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Enhancement of the thermoelectric figure-of-merit in nanowire superlattices

Published online by Cambridge University Press:  23 March 2015

Chumin Wang ,
J. Eduardo González  and
Vicenta Sánchez
Chumin Wang
Affiliation:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, D.F., México
J. Eduardo González
Affiliation:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, D.F., México
Vicenta Sánchez
Affiliation:
Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, D.F., México
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Abstract

Based on the Kubo-Greenwood formula, the thermoelectric effects in periodically and quasiperiodically segmented nanowires are studied by means of a real-space renormalization plus convolution method, where the electrical and lattice thermal conductivities are respectively calculated by using the tight-binding and Born models; the latter includes central and non-central interactions between nearest-neighbor atoms. The results show a significant enhancement of the thermoelectric figure-of-merit (ZT) induced by the structural disorder and/or the reduction of nanowire cross-section area. In addition, we observe a maximum ZT in both the chemical-potential and temperature spaces.

Keywords

thermoelectricitynanostructurequasicrystal
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1735: Symposium S/W/CC – Advanced Materials for Photovoltaic, Fuel Cell and Electrolyzer, and Thermoelectric Energy Conversion , 2015 , mrsf14-1735-cc14-39
Copyright
Copyright © Materials Research Society 2015 

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References

REFERENCES

Tian, Y., Sakr, M. R., Kinder, J. M., Liang, D., MacDonald, M. J., Qiu, R. L. J., Gao, H.-J., and Gao, X. P. A., Nano Lett. 12, 6492 (2012).CrossRefGoogle Scholar
Andrews, S. C., Fardy, M. A., Moore, M. C., Aloni, S., Zhang, M., Radmilovic, V., and Yang, P., Chem. Sci. 2, 706 (2011).CrossRefGoogle Scholar
Fang, H., Feng, T., Yang, H., Ruan, X., and Wu, Y., Nano Lett. 13, 2058 (2013).CrossRefGoogle Scholar
Elliott, R. J., Krumhansl, J. A., and Leath, P. L., Rev. Mod. Phys. 46, 465 (1974).CrossRefGoogle Scholar
Sánchez, V. and Wang, C., Phys. Rev. B 70, 144207 (2004).CrossRefGoogle Scholar
Tritt, T. M. (Ed.), Thermal Conductivity - Theory, Properties and Applications (Kluwer Academic-Plunum Pub., New York, 2004) pp. 3.CrossRefGoogle Scholar
Markussen, T., Nano Lett. 12, 4698 (2012).CrossRefGoogle Scholar
Economou, E. N., Green’s Functions in Quantum Physics, 3rd Ed. (Springer-Verlag, Berlin, 2006) pp. 6–7 and 80.CrossRefGoogle Scholar
Flicker, J. K. and Leath, P. L., Phys. Rev. B 7, 2296 (1973).CrossRefGoogle Scholar
Alfaro, P., Cisneros, R., Bizarro, M., Cruz-Irisson, M., and Wang, C., Nanoscale 3, 1246 (2011).CrossRefGoogle Scholar
Snyder, G. J. and Toberer, E. S., Nature Materials 7, 105 (2008).CrossRefGoogle Scholar
Hicks, L. D. and Dresselhaus, M. S., Phys. Rev. B 47, 16631 (1993).CrossRefGoogle Scholar