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Nanostructured clathrates and clathrate-based nanocomposites
R. Christian, M. Ikeda, G. Lientschnig +13
Intermetallic clathrates are candidate materials for thermoelectric applications above room temperature. Here we explore whether their intrinsically low lattice thermal conductivit…
Suppression of vacancies boosts thermoelectric performance in type-I clathrates
Xinlin Yan, Matthias Ikeda, Long Zhang +5
Intermetallic type-I clathrates continue to attract attention as promising thermoelectric materials. Here we present structural and thermoelectric properties of single crystalline…
Clathrate formation in the systems Sr-Cu-Ge and {Ba,Sr}-Cu-Ge
I. Zeiringer, A. Grytsiv, F. Kneidinger +5
In the ternary system Sr-Cu-Ge, a clathrate type-I phase, Sr8Cu5.3Ge40.7 (a = 1.06311(3), exists close to the Zintl limit in a small temperature interval. Sr8Cu5.3Ge40.7 decomposes…
New bulk p-type skutterudites DD0.7Fe2.7Co1.3Sb12-xXx (X = Ge, Sn) reaching ZT>1.3
G. Rogl, A. Grytsiv, P. Heinrich +7
The best p-type skutterudites so far are didymium filled, Fe/Co substituted, Sb-based skutterudites. Substitution at the Sb-sites influences the electronic structure, deforms the S…
Optimizing thermoelectric properties of filled MPtGeSb skutterudites by band engineering
M. X. Chen, R. Podloucky, S. Humer +2
On the basis of density functional theory (DFT) calculations thermoelectric properties are derived for Sb-doped skutterudites MPtGeSb with M=Ba,La,Th. It is predic…
Thermoelectric properties of Ba-Cu-Si clathrates
X. Yan, M. X. Chen, S. Laumann +4
Thermoelectric properties of the type-I clathrates BaCuSi (, = nominal Cu content) are investigated both experimentally and theoretically. T…