Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-05T19:48:43.194Z Has data issue: false hasContentIssue false

Finite Element Simulations on Scaling Effects of 3D SiGe Thermoelectric Generators

Published online by Cambridge University Press:  25 April 2012

Nicholas Williams
Affiliation:
Electrical and Computer Engineering, University of Connecticut, 371 Fairfield Way, Storrs, CT 06269, USA
Ali Gokirmak
Affiliation:
Electrical and Computer Engineering, University of Connecticut, 371 Fairfield Way, Storrs, CT 06269, USA
Helena Silva
Affiliation:
Electrical and Computer Engineering, University of Connecticut, 371 Fairfield Way, Storrs, CT 06269, USA
Get access

Abstract

We report 3D finite element simulations analyzing scaling effects on the performance of single Silicon Germanium thermoelectric generator with 170 μm tall metal contacts. Temperature dependent material parameters are included to accurately model device performance. Power density was extracted for a range of widths, heights, and operating temperature. Depending upon cross sectional area of the SiGe leg and operating temperature, height can be optimized for maximum power density.

Type
Research Article
Copyright
Copyright © Materials Research Society 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] Rowe, D. M., Thermoelectrics Handbook: Macro to Nano. DRC, 2006.Google Scholar
[2] Vashaee, D. and Shakouri, A., “Improved thermoelectric power factor in metal-based superlattices,” Phys. Rev. Lett., vol. 92, pp. 106103, 2004.Google Scholar
[3] Dresselhaus, M. S., Chen, G., Tang, M. Y., Yang, R. G., Lee, H., Wang, D. Z., Ren, Z. F., Fleurial, J.-P., Gogna, P., “New Directions for Low-Dimensional Thermoelectric Materials,” Adv Mater, vol. 19, pp. 10431053, 2007.Google Scholar
[4] Dames, C. and Chen, G., “Thermal conductivity of nanostructured thermoelectric materials,” in Thermoelectrics Handbook Macro to Nano Rowe, D. M., Ed. CRC, 2006, pp. 421426.Google Scholar
[5] Huxtable, S. T., Abramson, A. R., Tien, C. L., Majumdar, A., LaBounty, C., Fan, X., Zeng, G., Bowers, J. E., Shakouri, A. and Croke, E. T., “Thermal conductivity of Si/SiGe and SiGe/SiGe superlattices,” Appl. Phys. Lett., vol. 80, pp. 1737, 2002.Google Scholar
[6] Poudel, B., Hao, Q., Ma, Y., Lan, Y., Minnich, A., Yu, B., Yan, X., Wang, D., Muto, A. and Vashaee, D., “High-thermoelectric performance of nanostructured bismuth antimony telluride bulk alloys,” Science, vol. 320, pp. 634, 2008.Google Scholar
[7] Kyratsi, T., Hatzikraniotis, E., Ioannou, M., Chung, D. and Tsiaoussis, I., “Seebeck and thermal conductivity analysis in amorphous/crystalline β-K2Bi8Se13 nanocomposite materials,” J. Appl. Phys., vol. 110, pp. 033713, 2011.Google Scholar
[8] Thacher, E., Helenbrook, B., Karri, M. and Richter, C. J., “Testing of an automobile exhaust thermoelectric generator in a light truck,” Proc. Inst. Mech. Eng. Pt. D: J. Automobile Eng., vol. 221, pp. 95107, 2007.Google Scholar
[9] Fairbanks, J., “Thermoelectric applications in vehicles status 2008,” US Department of Energy, Google Scholar
[10] Rowe, D. M.. Thermoelectric power for automobiles arrives in europe. ITS Google Scholar
[11] LaGrandeur, J., Crane, D. and Eder, A., “Vehicle fuel economy improvement through thermoelectric waste heat recovery,” in Diesel Engine Emissions Reduction Conference, 2005, pp. 17.Google Scholar
[12] Sentaurus, T., “Synopsys,” Inc., Z-2007.03 Edition , 2007.Google Scholar
[13] Snyder, G. J. and Toberer, E. S., “Complex thermoelectric materials,” Nature Materials, vol. 7, pp. 105114, 2008.Google Scholar
[14] Wachutka, G. K., “Rigorous thermodynamic treatment of heat generation and conductionin semiconductor device modeling,” Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on, vol. 9, pp. 11411149, 1990.Google Scholar
[15] Shi, L., Yao, D., Zhang, G. and Li, B., “Large thermoelectric figure of merit in SiGe nanowires,” Appl. Phys. Lett., vol. 96, pp. 173108, 2010.Google Scholar
[16] Li, D., Wu, Y., Philip, K., Shi, L., Yang, P. and Majumdar, A., “Thermal conductivity of individual silicon nanowires,” Appl. Phys. Lett., vol. 83, pp. 2934, 10/06. 2003.Google Scholar