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Towards new thermoelectrics : tin selenide/modified graphene oxide nanocomposites

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dc.contributor.authorProtsak, Iryna
dc.contributor.authorChampet, Simon
dc.contributor.authorChiang, Chang-Yang
dc.contributor.authorZhou, Wuzong
dc.contributor.authorPopuri, Srinivas
dc.contributor.authorBos, Jan-Willem
dc.contributor.authorMisra, Dinesh
dc.contributor.authorMorozov, Yevhenii
dc.contributor.authorGregory, Duncan
dc.date.accessioned2020-03-29T00:32:02Z
dc.date.available2020-03-29T00:32:02Z
dc.date.issued2019-03-31
dc.identifier.citationProtsak , I , Champet , S , Chiang , C-Y , Zhou , W , Popuri , S , Bos , J-W , Misra , D , Morozov , Y & Gregory , D 2019 , ' Towards new thermoelectrics : tin selenide/modified graphene oxide nanocomposites ' , ACS Omega , vol. 4 , no. 3 , pp. 6010-6019 . https://doi.org/10.1021/acsomega.8b03146en
dc.identifier.issn2470-1343
dc.identifier.otherPURE: 258074365
dc.identifier.otherPURE UUID: 30201038-b826-44ac-9b64-0ae7ddbededa
dc.identifier.otherWOS: 000462921900163
dc.identifier.otherScopus: 85063647034
dc.identifier.otherWOS: 000462921900163
dc.identifier.otherORCID: /0000-0001-9752-7076/work/62668235
dc.identifier.otherPubMed: 31459748
dc.identifier.urihttps://hdl.handle.net/10023/19725
dc.descriptionThis work was financially supported by the EPSRC (EP/P510968/1).en
dc.description.abstractNew nanocomposites have been prepared by combining tin selenide (SnSe) with graphene oxide (GO) in a simple aqueous solution process followed by ice templating (freeze casting). The resulting integration of SnSe within the GO matrix leads to modifications of electrical transport properties and the possibility of influencing the power factor (S2σ). Moreover, these transport properties can then be further improved (S, σ increased) by funtionalisation of the GO surface to form modified nanocomposites (SnSe/GOmod) with enhanced power factors in comparison to unmodified nanocomposites (SnSe/GO) and “bare” SnSe itself. Functionalising the GO by reaction with octadecyltrimethoxysilane (ODTS; C21H46O3Si) and triethylamine (TEA;(CH3CH2)3N) switches SnSe from p-type to n-type conductivity with an appreciable Seebeck coefficient and high electrical conductivity (1257 S·m-1 at 539 K); yielding a 20-fold increase in the power factor compared to SnSe itself, prepared by the same route. These findings present new possibilities to design inexpensive and porous nanocomposites based on metal chalcogenides and functionalized carbon-derived matrices.
dc.format.extent10
dc.language.isoeng
dc.relation.ispartofACS Omegaen
dc.rightsCopyright © 2019 American Chemical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1021/acsomega.8b03146en
dc.subjectSnSeen
dc.subjectGraphene oxideen
dc.subjectFunctionalisationen
dc.subjectNanocompositesen
dc.subjectThermoelectric propertiesen
dc.subjectQD Chemistryen
dc.subjectNDASen
dc.subject.lccQDen
dc.titleTowards new thermoelectrics : tin selenide/modified graphene oxide nanocompositesen
dc.typeJournal articleen
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.identifier.doihttps://doi.org/10.1021/acsomega.8b03146
dc.description.statusPeer revieweden
dc.date.embargoedUntil2020-03-29


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