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Theoretical and experimental advances in Bi2Te3 / Sb2Te3 - based and related superlattice systems

 
: Winkler, M.; Liu, X.; Schürmann, U.; König, J.D.; Kienle, L.; Böttner, H.

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MRS online proceedings library. Online resource 1490 (2013)
http://www.mrs.org/opl/
ISSN: 1946-4274
Materials Research Society (Fall Meeting) <2012, Boston/Mass.>
English
Conference Paper
Fraunhofer IPM ()
thermoelectricity; nanostructure; thin film

Abstract
Roughly a decade ago an outstanding thermoelectric figure of merit ZT of 2.4 was reported for nanostructured Bi2Te3/Sb2Te3-based thin film superlattice (SL) structures. The published results strongly fueled and renewed the interest in the development of efficient novel nanostructured thermoelectric materials. This review article shall give an overview over the most recent theoretical and experimental advances on Bi2Te3/Sb2Te3 SLs and related superlattice systems. The presented theoretical models are subdivided into electronic and phononic aspects. The experimental results are summarized with regard to the method used. A more detailed elaboration on structural and transport properties is given in the subsequent sections.

: http://publica.fraunhofer.de/documents/N-241399.html