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Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
Anup V. Sanchela, Ajay D. Thakur, C. V. Tomy 
Corresponding Authors:
Anup V. Sanchela 
DOI #:
https://doi.org/10.1016/j.jallcom.2017.11.334 
Title:
Improvement in Thermoelectric Properties by Tailoring at In and Te Site in In2Te5 
Journal:
J. Electron. Mater.  
Year:
2016 
Volume:
45 
Page:
5540 
Keywords:
Thermoelectric, thermal conductivity, electrical conductivity, Seebeck coefficient, figure of merit, single crystal 
Abstract:
We study the role of substitutions at In and Te site in the thermoelectric behavior of In2Te5. Single crystals with compositions In2(Te1xSex)5 (x = 0, 0.05, 0.10) and Fe0.05In1.95(Te0.90Se0.10)5 were prepared using a modified Bridgman–Stockbarger technique. Electrical and thermal transport properties of these single crystals were measured in the temperature range of 6 K to 395 K. A substantial decrease in the thermal conductivity was observed in Fesubstituted samples, attributed to enhanced phonon scattering at point defects. Marked enhancement in the Seebeck coefficient S along with concomitant suppression of the electrical resistivity q was observed in Se-substituted single crystals. An overall enhancement of the thermoelectric figure of merit (zT) by a factor of 310 was observed in single-crystal Fe0.05In1.95(Te0.90Se0.10)5 compared with single crystals of the parent material In2Te5. 
Entered by:
Venkata Dantham on 2020-08-02 
 
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