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Thermoelectric and Structural Properties of Bi1-xTe1+x Thin Films on CdTe(111)

  • Yunki Kim (a1), Sunglae Cho (a1), Antonio DiVenere (a1), George K. Wong (a1), Jerry R. Meyer (a2) and John B. Ketterson (a1)...


Thin films of the hexagonal phase of Bi1-xTe1+x have been grown on CdTe(111) substrates using molecular beam epitaxy (MBE). Analysis of X-ray diffraction patterns (θ-2θ scans and rocking curves) of the films shows that their crystallinity depends upon the compositional deviation from stoichiometric BiTe. Measurements of the temperature-dependent thermoelectric power (TEP) of the films reveals that compositional changes cause the TEP to vary from electron dominant (n-type) to hole dominant (p-type), implying their possible application as a thermoelectric cooler or power generator. Measurements of the temperature-dependent resistivity of the films were conducted, and the analysis shows semimetallic behavior. These results demonstrate that Bi1-xTe1+xis an appropriate model system to study the dependencies of thermoelectric and structural properties on binary composition.



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1. Stasova, M. M., Zh. Struct. Khim 8, 655 (1967) [transl. J. Struct. Chem. 8, 584 (1967)]; M. M. Stasova, Zh. Struct. Khim 5, 793 (1964) [transl. J. Struct. Chem. 5, 731 (1964)]; M. M. Stasova, and O. G. Karpinskii, Zh. Struct. Khim 8, 85 (1967) [transl. J. Struct. Chem. 8, 69 (1967)].
2. Imamov, P. M., and Semiletov, S. A., Kristallogr. 15, 972 (1971) [transl. Soviet Phys. Crystallogr. 15, 845 (1971)].
3. Shimazaki, Hidehiko, and Ozawa, Tohru, Am. Mineralogist 63, 1162 (1978).
4. Ibrahim, M. M., Afify, N., Hafiz, M. M., and Mahmoud, M. A., J. Phys. Chem. Solids 51, 253 (1990).
5. McCulley, M. J., Neudeck, G. W., and Liedl, G. L., J. Vac. Sci. Technol. 10, 391 (1973).
6. Brown, Allan, and Lewis, B., J. Phys. Chem. Solids 23, 1597 (1962).
7. Miller, G. R., and Li, Che-Yu, J. Phys. Chem. Solids 26, 173 (1965).
8. Miller, E., Komarek, K., and Cadoff, I., Trans. AIME 215, 884 (1959).


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