Abstract—
We have worked out conditions for the preparation of microcrystalline n-type lead telluride-based materials doped with lead iodide and investigated their microstructure and thermoelectric properties. The materials were prepared by hot-pressing powders produced by grinding an ingot to a particle size on the order of hundreds of microns in a planetary mill and to a particle size under hundreds of nanometers (mechanical activation) and by melt spinning. Fracture surfaces of the hot-pressed samples were examined on an optical and a scanning electron microscope. All of the samples had a nonuniform microstructure, with both small and larger grains present. In the samples prepared from the powders produced by mechanical activation, nanograins were detected. We have measured the Seebeck coefficient, electrical conductivity, and thermal conductivity of the samples at room temperature and in the range 300–800 K and evaluated their lattice thermal conductivity and thermoelectric figure of merit, ZT. Their lattice thermal conductivity was shown to decrease with decreasing grain size. The highest thermoelectric figure of merit, (ZT)max = 1.32 at 630 K, was offered by the materials produced from the mechanically activated powder.
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REFERENCES
Ravich, Yu.N., Efimova, B.A., and Smirnov, I.A., Metody issledovaniya poluprovodnikov v primenenii k khal’kogenidam svintsa PbTe, PbSe, PbS (Semiconductor Characterization Techniques with Application to the Lead Chalcogenides PbTe, PbSe, and PbS), Moscow: Nauka, 1968.
Dalven, R., A review of the semiconductor properties of PbTe, PbSe, PbS and PbO, Infrared Phys., 1969, no. 9, pp. 141–184.https://doi.org/10.1016/0020-0891(69)90022-0
Odin, I.N., Popovkin, B.A., and Novoseleva, A.V., A study of some sections in the ternary system Pb–Te–I, Izv. Akad. Nauk SSSR,Neorg. Mater., 1970, vol. 6, no. 3, pp. 482–485.
Grechko, N.I., Krivoruchko, S.P., Inglizyan, P.N., Sabo, E.P., and Sudak, N.M., Optimization of electron concentration in lead telluride, in Termoelektriki i ikh primenenie (Thermoelectrics and Their Applications), St. Petersburg, 2008, pp. 168–171.
Krivoruchko, S.P., Inglizyan, P.N., Grechko, N.I., and Sudak, N.M., Predicting temperature-dependent thermoelectric parameters of n-PbTe from room-temperature measurement results, in Termoelektriki i ikh primenenie (Thermoelectrics and Their Applications), St. Petersburg, 2008, pp. 176–181.
Gelbstein, Y., Dashevsky, Z., and Dariel, M.P., High performance n-type PbTe-based materials for thermoelectric applications, Phys. B (Amsterdam, Neth.), 2005, vol. 363, pp. 196–205.https://doi.org/10.1016/j.physb.2005.03.022
Poudel, B., Hao, Q., Ma, Y., Lan, X.Y., Minnich, A., Yu, B., Yan, X., Wang, D.Z., Muto, A., Vashaee, D., Chen, X.Y., Liu, J.M., Dresselhaus, M.S., Chen, G., and Ren, Z.F., High-thermoelectric performance of nanostructured bismuth antimony telluride bulk alloys, Science, 2008, vol. 320, no. 5876, pp. 634–638.https://doi.org/10.1126/science.1156446
Yoshino, J., Theoretical estimation of thermoelectric figure of merit in sintered materials and proposal of grain-size-graded structures, in Functionally Graded Materials, New York: Elsevier, 1997, pp. 495–500.https://doi.org/10.1016/B978-044482548-3/50081-0
Yoshino, J., Thermoelectric energy conversion, Theory and Application, Sakata, M., Ed., Tokyo: Shokabo, 2005, pp. 44–51.
Papageorgiou, C., Hatzikraniotis, E., Lioutas, C.B., Frangis, N., Valassiades, O., Paraskevopoulos, K.M., and Kyratsi, T., Thermoelectric properties of nanocrystalline PbTe synthesized by mechanical alloying, J. Electron. Mater., 2010, no. 39, pp. 1665–1668.https://doi.org/10.1007/s11664-010-1234-0
Bhandari, C. and Rowe, D., The effect of phonon-grain boundary scattering, doping and alloying on the lattice thermal conductivity of lead telluride, J. Phys. D: Appl. Phys., 1983, no. 16, pp. 75–77.https://doi.org/10.1088/0022-3727/16/4/003
Hanus, R., Agne, M.T., Rettie, A.J., Chen, Z., Tan, G., Chung, D.Y., Kanatzidis, M.G., Pei, Y., Voorhees, P.W., and Snyder, G.J., Lattice softening significantly reduces thermal conductivity and leads to high thermoelectric efficiency, Adv. Mater., 2019, no. 31 (21), paper 1900108.https://doi.org/10.1002/adma.201900108
Bhandari, C. and Rowe, D., High-temperature thermal transport in heavily doped small grain-size lead telluride, Appl. Phys. A, 1985, no. 37, pp. 175–178.https://doi.org/10.1007/BF00617503
Kishimoto, K. and Koyanagi, T., Preparation of sintered degenerate n-type PbTe with a small grain size and its thermoelectric properties, J. Appl. Phys., 2002, no. 92, pp. 2544–2549.https://doi.org/10.1063/1.1499206
Królicka, A., Materna, A., Piersa, M., and Mirowska, A., Impact of different conditions of technological process on thermoelectric properties of fine-grained PbTe, Acta Phys. Pol., A, 2016, no. 130, pp. 1255–1258. https://doi.org/10.12693/APhys Pol A.130.1255
Gol’tsman, B.M., Kudinov, V.A., and Smirnov, I.A., Poluprovodnikovye termoelektricheskie materialy na osnove Bi2Te3 (Bi2Te3-Based Thermoelectric Semiconductor Materials), Moscow: Nauka, 1972.
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This work was supported by AO NIITFA (agreement no. 38/5793-D, September 26, 2019) and the Russian Federation Ministry of Science and Higher Education (state research target no. 075-00746-19-00).
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Ivanova, L.D., Granatkina, Y.V., Mal’chev, A.G. et al. Preparation and Thermoelectric Properties of Microcrystalline Lead Telluride. Inorg Mater 56, 791–798 (2020). https://doi.org/10.1134/S0020168520080063
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DOI: https://doi.org/10.1134/S0020168520080063