Effects of morphology on the thermoelectric properties of Al-doped ZnO

Li Han, Ngo Van Nong, Wei Zhang, Le Thanh Hung, Tim Holgate, Kazunari Tashiro, Michitaka Ohtaki, Nini Pryds, Søren Linderoth

    Research output: Contribution to journalArticle

    31 Citations (Scopus)

    Abstract

    The nanoparticles of Al-doped ZnO were successfully grown into rod-like and platelet-like morphologies by soft chemical routes. These powders were consolidated using spark plasma sintering (SPS) technique. The samples consolidated from rods and platelets exhibited characteristic structures with preferential orientation while the sample consolidated from nanoparticles did not show any sign of preferential orientation. The measured ZT values along the preferred orientation directions were found to be 0.16 and 0.25 at 1223 K for the samples consolidated from rods and platelets, respectively. The sample consolidated from nanoparticles exhibited fine grains and highly distributed nanoprecipitates, resulting in a ZT value of 0.3 at 1223 K due to the lower thermal conductivity resulting from nanostructuring. Using the simple parabolic band model and Debye-Callaway thermal transport model, the anisotropic properties of the nanostructured samples were elucidated and the influence of the grain size and nanoprecipitates on the electron and phonon transport was analyzed and discussed in detail.

    Original languageEnglish
    Pages (from-to)12353-12361
    Number of pages9
    JournalRSC Advances
    Volume4
    Issue number24
    DOIs
    Publication statusPublished - Mar 11 2014

    Fingerprint

    Platelets
    Nanoparticles
    Spark plasma sintering
    Powders
    Thermal conductivity
    Electrons

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)
    • Chemical Engineering(all)

    Cite this

    Han, L., Van Nong, N., Zhang, W., Hung, L. T., Holgate, T., Tashiro, K., ... Linderoth, S. (2014). Effects of morphology on the thermoelectric properties of Al-doped ZnO. RSC Advances, 4(24), 12353-12361. https://doi.org/10.1039/c3ra47617k

    Effects of morphology on the thermoelectric properties of Al-doped ZnO. / Han, Li; Van Nong, Ngo; Zhang, Wei; Hung, Le Thanh; Holgate, Tim; Tashiro, Kazunari; Ohtaki, Michitaka; Pryds, Nini; Linderoth, Søren.

    In: RSC Advances, Vol. 4, No. 24, 11.03.2014, p. 12353-12361.

    Research output: Contribution to journalArticle

    Han, L, Van Nong, N, Zhang, W, Hung, LT, Holgate, T, Tashiro, K, Ohtaki, M, Pryds, N & Linderoth, S 2014, 'Effects of morphology on the thermoelectric properties of Al-doped ZnO', RSC Advances, vol. 4, no. 24, pp. 12353-12361. https://doi.org/10.1039/c3ra47617k
    Han L, Van Nong N, Zhang W, Hung LT, Holgate T, Tashiro K et al. Effects of morphology on the thermoelectric properties of Al-doped ZnO. RSC Advances. 2014 Mar 11;4(24):12353-12361. https://doi.org/10.1039/c3ra47617k
    Han, Li ; Van Nong, Ngo ; Zhang, Wei ; Hung, Le Thanh ; Holgate, Tim ; Tashiro, Kazunari ; Ohtaki, Michitaka ; Pryds, Nini ; Linderoth, Søren. / Effects of morphology on the thermoelectric properties of Al-doped ZnO. In: RSC Advances. 2014 ; Vol. 4, No. 24. pp. 12353-12361.
    @article{2de35a91b123405dad42f4a0e908066f,
    title = "Effects of morphology on the thermoelectric properties of Al-doped ZnO",
    abstract = "The nanoparticles of Al-doped ZnO were successfully grown into rod-like and platelet-like morphologies by soft chemical routes. These powders were consolidated using spark plasma sintering (SPS) technique. The samples consolidated from rods and platelets exhibited characteristic structures with preferential orientation while the sample consolidated from nanoparticles did not show any sign of preferential orientation. The measured ZT values along the preferred orientation directions were found to be 0.16 and 0.25 at 1223 K for the samples consolidated from rods and platelets, respectively. The sample consolidated from nanoparticles exhibited fine grains and highly distributed nanoprecipitates, resulting in a ZT value of 0.3 at 1223 K due to the lower thermal conductivity resulting from nanostructuring. Using the simple parabolic band model and Debye-Callaway thermal transport model, the anisotropic properties of the nanostructured samples were elucidated and the influence of the grain size and nanoprecipitates on the electron and phonon transport was analyzed and discussed in detail.",
    author = "Li Han and {Van Nong}, Ngo and Wei Zhang and Hung, {Le Thanh} and Tim Holgate and Kazunari Tashiro and Michitaka Ohtaki and Nini Pryds and S{\o}ren Linderoth",
    year = "2014",
    month = "3",
    day = "11",
    doi = "10.1039/c3ra47617k",
    language = "English",
    volume = "4",
    pages = "12353--12361",
    journal = "RSC Advances",
    issn = "2046-2069",
    publisher = "Royal Society of Chemistry",
    number = "24",

