Abstract
n-Bi2Te2.7Se0.3〈I〉 single crystals additionally doped with indium (0.1–2.0 mol % In2Te3) have been grown by Czochralski pulling through a floating crucible. As the In2Te3 content of the growth charge increases to 0.2 mol %, the thermoelectric figure of merit (Z) of the crystals increases from 0.0029 to 0.0031 K−1 and Z max shifts to higher temperatures by ∼30 K. Increasing the In2Te3 content to 2 mol % sharply reduces Z max to 0.002 K−1 and shifts the maximum to lower temperatures. This behavior of the thermoelectric figure of merit can be understood in terms of the nonmonotonic variation of electron mobility with indium and iodine concentrations in the crystals.
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References
Gol’tsman, B.M., Kudinov, V.A., and Smirnov, I.A., Poluprovodnikovye termoelektricheskie materialy na osnove Bi 2 Te 3(Bi2Te3-Based Thermoelectric Semiconductor Materials), Moscow: Nauka, 1972.
Vaining, K., Limited Possibilities of Thermoelectricity under Climate Crisis Conditions, Termoelektrichestvo, 2008, no. 4, pp. 7–20.
Korzhuev, M.A., Symmetry Analysis of Thermoelectric Energy Converters with Inhomogeneous Legs, J. Electron. Mater., 2010, vol. 39, no. 9, pp. 1381–1385.
Svechnikova, T.E., Maksimova, N.M., and Konstantinov, P.P., Bi2S3 Doping of Single Crystals of Bi2Te3-Based Solid Solutions, Inorg. Mater., 1998, vol. 34, no. 3, pp. 233–235.
Svechnikova, T.E., Konstantinov, P.P., and Alekseeva, G.T., Physical Properties of Bi2Te2.85Se0.15 Single Crystals Doped with Cu, Cd, In, Ge, S, or Se, Inorg. Mater., 2000, vol. 36, no. 6, pp. 556–560.
Kutasov, V.A., Lukyanova, L.N., and Vedernikov, M.B., Shifting the Maximum Figure of Merit of (Bi,Sb)2(Te,Se)3 Thermoelectrics to Lower Temperatures, Thermoelectric Handbook: Macro to Nano, Rowe, D.M., Ed., London: Tailor & Francis, 2006, pp. 37-1–37-15.
Fiziko-khimicheskie svoistva poluprovodnikovykh veshchestv: Spravochnik (Physicochemical Properties of Semiconductors: A Handbook), Novoselova, A.V., Ed., Moscow: Nauka, 1979.
Bokii, G.B., Vvedenie v kristallokhimiyu (Introduction to Crystal Chemistry), Moscow: Mosk. Gos. Univ., 1954.
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Original Russian Text © T.E. Svechnikova, I.Yu. Nikhezina, M.A. Korzhuev, 2011, published in Neorganicheskie Materialy, 2011, Vol. 47, No. 12, pp. 1442–1446.
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Svechnikova, T.E., Nikhezina, I.Y. & Korzhuev, M.A. Thermoelectric properties of n-Bi2Te2.7Se0.3〈I,In〉 crystals. Inorg Mater 47, 1314–1318 (2011). https://doi.org/10.1134/S002016851112017X
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DOI: https://doi.org/10.1134/S002016851112017X