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 μV/K) and anomalously low thermal conductivity (κ ≤ 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.
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Original Russian Text © A.V. Shevelkov, E.A. Kelm, A.V. Olenev, V.A. Kulbachinskii, V.G. Kytin, 2011, published in Fizika i Tekhnika Poluprovodnikov, 2011, Vol. 45, No. 11, pp. 1454–1458.
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Shevelkov, A.V., Kelm, E.A., Olenev, A.V. et al. Anomalously low thermal conductivity and thermoelectric properties of new cationic clathrates in the Sn-In-As-I system. Semiconductors 45, 1399–1403 (2011). https://doi.org/10.1134/S106378261111025X
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DOI: https://doi.org/10.1134/S106378261111025X