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dc.contributor.authorMir, Wasim Jeelani
dc.contributor.authorSharma, Anirudh
dc.contributor.authorVillalva, Diego Rosas
dc.contributor.authorLiu, Jiakai
dc.contributor.authorHaque, Mohammed
dc.contributor.authorShikin, Semen
dc.contributor.authorBaran, Derya
dc.date.accessioned2021-08-25T13:07:56Z
dc.date.available2021-08-25T13:07:56Z
dc.date.issued2021
dc.date.submitted2021-07-05
dc.identifier.citationMir, W. J., Sharma, A., Villalva, D. R., Liu, J., Haque, M. A., Shikin, S., & Baran, D. (2021). The ultralow thermal conductivity and tunable thermoelectric properties of surfactant-free SnSe nanocrystals. RSC Advances, 11(45), 28072–28080. doi:10.1039/d1ra05182b
dc.identifier.issn2046-2069
dc.identifier.doi10.1039/d1ra05182b
dc.identifier.urihttp://hdl.handle.net/10754/670793
dc.description.abstractMost studies to date on SnSe thermal transport are focused on single crystals and polycrystalline pellets that are obtained using high-temperature processing conditions and sophisticated instruments. The effects of using sub-10 nm-size SnSe nanocrystals on the thermal transport and thermoelectric properties have not been studied to the best of our knowledge. Here, we report the synthesis of sub-10 nm colloidal surfactant-free SnSe NCs at a relatively low temperature (80 °C) and investigate their thermoelectric properties. Pristine SnSe NCs exhibit p-type transport but have a modest power factor of 12.5 μW m−1 K−2 and ultralow thermal conductivity of 0.1 W m−1 K−1 at 473 K. Interestingly, the one-step post-synthesis treatment of NC film with methylammonium iodide can switch the p-type transport of the pristine film to n-type. The power factor improved significantly to 20.3 μW m−1 K−2, and the n-type NCs show record ultralow thermal conductivity of 0.14 W m−1 K−1 at 473 K. These surfactant-free SnSe NCs were then used to fabricate flexible devices that show superior performance to rigid devices. After 20 bending cycles, the flexible device shows a 34% loss in the power factor at room temperature (295 K). Overall, this work demonstrates p- and n-type transport in SnSe NCs via the use of simple one-step post-synthesis treatment, while retaining ultralow thermal conductivity.
dc.description.sponsorshipThis publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award no. OSR-CRG2018-3737 and OSR-2018-CARF/CCF-3079.
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttp://xlink.rsc.org/?DOI=D1RA05182B
dc.rightsThis article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/
dc.titleThe ultralow thermal conductivity and tunable thermoelectric properties of surfactant-free SnSe nanocrystals
dc.typeArticle
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalRSC Advances
dc.eprint.versionPublisher's Version/PDF
dc.identifier.volume11
dc.identifier.issue45
dc.identifier.pages28072-28080
kaust.personMir, Wasim Jeelani
kaust.personMir, Wasim Jeelani
kaust.personSharma, Anirudh
kaust.personVillalva, Diego Rosas
kaust.personLiu, Jiakai
kaust.personHaque, Mohammed
kaust.personShikin, Semen
kaust.personBaran, Derya
kaust.grant.numberOSR-2018-CARF/CCF-3079
kaust.grant.numberOSR-CRG2018-3737
dc.date.accepted2021-07-30
refterms.dateFOA2021-08-25T13:08:53Z
kaust.acknowledged.supportUnitCARF
kaust.acknowledged.supportUnitCCF
kaust.acknowledged.supportUnitCRG
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)


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