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    Graphene-Au nanoparticle based vertical heterostructures: a novel route towards high- ZT Thermoelectric devices

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    Type
    Article
    Authors
    Juang, Zhen-Yu
    Tseng, Chien-Chih cc
    Shi, Yumeng
    Hsieh, Wen-Pin
    Ryuzaki, Sou
    Saito, Noboru
    Hsiung, Chia-En
    Chang, Wen-Hao cc
    Hernandez, Yenny
    Han, Yu cc
    Tamada, Kaoru
    Li, Lain-Jong cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Science Program
    Material Science and Engineering Program
    Nanostructured Functional Materials (NFM) laboratory
    Physical Science and Engineering (PSE) Division
    Date
    2017-06-03
    Online Publication Date
    2017-06-03
    Print Publication Date
    2017-08
    Permanent link to this record
    http://hdl.handle.net/10754/624034
    
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    Abstract
    Monolayer graphene exhibits impressive in-plane thermal conductivity (>1000Wm–1 K–1). However, the out-of-plane thermal transport is limited due to the weak van der Waals interaction, indicating the possibility of constructing a vertical thermoelectric (TE) device. Here, we propose a cross-plane TE device based on the vertical heterostructures of few-layer graphene and gold nanoparticles (AuNPs) on Si substrates, where the incorporation of AuNPs further inhibits the phonon transport and enhances the electrical conductivity along vertical direction. A measurable Seebeck voltage is produced vertically between top graphene and bottom Si when the device is put on a hot surface and the figure of merit ZT is estimated as 1 at room temperature from the transient Harman method. The polarity of the output voltage is determined by the carrier polarity of the substrate. The device concept is also applicable to a flexible and transparent substrate as demonstrated.
    Citation
    Juang Z-Y, Tseng C-C, Shi Y, Hsieh W-P, Ryuzaki S, et al. (2017) Graphene-Au nanoparticle based vertical heterostructures: a novel route towards high- ZT Thermoelectric devices. Nano Energy. Available: http://dx.doi.org/10.1016/j.nanoen.2017.06.004.
    Sponsors
    This work was supported by the Ministry of Science and Technology of Taiwan under Contract No. MOST 104 – 2112 – M – 006 – 001, MOST 103–2112-M-001 −001 -MY3 and MOST 104–2112-M-001 −045. LJL, CCT, YS acknowledge the support from King Abdullah University of Science and Technology. Y.S. acknowledges the support from the Thousand Young Talents Program of China, the National Natural Science Foundation of China (Grant No. 51602200) and Educational Commission of Guangdong Province (Grant No. 2016KZDXM008). This project was supported by Shenzhen Peacock Plan (Grant No. KQTD2016053112042971).
    Publisher
    Elsevier BV
    Journal
    Nano Energy
    DOI
    10.1016/j.nanoen.2017.06.004
    Additional Links
    http://www.sciencedirect.com/science/article/pii/S2211285517303579
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.nanoen.2017.06.004
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Science Program; Material Science and Engineering Program

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