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Efficient Thin-Film Polycrystalline-Silicon Solar Cells Based on Aluminium-Induced Crystallization
Published online by Cambridge University Press: 01 February 2011
Abstract
Efficient thin-film polycrystalline-silicon (pc-Si) solar cells on inexpensive substrates could lower the price of photovoltaic electricity substantially. At the MRS conference in 2006, we presented a pc-Si solar cell with an efficiency of 5.9% that had an absorber layer made by aluminum-induced crystallization (AIC) of amorphous silicon followed by high-temperature epitaxial thickening. The efficiency of this cell was mainly limited by the current density. To obtain higher efficiencies, we therefore need to implement an effective light trapping scheme in our pc-Si solar cell process. In this work, we describe how we recently enhanced the current density and efficiency of our cells. We achieved a cell efficiency of 8.0% for pc-Si cells in substrate configuration. Our cell process is based on pc-Si layers made by AIC and thermal CVD on smoothened alumina substrates. The cells are in substrate configuration with deposited a-Si heterojunction emitters and interdigitated top contacts. The front surface of the cells is plasma textured which leads to an increase in current density. The current density is further enhanced by minimizing the back surface field thickness of the cells to reduce the light loss in this layer. Our present pc-Si solar cell efficiency together with the fast progression that we have made over the last few years indicate the large potential of pc-Si solar cells based on the AIC seed layer approach.
Keywords
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- Research Article
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- Copyright
- Copyright © Materials Research Society 2007
References
1
Beaucarne, G. and Slaoui, A. in Thin-film Solar Cells: Fabrication, Characterization and Applications, edited by Poortmans, J. and Arkhipov, V. (Wiley, New York, 2006) pp. 97–131.Google Scholar
2
Basore, P., Proceedings of the 21st European Photovoltaic Solar Energy Conference, pp. 544–548 (2006).Google Scholar
3
Gordon, I., Gestel, D. Van, Carnel, L., Nieuwenhuysen, K. Van, Beaucarne, G., and Poortmans, J., Mater. Res. Soc. Symp. Proc
910, A23–04 (2006).Google Scholar
4
Nast, O., Puzzer, T., Koschier, L.M., Sproul, A.B., and Wenham, S.R., Appl. Phys. Lett.
73, 3214 (1998).Google Scholar
5
Aberle, A.G., Proceedings of the 21st European Photovoltaic Solar Energy Conference, pp. 738–741 (2006).Google Scholar
6
Gordon, I., Gestel, D. Van, Nieuwenhuysen, K. Van, Carnel, L., Beaucarne, G., and Poortmans, J., Thin Solid Films
487, 113 (2005).Google Scholar
7
Dekkers, H.F.W., Agostinelli, G., Dehertoghe, D., and Beaucarne, G., Proceedings of the 19th European Photovoltaic Solar Energy Conference, pp. 412–415 (2004).Google Scholar
8
Carnel, L., Gordon, I., gestel, D. Van, Beaucarne, G., Poortmans, J., and Stesmans, A., J. Appl. Phys.
100, 063702 (2006).Google Scholar
9
Gordon, I., Nieuwenhuysen, K. Van, Carnel, L., Gestel, D. Van, Beaucarne, G., and Poortmans, J., Thin Solid Films 511-512, 608 (2006).Google Scholar
10
Carnel, L., Gordon, I., Dekkers, H., Duerinckx, F., gestel, D. Van, Beaucarne, G., and Poortmans, J., Proceedings of the 21st European Photovoltaic Solar Energy Conference, pp. 830–833 (2006).Google Scholar
11
Gestel, D. Van, Gordon, I., Carnel, L., Pinckney, L.R., Mayolet, A., D'Haen, J., Beaucarne, G., and Poortmans, J., Mater. Res. Soc. Symp. Proc
910, A26–04 (2006).Google Scholar
12
Gestel, D. Van, Romero, M.J., Gordon, I., Carnel, L., D'Haen, J., Beaucarne, G., AlJassim, M., and Poortmans, J., Appl. Phys. Lett.
90, 092103 (2007).Google Scholar
13
Gestel, D. Van, Gordon, I., Carnel, L., Beaucarne, G., and Poortmans, J., Paper presented at this conference.Google Scholar