A. V. Shevelkov, E. A. Kelm, A. V. Olenev, V. A. Kul'bachinskii, V. G. Kytin, “Anomalously low thermal conductivity and thermoelectric properties of new cationic clathrates in the Sn–In–As–I system”, Fizika i Tekhnika Poluprovodnikov, 2011, Volume 45, Issue 11,Pages <nobr>1454

This article is cited in 9 papers

Electronic properties of semiconductors

Anomalously low thermal conductivity and thermoelectric properties of new cationic clathrates in the Sn–In–As–I system

A. V. Shevelkov^a, E. A. Kelm^a, A. V. Olenev^a, V. A. Kul'bachinskii^b, V. G. Kytin^b

^a Lomonosov Moscow State University, Faculty of Chemistry
^b Lomonosov Moscow State University, Faculty of Physics

Abstract: Single-crystal samples of cationic clathrates in the Sn–In–As–I system with different indium contents have been synthesized. Their crystal structure has been analyzed and their thermoelectric properties have been measured. These compounds are found to be $n$-type semiconductors with high absolute values of the Seebeck coefficient ($S$ = 400–600 $\mu$V/K) and anomalously low thermal conductivity ($\kappa\le$ 0.4 W/(m/K) at 300 K, which is characteristic of amorphous materials. The reasons for the anomalously low thermal conductivity of these semiconductors are discussed and ways for optimizing their thermoelectric properties are shown.

Received: 12.04.2011
Accepted: 18.04.2011