淡江大學機構典藏:Item 987654321/113667
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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/113667


    Title: Evolution of nanostructured single-phase CoSb3 thin films by low-energy ion beam induced mixing and their thermoelectric performance
    Authors: Manju Bala;Srashti Gupta;Sanjeev K. Srivastava;Sankarakumar Amrithapandian;Tripurari S. Tripathi;Surya K. Tripathi;Chung-Li Dong;Chi-Liang Chen;Devesh K. Avasthii;Kandasami Asokan
    Date: 2017-08-21
    Issue Date: 2018-06-08 12:10:17 (UTC+8)
    Abstract: Skutterudites are emerging as potential candidates that show high efficiency and thus provide an ideal platform for research. The properties of nanostructured films of skutterudites are different from those of the corresponding bulk. The present study reports the evolution of nanostructured single-phase CoSb3 fabricated by using low-energy ion irradiation of Co/Sb bilayer films and subsequent annealing at an optimized temperature and their Seebeck coefficients (S). The effects of ion beam parameters with annealing on the phase evolution and nanostructure modifications were studied. An increase in Xe+ ion fluence resulted in complete mixing of Co/Sb on postannealing forming flower-like nanostructures of single phase CoSb3. The temperature-dependent electrical resistivity (ρ) increases with the ion fluence because of defect creation which further increases on postannealing due to surface nanostructuring. The S of these films of CoSb3 is found to be higher and this is attributed to the formation of a uniform layer of nanostructured CoSb3 alloy thin film. The S and Hall coefficients of all these films are negative implying that they are n-type semiconductors.
    Relation: Physical Chemistry Chemical Physics 19(36), p.24886-24895
    DOI: 10.1039/C7CP03527F
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

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