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Thermoelectric properties of hot pressed CZTS micro spheres synthesized by microwave method

Published online by Cambridge University Press:  13 February 2018

Sarita Devi Sharma  and
Sonnathi Neeleshwar
Sarita Devi Sharma
Affiliation:
University School of Basic & Applied Sciences, GGS Indraprastha University, New Delhi, India
Sonnathi Neeleshwar*
Affiliation:
University School of Basic & Applied Sciences, GGS Indraprastha University, New Delhi, India
*
*email: sn@ipu.ac.in
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Abstract

Microwave synthesis of Copper Zinc Tin Sulphide (CZTS) sphere like particles has been demonstrated. The structural and morphological properties of CZTS particles are characterized by XRD, SEM and Raman spectroscopy and subsequently thermoelectric properties are investigated. XRD results of prepared powder sample matches well with tetragonal crystal structure of CZTS bulk. No other impurity phase has been detected from the XRD analysis. Raman spectrum further confirms the formation of single phase CZTS with characteristics peak for CZTS at 334.1 cm-1. SEM studies reveal that the CZTS particles are spherical in shape with uniform sizes of ∼ 250-350 nm. Hot pressed CZTS system shows a power factor ∼21 µW/mK2 and ZT∼ 0.024 at 623 K. Significant enhancement in the Figure of merit for CZTS system is observed in comparison to reported nanostructures of the same system may be due to increased electrical conductivity.

Keywords

hot pressingthermoelectricRaman spectroscopy
Type
Articles
Information
MRS Advances , Volume 3 , Issue 24: Energy and Sustainability , 2018 , pp. 1373 - 1378
Copyright
Copyright © Materials Research Society 2018 

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