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Issue 11, 2016
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Lead-free tin chalcogenide thermoelectric materials

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Thermoelectric materials can be used to directly and reversibly convert waste heat into electrical power and have attracted significant attention. Lead-free tin chalcogenide (SnTe, SnSe, SnS) thermoelectric materials are regarded as promising thermoelectric materials due to the great progress in the thermoelectric research field during the past several years. Analogous to PbTe, SnTe has a simple high symmetry NaCl-type cubic structure and a complex band structure, leading to its capability of achieving high thermoelectric performance by band structure and microstructure engineering. SnSe/SnS are simple compounds but exhibit an intrinsically ultralow thermal conductivity, suggesting that a high thermoelectric performance can be realized also in simple layered, anisotropic and anharmonic systems, without nanostructuring. This short perspective summarizes some current strategies that could enhance the thermoelectric performance of bulk lead-free tin chalcogenides, such as band structure engineering, nanostructuring, and synergistically improved approaches. Future possible strategies for further enhancing the thermoelectric performance of tin chalcogenides are also considered at the end of this perspective.

Graphical abstract: Lead-free tin chalcogenide thermoelectric materials

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Publication details

The article was received on 20 Jul 2016, accepted on 10 Sep 2016 and first published on 10 Sep 2016

Article type: Research Article
DOI: 10.1039/C6QI00263C
Citation: Inorg. Chem. Front., 2016,3, 1449-1463
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    Lead-free tin chalcogenide thermoelectric materials

    M. Zhou, G. J. Snyder, L. Li and L. Zhao, Inorg. Chem. Front., 2016, 3, 1449
    DOI: 10.1039/C6QI00263C

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