Thermoelectric Properties of SnO₂/Bi₂Te₃ Composite

Abstract:

In this study, SnO₂ nanoparticles of wt% 2, 4, 6, and 8 were uniformly composite in Bi₂Te₃ matrix. SnO₂ nanoparticle was synthesized using co-precipitation method. The result shows that based on XRD and EDS analysis the composites do not contain any impurities. The thermoelectric properties of the composites strongly depend on the Seebeck coefficient. The highest value of Seebeck coefficient of -177 µV/K is obtained at around 375 K for the 4% SnO₂/Bi₂Te₃ sample. This yields the highest value of the power factor of 4.0 × 10^-3 Wm^-1K^-1 compared to the pure Bi₂Te₃ synthesized using the same procedure by 14.3%. This result demonstrates that the thermoelectric properties of Bi₂Te₃ can be improved using oxide nanoparticles.

• Periodical: Materials Science Forum (Volume 1028)
• Pages: 99-104
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1028.99
• Online since: April 2021
• Authors: Asep Ridwan Nugraha*, Nadya Larasati Kartika, Dedi Dedi, Agustinus Agung Nugroho
• Keywords: Bi₂Te₃, High Power Factor, Nanocomposite, SnO₂, Thermoelectric

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