Journal
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
Volume 14, Issue 4, Pages 226-235Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.cocis.2009.05.001
Keywords
Thermoelectric materials; Interfaces; Grain boundaries; Crystallographic texture; Nanostructures
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Funding
- US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences
- Sandia LDRD Office
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We review current progress in the understanding of interfaces in bulk thermoelectric materials. Following a brief discussion of the mechanisms by which embedded interfaces can enhance the electronic and thermal transport properties, we focus on emerging routes to engineer the nanoscale grain and interfacial structures in bulk thermoelectric materials. We address in particular (i) control of crystallographic texture, (ii) reduction of grain size to nanocrystalline dimensions, and (iii) formation of nanocomposite structures. While these approaches are beginning to yield promising improvements in performance, continued progress will require an improved fundamental understanding of the mechanisms governing the formation, stability, and properties of thermoelectric interfaces. (C) 2009 Elsevier Ltd. All rights reserved.
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