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High thermoelectric performance of rapidly microwave-synthesized Sn1−δS
- Source :
- 'Materials Advances ', vol: 1, pages: 845-853 (2020)
- Publication Year :
- 2020
- Publisher :
- Royal Society of Chemistry (RSC), 2020.
-
Abstract
- Phase-pure polycrystalline Sn1−δS has been prepared using a one-step microwave-hydrothermal procedure. Its structural characterization by neutron powder diffraction and transmission electron microscopy shows an orthorhombic Pnma phase at room temperature with the presence of a significant amount of Sn vacancies (Sn0.87S), randomly located in the crystal structure. This work proves that this inexpensive 2D material, constituted by high abundance elements, is a promising candidate for thermoelectric applications. This is confirmed by its relatively high carrier density and good mobility (2.5 × 1018 cm−3 and 13 cm2 V−1 s−1 at room temperature, respectively) found in the microwave-hydrothermal-synthesized sample, which favours high thermoelectric performance. In addition, a remarkably high Seebeck coefficient (682 μV K−1) combined with low electrical resistivity (5.6 × 10−4 Ω m) and thermal conductivity (0.57 W m−1 K−1) at 523 K produces a reasonably high figure of merit ZT of 0.76.
- Subjects :
- Materials science
Analytical chemistry
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Thermal conductivity
Chemistry (miscellaneous)
Electrical resistivity and conductivity
Seebeck coefficient
Phase (matter)
Thermoelectric effect
Figure of merit
General Materials Science
Orthorhombic crystal system
Crystallite
0210 nano-technology
Subjects
Details
- ISSN :
- 26335409
- Volume :
- 1
- Database :
- OpenAIRE
- Journal :
- Materials Advances
- Accession number :
- edsair.doi.dedup.....2a0370033fec972c7ca7ee697080a48d