscopy conducted on bare Mo2CTx film and on gold electrodes allowing for surface-enhanced Raman scattering demonstrates surface chemistry and a specific low-frequency band that is related to the vibrational modes of the single nanosheets. The specific ability to detect and excite individual surface plasmon modes provides a viable platform for various MXene-based optoelectronic applications.
dc.description.sponsorshipD.B.V. and J.K.E. contributed equally to this work. Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST). The authors thank Dr. Rajeshkumar Mohanaraman for his help in the MAX phase synthesis. The authors also thank Fangwang Ming for his help with the XRD measurements and Qui Jiang for several useful discussions.
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/abs/10.1002/adma.201807658
dc.rightsArchived with thanks to Advanced Materials
dc.subjectflexible photodetectors
dc.subjectlow-frequency Raman spectroscopy
dc.subjectmolybdenum carbide
dc.subjectMXenes
dc.subjectsurface plasmons
dc.titleMXenes for Plasmonic Photodetection
dc.typeArticle
dc.contributor.departmentChemical Science
dc.contributor.departmentChemical Science Program
dc.contributor.departmentElectron Microscopy
dc.contributor.departmentFunctional Nanomaterials and Devices Research Group
dc.contributor.departmentKAUST Catalysis Center
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentKAUST Solar Center
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentPhysical Sciences and Engineering
dc.contributor.departmentSurface Science
dc.contributor.departmentUltrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
dc.identifier.journalAdvanced Materials
dc.rights.embargodate2020-06-20
dc.eprint.versionPost-print
kaust.personVelusamy, Dhinesh
kaust.personEl Demellawi, Jehad K.
kaust.personEl-Zohry, Ahmed
kaust.personGiugni, Andrea
kaust.personLopatin, Sergei
kaust.personHedhili, Mohamed N.
kaust.personMansour, Ahmed
kaust.personDi Fabrizio, Enzo M.
kaust.personMohammed, Omar F.
kaust.personAlshareef, Husam N.


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