hierarchical architecturing for layered thermoelectric sulfides and chalcogenides

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ID: 216417
2015
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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.
Reference Key
jood2015materialshierarchical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Priyanka Jood;Michihiro Ohta
Journal Nature Materials
Year 2015
DOI
10.3390/ma8031124
URL
http://www.mdpi.com/1996-1944/8/3/1124
Keywords
thermoelectrics intercalation electronics civil engineering (general)microscopydescriptive and experimental mechanics nuclear engineeringengineering (general)

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