Retained carrier-mobility and enhanced plasmonic-photovoltaics of graphene via ring-centered η6 functionalization and nano-interfacing

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dc.contributor.author Che, Songwei
dc.contributor.author Jasuja, Kabeer
dc.contributor.author Behura, Sanjay K.
dc.contributor.author Nguyen, Phong
dc.contributor.author Sreeprasad, T. S.
dc.contributor.author Berry, Vikas
dc.date.accessioned 2017-06-13T11:59:19Z
dc.date.available 2017-06-13T11:59:19Z
dc.date.issued 2017-06
dc.identifier.citation Che, Songwei; Jasuja, Kabeer; Behura, Sanjay K.; Nguyen, Phong; Sreeprasad, T. S. and Berry, Vikas, “Retained carrier-mobility and enhanced plasmonic-photovoltaics of graphene via ring-centered η6 functionalization and nano-interfacing”, Nano Letters, DOI: 10.1021/acs.nanolett.7b01458, Jun. 2017. en_US
dc.identifier.issn 1530-6984
dc.identifier.issn 1530-6992
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2965
dc.identifier.uri http://dx.doi.org/10.1021/acs.nanolett.7b01458
dc.description.abstract Binding graphene with auxiliary nanoparticles for plasmonics, photovoltaics, and/or optoelectronics, while retaining the trigonal-planar bonding of sp2 hybridized carbons to maintain its carrier-mobility has remained a challenge. The conventional nanoparticle-incorporation route for graphene is to create nucleation/attachment sites via ‘carbon-centered’ covalent functionalization, which changes the local hybridization of carbon atoms from trigonal-planar sp2 to tetrahedral sp3. This disrupts the lattice planarity of graphene, thus dramatically deteriorating its mobility and innate superior properties. Here, we show large-area, vapor-phase, ‘ring-centered’ hexahapto (η6) functionalization of graphene to create nucleation-sites for silver nanoparticles (AgNPs) without disrupting its sp2 character. This is achieved by the grafting of chromium tricarbonyl [Cr(CO)3] with all six carbon atoms (sigma-bonding) in the benzenoid ring on graphene to form an (η6-graphene)Cr(CO)3 complex. This non-destructive functionalization preserves the lattice continuum with a retention in charge carrier mobility (9% increase at 10 K); and with AgNPs attached on graphene/n-Si solar cells, we report an ~11-fold plasmonic-enhancement in the power conversion efficiency (1.24%). en_US
dc.description.statementofresponsibility by Songwei Che, Kabeer Jasuja, Sanjay K. Behura, Phong Nguyen, T. S. Sreeprasad and Vikas Berry
dc.format.extent Vol.17, Issue 7, pp. 4381–4389
dc.language.iso en_US en_US
dc.publisher American chemical society en_US
dc.title Retained carrier-mobility and enhanced plasmonic-photovoltaics of graphene via ring-centered η6 functionalization and nano-interfacing en_US
dc.type Article en_US
dc.relation.journal Nano Letters


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