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dc.contributor.authorGovorov, A. O.en_US
dc.contributor.authorZhang, H.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.contributor.authorGun’ko, Y. K.en_US
dc.date.accessioned2015-07-28T12:03:17Z
dc.date.available2015-07-28T12:03:17Z
dc.date.issued2014-02en_US
dc.identifier.issn1748-0132
dc.identifier.urihttp://hdl.handle.net/11693/12825
dc.description.abstracthe paper reviews physical concepts related to the collective dynamics of plasmon excitations in metal nanocrystals with a focus on the photogeneration of energetic carriers. Using quantum linear response theory, we analyze the wave function of a plasmon in nanostructures of different sizes. Energetic carriers are efficiently generated in small nanocrystals due to the non-conservation of momentum of electrons in a confined nanoscale system. On the other hand, large nanocrystals and nanostructures, when driven by light, produce a relatively small number of carriers with large excitation energies. Another important factor is the polarization of the exciting light. Most efficient generation and injection of high-energy carriers can be realized when the optically induced electric current is along the smallest dimension of a nanostructure and also normal to its walls and, for efficient injection, the current should be normal to the collecting barrier. Other important properties and limitations: (1) intra-band transitions are preferable for generation of energetic electrons and dominate the absorption for relatively long wavelengths (approximately >600 nm), (2) inter-band transitions efficiently generate energetic holes and (3) the carrier-generation and absorption spectra can be significantly different. The described physical properties of metal nanocrystals are essential for a variety of potential applications utilizing hot plasmonic electrons including optoelectronic signal processing, photodetection, photocatalysis and solar-energy harvesting. © 2014 Elsevier Ltd.en_US
dc.language.isoEnglishen_US
dc.source.titleNano Today: an international rapid reviews journalen_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.nantod.2014.02.006en_US
dc.subjectPlasmonen_US
dc.subjectPlasmonic electronsen_US
dc.subjectInjection of electronsen_US
dc.subjectNanostructuresen_US
dc.subjectPhotoelectric effecten_US
dc.subjectPhotodetectorsen_US
dc.subjectPhotocatalysisen_US
dc.titlePhotogeneration of hot plasmonic electrons with metal nanocrystals: quantum description and potential applicationsen_US
dc.typeArticleen_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.citation.spage85en_US
dc.citation.epage101en_US
dc.citation.volumeNumber9en_US
dc.citation.issueNumber1en_US
dc.identifier.doi10.1016/j.nantod.2014.02.006en_US
dc.publisherElsevier Ltden_US
dc.contributor.bilkentauthorDemir, Hilmi Volkanen_US


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