    }

    TY - JOUR

    T1 - Effects of morphology on the thermoelectric properties of Al-doped ZnO

    AU - Han, Li

    AU - Van Nong, Ngo

    AU - Zhang, Wei

    AU - Hung, Le Thanh

    AU - Holgate, Tim

    AU - Tashiro, Kazunari

    AU - Ohtaki, Michitaka

    AU - Pryds, Nini

    AU - Linderoth, Søren

    PY - 2014/3/11

    Y1 - 2014/3/11

    N2 - The nanoparticles of Al-doped ZnO were successfully grown into rod-like and platelet-like morphologies by soft chemical routes. These powders were consolidated using spark plasma sintering (SPS) technique. The samples consolidated from rods and platelets exhibited characteristic structures with preferential orientation while the sample consolidated from nanoparticles did not show any sign of preferential orientation. The measured ZT values along the preferred orientation directions were found to be 0.16 and 0.25 at 1223 K for the samples consolidated from rods and platelets, respectively. The sample consolidated from nanoparticles exhibited fine grains and highly distributed nanoprecipitates, resulting in a ZT value of 0.3 at 1223 K due to the lower thermal conductivity resulting from nanostructuring. Using the simple parabolic band model and Debye-Callaway thermal transport model, the anisotropic properties of the nanostructured samples were elucidated and the influence of the grain size and nanoprecipitates on the electron and phonon transport was analyzed and discussed in detail.

    AB - The nanoparticles of Al-doped ZnO were successfully grown into rod-like and platelet-like morphologies by soft chemical routes. These powders were consolidated using spark plasma sintering (SPS) technique. The samples consolidated from rods and platelets exhibited characteristic structures with preferential orientation while the sample consolidated from nanoparticles did not show any sign of preferential orientation. The measured ZT values along the preferred orientation directions were found to be 0.16 and 0.25 at 1223 K for the samples consolidated from rods and platelets, respectively. The sample consolidated from nanoparticles exhibited fine grains and highly distributed nanoprecipitates, resulting in a ZT value of 0.3 at 1223 K due to the lower thermal conductivity resulting from nanostructuring. Using the simple parabolic band model and Debye-Callaway thermal transport model, the anisotropic properties of the nanostructured samples were elucidated and the influence of the grain size and nanoprecipitates on the electron and phonon transport was analyzed and discussed in detail.

    UR - http://www.scopus.com/inward/record.url?scp=84897731649&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84897731649&partnerID=8YFLogxK

    U2 - 10.1039/c3ra47617k

    DO - 10.1039/c3ra47617k

    M3 - Article

    AN - SCOPUS:84897731649

    VL - 4

    SP - 12353

    EP - 12361

    JO - RSC Advances

    JF - RSC Advances

    SN - 2046-2069

    IS - 24

    ER -