Skip to main content Accessibility help
×
Home

A Novel Approach to Synthesize Lanthanum Telluride Thermoelectric Thin Films in Ambient Conditions

  • Su (Ike) Chih Chi (a1), Stephen L. Farias (a1) and Robert C. Cammarata (a1) (a2)

Abstract

Rare-earth telluride compounds are characterized by their high performance thermoelectric properties that have been applied to the development of functional materials [1]. Recently, May and co-workers reported that nanostructured bulk lanthanum telluride (La3-xTe4, 0 ≤ x ≤ 1/3) by mechanical ball-milling exceeded the figure of merit (ZT) of 1 at high temperatures near 1300K [2-3]. Since the increased thermoelectric efficiency of nanostructured materials is due to the enhancement of phonon scattering introduced by quantum confinement, thin films have also generated significant scientific and technological interest [4-6]. Here, we report on the electrodepostion of lanthanum telluride and lanthanum thin films in ionic liquids in ambient conditions. Surface morphologies varied from needle-like to granular structures and depend on deposition conditions. This novel electrochemical synthesis approach is a simple, inexpensive and laboratory-environment friendly method of synthesizing nanostructured thermoelectric materials.

Copyright

References

Hide All
1. Rowe, D. M., CRC Handbook of Thermoelectrics, CRC Press (1995).
2. May, A., Fleurial, J-P. and Snyder, G. J., Phys. Rev. B 78, 125205 (2008).
3. Delaire, O., May, A. F., McGuire, M. A., Porter, W. D., Lucas, M. S., Stone, M. B., Abernathy, D. L., Ravi, V. A., Firdosy, S. A., Snyder, G. J., Phys. Rev. B 80, 184302 (2009).
4. Hicks, L. D. and Dresselhaus, M. S., Phys. Rev. B 47, 12727 (1993).
5. Hicks, L. D. and Dresselhaus, M. S., Phys. Rev. B 47, 16631 (1993).
6. Dresselhaus, M., Chen, G., Tang, M. Y., Yang, R. G., Lee, H., Wang, D. Z., Ren, Z. F., Fleurial, J. P., and Gogna, P., Adv. Mater. 19, 10431053 (2007).
7. Samal, A. K and Pradeep, T., J. Phys. Chem. C. 114, 58715878 (2010).
8. Kopera, John J. C., “Inside the Nickel Metal Hydride Battery, ” Cobasys (2004).
9. Gorman, S., “As hybrid cars gobble rare metals, shortage looms, ” Ruters.com, Aug 31, 2009.
10. Bäuerlein, P. et al. ., J. of Power Sources. 176, 547554 (2008).
12. Bagde, G. D., Sartale, S. D., and Lokhande, C. D., Mater. Chem. and Phys. 89, 402405 (2005).
13. Ramsey, T. H., Steinfink, H., and Weiss, E. J., J. Appl. Phys. 34, 2917 (1963).
14. Fleurial, J.-P., Borshchevsky, A., Ryan, M. A., Phillips, W., Kolawa, E., Kacisch, T., Ewell, R., Proceedings of XVI International Conference on Thermoelectrics, Dresden, Germany, p. 641–645, 1997: IEEE
15. Legeai, S., Diliberto, S., Stein, N., Boulanger, C., Estager, J., Papaiconomou, N., and Draye, M., Elec. Comm. 10, 16611664 (2008).

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed