Abstract
We studied the influence of Ba 2+ doping on the thermoelectric properties of the p-type Bi 1–x Ba x CuSeO (0 ≤ x ≤ 0.21) fabricated by spark plasma sintering. The substitution of Ba 2+ for Bi 3+ gradually increased the electrical and thermal conductivities and decreased the Seebeck coefficient, which were due to the increased hole concentration. The largest value of dimensionless figure-of-merit (0.57) was obtained for the Bi 0.86 Ba 0.14 CuSeO at 500 °C, which was over three times greater than that of pristine BiCuSeO (0.18) at 500 °C. We believe that the thermoelectric properties of BiCuSeO were substantially enhanced through the partial substitution of Ba 2+ for Bi 3+ .
| Original language | English |
|---|---|
| Pages (from-to) | 9604-9610 |
| Number of pages | 7 |
| Journal | Ceramics International |
| Volume | 45 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2019 May |
| Externally published | Yes |
Bibliographical note
Funding Information:This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2017R1D1A1B03031196 ).
Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2017R1D1A1B03031196).
Publisher Copyright:
© 2018 Elsevier Ltd and Techna Group S.r.l.
Keywords
- Electrical conductivity
- Electrical properties
- Electron microscopy
- Microstructure-final
- Sintering
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Process Chemistry and Technology
- Surfaces, Coatings and Films
- Materials Chemistry