Issue 4, 2020

High thermoelectric performance of rapidly microwave-synthesized Sn1−δS

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.

Graphical abstract: High thermoelectric performance of rapidly microwave-synthesized Sn1−δS

Supplementary files

Article information

Article type
Paper
Submitted
12 5 2020
Accepted
08 6 2020
First published
12 6 2020
This article is Open Access
Creative Commons BY license

Mater. Adv., 2020,1, 845-853

High thermoelectric performance of rapidly microwave-synthesized Sn1−δS

J. Prado-Gonjal, J. Gainza, I. Aguayo, Ó. J. Durá, S. Rodríguez-Pérez, F. Serrano-Sánchez, N. M. Nemes, M. T. Fernández-Díaz, J. A. Alonso and E. Morán, Mater. Adv., 2020, 1, 845 DOI: 10.1039/D0MA00301H

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