The effect of different milling time on thermoelectric properties of bismuth telluride (Bi2Te3) was investigated. The nanomaterial was prepared by varying the ball milling time and followed by hot press sintering. The crystal structure and phase formation were verified by X-ray diffraction and Raman Spectroscopy. The experimental results show that electrical conductivity increases whereas thermal conductivity decreases with increasing milling time. The negative sign of seebeck coefficient indicate the n-type nature with majority charge carriers of electrons. A maximum figure of merit about 0.55 is achieved for l5hr ball milled Bi2Te3 sample. The present study demonstrates the simple and cost-effective method for synthesis of Bi2Te3 thermoelectric material at large scale thermoelectric applications.
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10 April 2018
DAE SOLID STATE PHYSICS SYMPOSIUM 2017
26–30 December 2017
Mumbai, India
Research Article|
April 10 2018
Effect of ball milling time on thermoelectric properties of bismuth telluride nanomaterials
Poonam Khade;
Poonam Khade
1
Novel Materials Research Laboratory, Department of Physics, Barkatullah University
, Bhopal, 462026, India
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Toshi Bagwaiya;
Toshi Bagwaiya
1
Novel Materials Research Laboratory, Department of Physics, Barkatullah University
, Bhopal, 462026, India
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Shovit Bhattacharaya;
Shovit Bhattacharaya
2
Technical Physics Division, Bhabha Atomic Research Centre
, Mumbai, 400085, India
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Ajay Singh;
Ajay Singh
2
Technical Physics Division, Bhabha Atomic Research Centre
, Mumbai, 400085, India
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Purushottam Jha;
Purushottam Jha
2
Technical Physics Division, Bhabha Atomic Research Centre
, Mumbai, 400085, India
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Vilas Shelke
Vilas Shelke
a)
1
Novel Materials Research Laboratory, Department of Physics, Barkatullah University
, Bhopal, 462026, India
a)Corresponding author: [email protected]
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a)Corresponding author: [email protected]
AIP Conf. Proc. 1942, 110052 (2018)
Citation
Poonam Khade, Toshi Bagwaiya, Shovit Bhattacharaya, Ajay Singh, Purushottam Jha, Vilas Shelke; Effect of ball milling time on thermoelectric properties of bismuth telluride nanomaterials. AIP Conf. Proc. 10 April 2018; 1942 (1): 110052. https://doi.org/10.1063/1.5029035
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