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Correction published on 21 September 2015, see Materials 2015, 8(9), 6482-6483.

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Materials 2015, 8(3), 1124-1149; doi:10.3390/ma8031124

Hierarchical Architecturing for Layered Thermoelectric Sulfides and Chalcogenides

Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
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Author to whom correspondence should be addressed.
Academic Editor: Kunihito Koumoto
Received: 4 February 2015 / Revised: 25 February 2015 / Accepted: 26 February 2015 / Published: 16 March 2015
(This article belongs to the Special Issue Low-Dimensional Anisotropic Thermoelectrics)
View Full-Text   |   Download PDF [3337 KB, uploaded 16 March 2015]   |  

Abstract

Sulfides are promising candidates for environment-friendly and cost-effective thermoelectric materials. In this article, we review the recent progress in all-length-scale hierarchical architecturing for sulfides and chalcogenides, highlighting the key strategies used to enhance their thermoelectric performance. We primarily focus on TiS2-based layered sulfides, misfit layered sulfides, homologous chalcogenides, accordion-like layered Sn chalcogenides, and thermoelectric minerals. CS2 sulfurization is an appropriate method for preparing sulfide thermoelectric materials. At the atomic scale, the intercalation of guest atoms/layers into host crystal layers, crystal-structural evolution enabled by the homologous series, and low-energy atomic vibration effectively scatter phonons, resulting in a reduced lattice thermal conductivity. At the nanoscale, stacking faults further reduce the lattice thermal conductivity. At the microscale, the highly oriented microtexture allows high carrier mobility in the in-plane direction, leading to a high thermoelectric power factor. View Full-Text
Keywords: thermoelectrics; CS2 sulfurization; thermoelectric sulfides; misfit layered chalcogenides; homologous chalcogenides; accordion-like layered chalcogenides; thermoelectric minerals; intercalation; crystal-structural evolution; low-energy atomic vibration; stacking fault; oriented texture thermoelectrics; CS2 sulfurization; thermoelectric sulfides; misfit layered chalcogenides; homologous chalcogenides; accordion-like layered chalcogenides; thermoelectric minerals; intercalation; crystal-structural evolution; low-energy atomic vibration; stacking fault; oriented texture
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Jood, P.; Ohta, M. Hierarchical Architecturing for Layered Thermoelectric Sulfides and Chalcogenides. Materials 2015, 8, 1124-1149.

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