Materials Science and Nanotechnology

Investigating Thermoelectric Properties of Yb₃Si₅ in a Wide Temperature Range for Low Temperature Thermoelectric Applications

Webinar on 6^th World Congress on Nanomaterials
January 13, 2022 | Webinar

Fahim Ahmed

University of Education Lahore, Pakistan

Scientific Tracks Abstracts : Mater Sci Nanotechnol

Abstract:

In this research we prepared Yb3CoxSi5-x where x=0, 0.1, 0.15, 0.20 and investigated their thermoelectric properties. Powder X-ray diffraction analysis confirmed all main peaks indexed to Yb3Si5 phase. Small amount of Si and Yb were observed as impurity. Thermal conductivity values are quite large for an ideal thermoelectric material, thereby maximum ZT value of 0.07 was measured at 300 K for non-doped Yb3Si5. A very large maximum power factor of ~ 4.70 mWm-1K -2 was observed at 72 K and room temperature value ~ 1.56 mWm-1K -2 for the pristine sample. These results shows that Yb-Si compounds have large potential to be used as low temperature TE applications in the future.

Biography:

Fahim Ahmed a Professor at Department of Physics, Division of Science and Technology, University of Education Lahore, Pakistan. His research interests dealt with Thermal conductivity, Power factor, Nanomaterials, Thermoelectricity, particularly the development of Thermoelectric Properties incorporating nanomaterials.

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