Current Status in Fabrication, Structural and Transport Property Characterization, and Theoretical Understanding of Bi2Te3 / Sb2Te3 Superlattice Systems

Roughly a decade ago an outstanding thermoelectric Figure of merit ZT of 2.4 was published for nanostructured Bi2Te3/Sb2Te3‐based thin film superlattice (SL) structures. The results strongly fueled and renewed the interest in the development of efficient novel nanostructured thermoelectric materials...

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Bibliographic Details
Published in:Zeitschrift für anorganische und allgemeine Chemie (1950) 2012-12, Vol.638 (15), p.2441-2454
Main Authors: Winkler, Markus, Liu, Xi, Schürmann, Ulrich, König, Jan D., Kienle, Lorenz, Bensch, Wolfgang, Böttner, Harald
Format: Article
Language:English
Subjects:
Antimony
Bi2Te3
Bismuth
Sb2Te3
Superlattice
Tellurium
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Summary:Roughly a decade ago an outstanding thermoelectric Figure of merit ZT of 2.4 was published for nanostructured Bi2Te3/Sb2Te3‐based thin film superlattice (SL) structures. The results strongly fueled and renewed the interest in the development of efficient novel nanostructured thermoelectric materials. Several attempts were made to reproduce and improve the properties by using different methods, for example by replacing the cost‐intensive metal organic chemical vapor deposition (MOCVD) used to deposit the superlattices. This method‐oriented article shall give a critical overview over the most recent advances concerning growth, structural and electrical characterization, and theoretical understanding of Bi2Te3/Sb2Te3 SL systems. Previously reported data as well as new results from our groups are presented. Selected additional results from closely related Bi2Te3‐ and Sb2Te3‐based nanolayered systems are also presented to enhance the discussion.
ISSN:0044-2313
1521-3749
DOI:10.1002/zaac.201200305