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Anomalous increase of the thermopower and thermoelectric figure of merit in Ga-doped p-(Bi0.5Sb0.5)2Te3 single crystals

  • Semiconductors and Dielectrics
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Abstract

The effect of Ga doping on the temperature dependences (5 K ≤ T ≤ 300 K) of the Seebeck coefficient α, electrical conductivity σ, thermal conductivity coefficient κ, and thermoelectric figure of merit Z of p-(Bi0.5Sb0.5)2Te3 single crystals has been investigated. It has been shown that, upon Ga doping, the hole concentration decreases, the Seebeck coefficient increases, the electrical conductivity decreases, and the thermoelectric figure of merit increases. The observed variations in the Seebeck coefficient cannot be completely explained by the decrease in the hole concentration and indicate a noticeable variation in the density of states due to the Ga doping.

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References

  1. B. M. Gol’tsman, V. A. Kudinov, and I. A. Smirnov, Semiconductor Thermoelectric Materials Based on Bi 2 Te 3 (Nauka, Moscow, 1972) [in Russian].

    Google Scholar 

  2. V. A. Kutasov and L. N. Luk’yanova, Fiz. Tverd. Tela (St. Petersburg) 38(8), 2366 (1996) [Phys. Solid State 38 (8), 1302 (1996)].

    Google Scholar 

  3. P. Lostak, J. Navratil, J. Sramkova, and J. Horak, Phys. Status Solidi A 135, 519 (1993).

    Article  ADS  Google Scholar 

  4. P. Lostak, S. Karamazov, and J. Horak, Phys. Status Solidi A 143, 271 (1994).

    Article  ADS  Google Scholar 

  5. V. A. Kulbachinskii, Z. M. Dashevskii, M. Inoue, M. Sasaki, H. Negishi, W. X. Gao, P. Lostak, J. Horak, and A. de Visser, Phys. Rev. B: Condens. Matter 52, 10915 (1995).

    ADS  Google Scholar 

  6. S. A. Azou, V. A. Kul’bachinskiĭ, G. A. Mironova, and S. Ya. Skipidarov, Fiz. Tekh. Poluprovodn. (Leningrad) 24(2), 283 (1990) [Sov. Phys. Semicond. 24 (2), 173 (1990)].

    Google Scholar 

  7. N. B. Brandt and V. A. Kulbachinskii, Semicond. Sci. Technol. 7, 907 (1992).

    Article  ADS  Google Scholar 

  8. V. A. Kulbachinskii, N. B. Brandt, P. A. Cheremnykh, S. A. Azou, J. Horak, and P. Lostak, Phys. Status Solidi B 150, 237 (1988).

    Article  ADS  Google Scholar 

  9. V. A. Kul’bachinskiĭ, N. E. Klokova, S. Ya. Skipidarov, Ya. Gorak, P. Loshtyak, and S. A. Azou, Vestn. Mosk. Univ., Ser. 3: Fiz., Astron. 30, 68 (1989).

    Google Scholar 

  10. V. A. Kulbachinskii, A. Yu. Kaminskii, R. A. Lunin, K. Kindo, Y. Narumi, K. Suga, S. Kawasaki, M. Sasaki, N. Miyajima, P. Lostak, and P. Hajek, Semicond. Sci. Technol. 17, 1133 (2002).

    Article  ADS  Google Scholar 

  11. V. A. Kulbachinskii, A. Yu. Kaminsky, K. Kindo, K. Y. Narumi, K. Suga, S. Kawasaki, M. Sasaki, N. Miyajima, G. R. Wu, P. Lostak, and P. Hajek, Phys. Status Solidi B 229, 1467 (2002).

    Article  ADS  Google Scholar 

  12. V. A. Kulbachinskii, H. Negishi, M. Sasaki, Y. Giman, M. Inoue, P. Lostak, and J. Horak, Phys. Status Solidi B 199, 505 (1997).

    Article  ADS  Google Scholar 

  13. V. A. Kul’bachinskiĭ, N. E. Klokova, Ya. Gorak, P. Lo- shtyak, S. A. Azou, and G. A. Mironova, Fiz. Tverd. Tela (Leningrad) 31(1), 205 (1989) [Sov. Phys. Solid State 31 (1), 112 (1989)].

    Google Scholar 

  14. V. A. Kulbachinskii, M. Inoue, M. Sasaki, H. Negishi, W. X. Gao, K. Takase, Y. Giman, P. Lostak, and J. Horak, Phys. Rev. B: Condens. Matter 50, 16921 (1994).

    ADS  Google Scholar 

  15. J. P. Heremans, V. Jovovic, E. S. Toberer, A. Saramat, K. Kurosaki, A. Charoenphakdee, S. Yamanaka, and G. J. Snyder, Science (Washington) 321, 554 (2008).

    Article  ADS  Google Scholar 

  16. V. A. Kul’bachinskiĭ, P. M. Tarasov, and E. Brück, Zh. Éksp. Teor. Fiz. 128(3), 615 (2005) [JETP 101 (3), 528 (2005)].

    Google Scholar 

  17. V. A. Kulbachinskii, N. Miura, H. Nakagawa, C. Drashar, and P. Lostak, J. Phys. C: Solid State Phys. 11, 5273 (1999).

    Google Scholar 

  18. J. Navratil, P. Lostak, and J. Horak, Cryst. Res. Technol. 26, 675 (1991).

    Article  Google Scholar 

  19. A. I. Ansel’m, Introduction to Semiconductor Theory (Nauka, Moscow, 1978; Prentice-Hall, Englewood Cliffs, NJ, United States, 1981).

    Google Scholar 

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Authors and Affiliations

  1. Moscow State University, Moscow, 119991, Russia

    V. A. Kulbachinskii, V. G. Kytin, P. M. Tarasov & N. A. Yuzeeva

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  1. V. A. Kulbachinskii
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  2. V. G. Kytin
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  3. P. M. Tarasov
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  4. N. A. Yuzeeva
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Correspondence to V. A. Kulbachinskii.

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Original Russian Text © V.A. Kulbachinskii, V.G. Kytin, P.M. Tarasov, N.A. Yuzeeva, 2010, published in Fizika Tverdogo Tela, 2010, Vol. 52, No. 9, pp. 1707–1711.

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Kulbachinskii, V.A., Kytin, V.G., Tarasov, P.M. et al. Anomalous increase of the thermopower and thermoelectric figure of merit in Ga-doped p-(Bi0.5Sb0.5)2Te3 single crystals. Phys. Solid State 52, 1830–1835 (2010). https://doi.org/10.1134/S1063783410090076

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