Enhanced of thermoelectric properties and effects of Sb doping on the electrical properties of Tl10-xSbxTe6 nano-particles

Enhanced of thermoelectric properties and effects of Sb doping on the electrical properties of Tl10-xSbxTe6 nano-particles

Waqas M. KhanWiqar H. Shah Sabir Khan Sufaid Shah Waqar A. Syed Akif Safeen Kashif Safeen 

Department of Physics, Faculty of Basic and Applied Sciences, International Islamic University, Islamabad 46000, Pakistan

Department of Physics, University of Poonch, Rawalakot, AJK 12350, Pakistan

Department of Physics, Abdul Wali Khan University, Mardan 23200, Pakistan

Corresponding Author Email: 
wiqarhussain@yahoo.com
Page: 
602-606
|
DOI: 
https://doi.org/10.18280/ijht.360224
Received: 
6 October 2017
|
Accepted: 
23 April 2018
|
Published: 
30 June 2018
| Citation

OPEN ACCESS

Abstract: 

We have prepared the thallium antimony telluride with different doping concentration of Sb, Tl10-xSbxTe6 (x = 1, 1.25, 1.50, 1.75, 2) using solid state reaction techniques. Furthermore, Nano-particles were prepared from the ingot of the respective compound by ball milling techniques. X-rays diffraction analysis confirmed the phase purity of the compound, as no extra peaks were observed. The miller indices and lattice constant has been determined from the XRD data. Energy dispersive x-rays spectroscopy result confirmed the stoichiometric elemental composition of Tl10-xSbxTe6 compound. With increasing antimony (Sb) content the Seebeck coefficient (S) was increased, due to the affected electron hole ratio in the system. The contrary behavior of Seebeck co-efficient and electrical conductivity give rise to enhancement in power factor. Our study allows envisaging the application of Tl10-xSbxTe6 as one of the suitable materials for thermoelectric generator.

Keywords: 

Sb-doped tellurium telluride nano-materials, electron holes competition, seebeck co-efficient, electrical conductivity, power factor

1. Introduction
2. Experimental Section
3. Result and Discussion
4. Power Factor
5. Conclusion
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