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 may. 2020
Accepted
08 jun. 2020
First published
12 jun. 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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