The journey of tin chalcogenides towards high-performance thermoelectrics and topological materials

Chemical Communications : Chem Comm
Ananya BanikKanishka Biswas

Abstract

Lead chalcogenides and their alloys belong at the heart of thermoelectrics due to their large thermoelectric figure of merit (zT). However, recent research has shown a limitation in the use of lead (Pb)-based materials due to their toxicity and efforts have been made to produce non-toxic analogues of lead chalcogenides. Tin chalcogenides have been predicted to be promising for this purpose due to their unique electronic structure and phonon dispersion properties. Here, we discuss the journey of tin chalcogenides in the field of thermoelectrics and topological materials with the main emphasis on the bonding, crystal structures, electronic band structures, phonon dispersion and thermoelectric properties. The thermal transport properties of tin chalcogenides are explained based on lattice dynamics, where resonant bonding and local structural distortion play an important role in creating lattice anharmonicity, thereby lowering the lattice thermal conductivity. Since thermoelectric and topological materials, especially topological insulators and topological crystalline insulators, share similar material features, such as a narrow band gap, heavy constituent elements and significant spin-orbit coupling, we have discussed the thermoel...Continue Reading

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Citations

May 8, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal· DimpleAbir De Sarkar
Sep 19, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Anuraj S KshirsagarPawan K Khanna
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Apr 23, 2021·Chemical Communications : Chem Comm·Moinak DuttaKanishka Biswas
Mar 9, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Antik Sihi, Sudhir K Pandey
Jun 18, 2021·Chemical Society Reviews·Yun ZhengMercouri G Kanatzidis
Jul 3, 2019·ACS Applied Materials & Interfaces·Zhiyu ChenRan Ang
Sep 14, 2018·Journal of the American Chemical Society·Yu XiaoLi-Dong Zhao
Dec 9, 2021·Physical Chemistry Chemical Physics : PCCP·Shagun NagRanjan Kumar

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Methods Mentioned

BETA
X-ray
inelastic neutron scattering
electron diffraction

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