Screen-printed bismuth telluride nanostructured composites for flexible thermoelectric applications
نویسندگان
چکیده
Abstract We herein report the results of a facile two-step surfactant assisted reflux synthesis bismuth telluride (Bi 2 Te 3 ) nanowires (NWs). The as-synthesised NWs had diameters ranging from 70 to 110 nm with length varying between 0.4 and µ m preferential lattice orientation (0 1 5) as determined by grazing incidence x-ray diffraction. demonstrate for first time that solvent/binder paste formulation N -methyl-2-pyrrolidone/polyvinylidene fluoride (PVDF) is suitable screen-printing Bi potential fabrication flexible thermoelectric (TE) materials. wt% PVDF in composite films was varied 10% 20% identify optimal composition view achieving maximum film flexibility whilst retaining best TE performance. were screen-printed onto Kapton substrates subjected post-printing annealing process improve annealed screen printed /PVDF NW composites yielded Seebeck coefficient ?192 V K ?1 power factor 34 W ?2 at 225 K. found be intact even after 2000 bending cycles.
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ژورنال
عنوان ژورنال: JPhys energy
سال: 2022
ISSN: ['2515-7655']
DOI: https://doi.org/10.1088/2515-7655/ac572e