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Synthesis and Optical Properties of 1D Bismuth Nanorods

Published online by Cambridge University Press:  01 February 2011

Jason Reppert ,
Sivaram Krishnan ,
Jian He ,
Rahul Rao ,
Terry Tritt  and
Apparao Rao
Jason Reppert
Affiliation:
[email protected], Clemson University, Department of Physics and Astronomy, 118 Kinard Laboratory, Clemson University, Clemson, SC, 29634, United States
Sivaram Krishnan
Affiliation:
[email protected], Sri Sathya Sai University, Prasanthi Nilayam P.O., 515134, India
Jian He
Affiliation:
[email protected], Clemson University, Department of Physics and Astronomy, Clemson, SC, 29634, United States
Rahul Rao
Affiliation:
[email protected], Clemson University, Department of Physics and Astronomy, Clemson, SC, 29634, United States
Terry Tritt
Affiliation:
[email protected], Clemson University, Department of Physics and Astronomy, Clemson, SC, 29634, United States
Apparao Rao
Affiliation:
[email protected], Clemson University, Department of Physics and Astronomy, Center for Optical Materials Science and Engineering Technology, Clemson, SC, 29634, United States
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Abstract

The presence of a high electron density of states in low-dimensional systems such as, nanowires and nanotubes, suggests that these 1D structures can be useful thermoelectric materials. Theoretical calculations predict that: (i) Semimetallic Bi nanowires exhibit semiconducting nature when their nanowire diameter is below 50 nm, and (ii) Semiconducting Bi nanowires with diameter < 10 nm are expected to have an enhanced figure of merit (ZT > 2), when Z=S2σ/κ (S: Seebeck coefficient, σ: electrical conductivity, and κ is the thermal conductivity). We report the synthesis of ∼10 nm diameter Bi nanorods using a pulsed laser vaporization method. The high resolution transmission electron microscopy images of our Bi nanorods show (i) crystalline <012> planes in the core of the nanorods, and (ii) coated with a thin amorphous Bi2O3 layer. The infrared absorption and the surface plasmon peaks in our Bi nanorods are blue-shifted in energy when compared to the corresponding spectra in bulk Bi.

Keywords

Biinfrared (IR) spectroscopyablation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1044: Symposium U – Thermoelectric Power Generation , 2007 , 1044-U03-06
Copyright
Copyright © Materials Research Society 2008

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References

[1] Lin, Y.-M., Sun, X., and Dresselhaus, M. S., Phys. Rev. B 62, 4610 (2000).Google Scholar
[2] Dresselhaus, G. et al. , in International Conference on Thermoelectrics (IEEE, Piscataway, NJ, Nagoya, Japan, 1998), p. 43.Google Scholar
[3] Heremans, J. et al. , Phys. Rev. B 61, 2921 (2000).Google Scholar
[4] Black, M. R. et al. , Phys. Rev. B 65, 195417 (2002).Google Scholar
[5] Lin, Y.-M. et al. , Appl. Phys. Lett. 76, 3944 (2000).Google Scholar
[6] Black, M. R. et al. , Phys. Rev. B 68, 235417 (2003).Google Scholar
[7] Cornelius, T. W. et al. , Appl. Phys. Lett. 88, 103114 (2006).Google Scholar
[8] Wang, W. M. et al. , Appl. Phys. Lett. 88, 143106 (2006).Google Scholar
[9] Huber, T. E. et al. , Appl. Phys. Lett. 84, 1326 (2004).Google Scholar
[10] Reppert, J. et al. , Chem. Phys. Lett. 442, 334 (2007).Google Scholar
[11] Isaacson, R. T., and Williams, G. A., Phys. Rev. 185, 682 (1969).Google Scholar
[12] Schiferl, D., and Barrett, C. S., J. Appl. Crystallogr. 2, 30 (1969).Google Scholar
[13] Heremans, J., and Hansen, O. P., J. Phys. C 12, 3483 (1979).Google Scholar
[14] Wang, Y. M., Hong, B. Y., and Kim, K. S., J. Phys. Chem. B 109, 7067 (2005).Google Scholar