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The Bi0.5Sb1.4−xNaxIn0.1Te3 (x = 0.02–0.20) alloys were fabricated by high vacuum melting and hot-pressing technique. The phase structures and morphology of the bulk samples were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. Effects of In and Na co-doping on the electrical and thermal transport properties were studied from room temperature to 500 K...
The Bi0.5Na0.02Sb1.48−xInxTe3 alloys (x = 0.02–0.20) were synthesized by vacuum melting and hot pressing methods at 753 K, 60 MPa for 30 min. Effects of Na and In dual partial substitutions for Sb on the thermoelectric properties were investigated from 300 to 500 K. Substituting Sb with Na and In can enhance the Seebeck coefficient effectively near room temperature. The electrical resistivity of...
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