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Effects of Nb doping on thermoelectric properties of Zn4Sb3 at high temperatures

Published online by Cambridge University Press:  31 January 2011

D. Li ,
H.H. Hng ,
J. Ma  and
X.Y. Qin
J. Ma
Affiliation:
School of Materials Science & Engineering, Nanyang Technological University, Singapore 639798, Singapore
X.Y. Qin
Affiliation:
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, 230031 Hefei, People's Republic of China
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Abstract

The thermoelectric properties of Nb-doped Zn4Sb3 compounds, (Zn1–xNbx)4Sb3 (x = 0, 0.005, and 0.01), were investigated at temperatures ranging from 300 to 685 K. The results showed that by substituting Zn with Nb, the thermal conductivities of all the Nb-doped compounds were lower than that of the pristine β-Zn4Sb3. Among the compounds studied, the lightly substituted (Zn0.995Nb0.005)4Sb3 compound exhibited the best thermoelectric performance due to the improvement in both its electrical resistivity and thermal conductivity. Its figure of merit, ZT, was greater than the undoped Zn4Sb3 compound for the temperature range investigated. In particular, the ZT of (Zn0.995Nb0.005)4Sb3 reached a value of 1.1 at 680 K, which was 69% greater than that of the undoped Zn4Sb3 obtained in this study.

Keywords

AlloyElectrical propertiesThermoelectric
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 2 , February 2009 , pp. 430 - 435
Copyright
Copyright © Materials Research Society 2009

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References

REFERENCES

1.Mayer, H.W., Mikhail, I., Schubert, K.: Super matching phase of the mixture ZnSbN and CdSbN. J. Less Common Met. 59, 43 (1978)CrossRefGoogle Scholar
2.Tapiero, M., Tarabichi, S., Gies, J.G., Noguet, C., Zielinger, J.P., Joucla, M., Loison, J., Robino, M.: Preparation and characterization of Zn4Sb3 Sol. Energy Mater. 12, 257 (1985)Google Scholar
3.Caillat, T., Fleurial, J.P., Borshchevsky, A.: Preparation and thermoelectric properties of semiconducting Zn4Sb3. J. Phys. Chem. Solids 58, 1119 (1997)CrossRefGoogle Scholar
4.Snyder, G.J., Christensen, M., Nishibori, E., Caillat, T., Iversen, B.B.: Disordered zinc in Zn4Sb3 with phonon-glass and electron-crystal thermoelectric properties. Nat. Mater. 3, 458 (2004)CrossRefGoogle ScholarPubMed
5.Liu, F., Qin, X.Y., Xin, H.X.: Thermoelectric properties of (Zn0.98M0.02)4Sb3 (M = Al, Ga and In) at low temperatures. J. Phys. D: Appl. Phys. 40, 7811 (2007)CrossRefGoogle Scholar
6.Nakamoto, G., Souma, T., Yamaba, M., Kurisu, M.: Thermoelectric properties of (Zn1−xCdx)4Sb3 below room temperature. J. Alloys Compd. 377, 59 (2004)CrossRefGoogle Scholar
7.Kuznetsov, V.L., Rowe, D.M.: Solid solution formation in the Zn4Sb3–Cd4Sb3 system. J. Alloys Compd. 372, 103 (2004)CrossRefGoogle Scholar
8.Caillat, T., Fieurial, J.P.: Zn–Sb alloys for thermoelectric power generation, in Proceedings of the 31st Intersociety Energy Conversion Engineering Conference(Cat. No. 96CH35978) 2, 905 (1996)Google Scholar
9.Ueno, K., Yamamoto, A., Noguchi, T., Inoue, T., Sodeoka, S., Takazawa, H., Lee, C.H., Obara, H.: Optimization of hot-press conditions of Zn4Sb3 for high thermoelectric performance: I. Physical properties and thermoelectric performance. J. Alloys Compd. 384, 254 (2004)CrossRefGoogle Scholar
10.Souma, T., Nakamoto, G., Kurisu, M.: Low-temperature thermoelectric properties of α- and β-Zn4Sb3 bulk crystals prepared by a gradient freeze method and a spark plasma sintering method. J. Alloys Compd. 340, 275 (2002)CrossRefGoogle Scholar
11.Zhang, L.T., Tsutsui, M., Ito, K., Yamaguchi, M.: Effects of ZnSb and Zn inclusions on the thermoelectric properties of β-Zn4Sb3. J. Alloys Compd. 358, 252 (2003)CrossRefGoogle Scholar
12.Liu, F., Qin, X.Y., Li, D.: The effect of In doping on thermoelectric properties and phase transition of Zn4Sb3 at low temperatures. J. Phys. D: Appl. Phys. 40, 4974 (2007)CrossRefGoogle Scholar
13.Bhattacharya, S., Hermann, R.P., Keppens, V.: Effect of disorder on the thermal transport and elastic properties in thermoelectric Zn4Sb3. Phys. Rev. B 74, 134108 (2006)CrossRefGoogle Scholar
14.Tsutsui, M., Zhang, L.T., Ito, K., Yamaguchi, M.: Effects of in-doping on the thermoelectric properties of β-Zn4Sb3. Intermetallics 12, 809 (2004)CrossRefGoogle Scholar
15.Chitroub, M., Besse, F., Scherrer, H.: Thermoelectric properties of semi-conducting compound Zn4Sb3. J. Alloys Compd. 460, 90 (2008)CrossRefGoogle Scholar