TY - JOUR
T1 - Thermoelectric properties of co-doped (Bi0.98In0.02)2Te2.7Se0.3 /reduced graphene oxide composites prepared by solid-state reaction
AU - Hegde, Ganesh Shridhar
AU - Parol, Vinay
AU - Rao, Ashok
AU - Prabhu, A. N.
AU - Levinsky, Joshua J.B.
AU - Blake, Graeme R.
N1 - Funding Information:
Ganesh Shridhar Hegde (GSH) would like to acknowledge Manipal Academy of Higher Education for providing financial support from Dr T. M. A. doctoral fellowship. One of the authors (AR) would like to thank DST – FIST (Grant PS-1/2017/8 ) for Hall measurements. ANP is thankful for the financial support provided by UGC-DAE CSR , Mumbai, for the project grant UDCSR/MUM/AO/CRS-M-314/2020/812 GSH would like to show gratitude towards Dr. Mahesha M. G.and Dr. Sudha Kamath.
Funding Information:
Ganesh Shridhar Hegde (GSH) would like to acknowledge Manipal Academy of Higher Education for providing financial support from Dr T. M. A. doctoral fellowship. One of the authors (AR) would like to thank DST ? FIST (Grant PS-1/2017/8) for Hall measurements. ANP is thankful for the financial support provided by UGC-DAE CSR, Mumbai, for the project grant UDCSR/MUM/AO/CRS-M-314/2020/812 GSH would like to show gratitude towards Dr. Mahesha M. G.and Dr. Sudha Kamath.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2022/1
Y1 - 2022/1
N2 - The thermoelectric properties of co-doped (Bi0.98In0.02)2Te2.7Se0.3/reduced graphene oxide composites between 10 - 325 K are presented. X-ray diffraction confirms that the composites adopt a rhombohedral structure with space group R3¯m. Field emission scanning electron microscopy reveals an interface structure of reduced graphene oxide (rGO). N-type conducting behaviour is observed for all the samples, as ascertained by Hall effect and Seebeck coefficient measurements, with a carrier concentration of 1025/m3. The thermal conductivity and electrical resistivity of (Bi0.98In0.02)2Te2.7Se0.3/0.02 wt% reduced graphene oxide composite is found to decrease by 1.6 and 10 times respectively in comparison with that of (Bi0.98In0.02)2Te2.7Se0.3. The power factor is enhanced by 7 times for (Bi0.98In0.02)2Te2.7Se0.3/0.01 wt% rGO compared to that of (Bi0.98In0.02)2Te2.7Se0.3.
AB - The thermoelectric properties of co-doped (Bi0.98In0.02)2Te2.7Se0.3/reduced graphene oxide composites between 10 - 325 K are presented. X-ray diffraction confirms that the composites adopt a rhombohedral structure with space group R3¯m. Field emission scanning electron microscopy reveals an interface structure of reduced graphene oxide (rGO). N-type conducting behaviour is observed for all the samples, as ascertained by Hall effect and Seebeck coefficient measurements, with a carrier concentration of 1025/m3. The thermal conductivity and electrical resistivity of (Bi0.98In0.02)2Te2.7Se0.3/0.02 wt% reduced graphene oxide composite is found to decrease by 1.6 and 10 times respectively in comparison with that of (Bi0.98In0.02)2Te2.7Se0.3. The power factor is enhanced by 7 times for (Bi0.98In0.02)2Te2.7Se0.3/0.01 wt% rGO compared to that of (Bi0.98In0.02)2Te2.7Se0.3.
UR - http://www.scopus.com/inward/record.url?scp=85112560978&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85112560978&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2021.111517
DO - 10.1016/j.materresbull.2021.111517
M3 - Article
AN - SCOPUS:85112560978
SN - 0025-5408
VL - 145
JO - Materials Research Bulletin
JF - Materials Research Bulletin
M1 - 111517
ER -