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Facile Synthesis and Thermoelectric Properties of Self-assembled Bi2Te3 One-Dimensional Nanorod Bundles

Authors

  • Dr. Shuyan Song,

    1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Changchun 130022 (P.R. China)
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    • These authors contributed equally to this work

  • Jipeng Fu,

    1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Changchun 130022 (P.R. China)
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    • These authors contributed equally to this work

  • Xiyan Li,

    1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Changchun 130022 (P.R. China)
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  • Wei Gao,

    1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Changchun 130022 (P.R. China)
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  • Prof. Hongjie Zhang

    Corresponding author
    1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Changchun 130022 (P.R. China)
    • State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Changchun 130022 (P.R. China)
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Abstract

Self-assembled Bi2Te3 one-dimensional nanorod bundles have been fabricated by a low-cost and facile solvothermal method with ethylene diamine tetraacetic acid as an additive. The phase structures and morphologies of the samples were characterized by X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectrometry, and transmission electron microscope measurements. The growth mechanisms have been proposed based on the experimental results. The full thermoelectric properties of the nanorod bundles have been characterized and show a large improvement in the thermal conductivity attributed to phonon scattering of the nanostructures and then enhance the thermoelectric figure of merit. This work is promising for the realization of new types of highly efficient thermoelectric semiconductors by this method.

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