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<p>Alloys based on bismuth telluride are an excellent choice for thermoelectricity (TE) at low temperatures. In the present study, the melt-quenching approach is used to develop (Bi<sub>2</sub>Te<sub>3</sub>)<sub>1-<i>x</i></sub> Sn<sub><i>x</i></sub> nanostructures for a range of <i>x</i> values, varying from 0.05 to 0.20. The current study establishes that alloying produces nanostructure and reduces the structural dimensions of TE materials to the nanoscale. The Field-Effect Scanning Electron Microscopy (FESEM) imaging revealed a surface morphology that resembled a nanoplate and that exhibited a rhombohedral crystal structure with space group R-3&#xa0;m, which was confirmed by X-ray diffraction (XRD) measurement. Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) thermal analysis confirm that the material maintains excellent thermal stability. Information for producing a Bi–Te–Sn-based thermoelectric material with great performance at low temperatures using novel alloying techniques is presented in this report.</p>

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Structural and thermal analysis of (Bi2Te3)1-x Snx nanostructured thermoelectric telluride (tet) material

  • 期刊论文

  • 发表日期：

    2026年1月6日

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  • Shailendra Kumar Gupta,
  • Manoj Kumar,
  • Sudhir Kumar Sharma,
  • Pragya Agarwal,
  • Anju Dixit,
  • Suresh Kumar Sharma

摘要

Alloys based on bismuth telluride are an excellent choice for thermoelectricity (TE) at low temperatures. In the present study, the melt-quenching approach is used to develop (Bi2Te3)1-x Snx nanostructures for a range of x values, varying from 0.05 to 0.20. The current study establishes that alloying produces nanostructure and reduces the structural dimensions of TE materials to the nanoscale. The Field-Effect Scanning Electron Microscopy (FESEM) imaging revealed a surface morphology that resembled a nanoplate and that exhibited a rhombohedral crystal structure with space group R-3 m, which was confirmed by X-ray diffraction (XRD) measurement. Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) thermal analysis confirm that the material maintains excellent thermal stability. Information for producing a Bi–Te–Sn-based thermoelectric material with great performance at low temperatures using novel alloying techniques is presented in this report.