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Effect of Working Distance on Properties of Sputtered Molybdenum Films

Published online by Cambridge University Press:  20 June 2011

Shirish A. Pethe
Affiliation:
Florida Solar Energy Center, University of central Florida, 1679 Clearlake Road, Cocoa, FL 32922, U.S.A.
Ashwani Kaul
Affiliation:
Florida Solar Energy Center, University of central Florida, 1679 Clearlake Road, Cocoa, FL 32922, U.S.A.
Neelkanth G. Dhere
Affiliation:
Florida Solar Energy Center, University of central Florida, 1679 Clearlake Road, Cocoa, FL 32922, U.S.A.
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Abstract

Molybdenum back contact deposition is a bottleneck in high volume manufacturing due to the current state of art where multi layer molybdenum film needs to be deposited to achieve the required properties. In order to understand and solve this problem experiments were carried out. The effect of working distance (distance between the target and the substrate) on film properties was studied and is presented in this work. Earlier work carried out at Florida Solar Energy Center reflected on the effect of the sputtering power and working gas pressure on the film properties. This work is continuation of that effort in understanding effects of various sputtering parameters and determining the possible route to develop single layer molybdenum films with the required properties of near zero stress, low resistivity and good adhesion to substrate.

Type
Research Article
Copyright
Copyright © Materials Research Society 2011

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References

REFERENCES

1. Powalla, M., Solar thin film reaches 20.3% efficiency, 2010. ZSW (Center for Solar Energy and Hydrogen Research) Baden-Wurttemberg press release.Google Scholar
2. Green, M.A., Emery, K., Hishikawa, Y., and Warta, W., “Solar cell efficiency tables (version 35)Progress in Photovoltaics: Research and Applications, vol. 18, pp. 144150, 2010.Google Scholar
3. Scofield, J.H., Duda, A., Albin, D., Ballard, B.L., and Predecki, P.K., “Sputtered molybdenum bilayer back contact for CIS based polycrystalline thin-film solar cellsThin Solid Films, vol. 260, pp. 2631, 1995.Google Scholar
4. Orgassa, K., Schock, H.W., and Werner, J.H., “Alternative back contact materials for thin film Cu(In, Ga)Se2 solar cellsThin Solid Films, vol. 431-432, pp. 387391, 2003.Google Scholar
5. Gordillo, G., Grizález, M., and Hernandez, L.C., “Structural and electrical properties of DC sputtered molybdenum films,” Solar Energy Materials and Solar Cells, vol. 51, pp. 327337, 1998.Google Scholar
6. Maissel, L.I., Glang, R., Ed., “Handbook of thin film technology,” New York: McGraw-Hill, 1983.Google Scholar
7. Kaeble, E.F., Handbook of X-rays, New York: McGraw-Hill, 1967.Google Scholar
8. Müller, K.H., “Stress and microstructure of sputter-deposited thin films: Molecular dynamics investigations,” Journal of Applied Physics, vol. 62, pp. 17961799, 1987.Google Scholar