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Effects of Different Fluorine Dopants on the Properties of the Tin Oxide Window Layer and CdTe/CdS Solar Cell

  • Xiaonan Li (a1), Mailasu Bai (a2), Joel Pankow (a3), Sally E. Asher (a4), Helio Moutinho R. Moutinho (a5) and Tim Gessert (a6)...

Abstract

Conductive tin-oxide (SnO2) film is doped by group V or VII elements. Of all possible dopants, fluorine provides n-type SnO2 with the best electronic and optical properties. However, the commonly used fluorine dopant, bromotrifluoromethane (CBrF3), is a greenhouse gas. Thus, an alternative fluorine source is needed. In this work, we compared CIF3 as a fluorine dopant to CBrF3. With CBrF3 dopant, optimized carrier concentration and electron mobility values can reach to mid 1020 cm-3 and over 40 cm2/V-s, respectively. After carrier concentration saturates, the electronic mobility continues to improve with an increase of CBrF3 dopant concentration. As a comparison, to achieve similar carrier concentration, far less CIF3 dopant is required. However, the electron mobility is lower (<30 cm2/V-s) and does not improve with an increase of dopant concentration. The low electron mobility increases the optical absorption, especially of long wavelengthes. Considering CdTe/CdS solar cell efficiency, the device with a CIF3-doped SnO2 window layer provides the lower photocurrent.

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1. Haacke, G., Ann. Rev. Mater. Sci. 7, 73 (1977).
2. Chopra, K.L., Major, S., and Pandya, D.K., Thin Solid Films 102, 1 (1983).
3. Patil, P.S., Mater. Chem. Phys. 59, 185 (1999).
4. Gordon, R.G. and Proscia, J., Solar Energy Materials 18, 263 (1989).
5. Li, X., Ribelin, R., Mahathongdy, Y., Albin, D., Dhere, R., Rose, D., Asher, S., Moutinho, H., and Sheldon, P., AIP Conference Proceedings 462, pp. 230235, (1999).
6. Dhere, R., Moutinho, H.R., Asher, S., Young, D., Li, X., Ribelin, R., and Gessert, T.A., AIP Conference Proceedings 462, (1999) pp. 242247, (1999).
7. Ferekides, C.S., Marinskiy, D., Viswanathan, V., Tetali, B., Palekis, V., Selvaraj, P., and Morel, D.L., Thin Solid Films 361-362, 520, (2000).
8. Thangaraju, B., Thin Solid Films 402, 71 (2002).
9. Shanthi, E., Dutta, V., Banerjee, A., and Chopra, K.L., J. Appl. Phys. 51, 6243 (1980).
10. Vishwakarma, S.R., Upadhyay, J.P., and Prasad, H.C., Thin Solid Films 176, 99 (1989).
11. Proscia, J. and Goldon, R.G., Thin Solid Films 214, 175 (1992).
12. Chopra, K.L, Major, S., and Pandya, D.K., Thin Solid Films 102, 1 (1983).
13. Shanthi, E., Banerjee, A., and Chopra, K.L., Thin Solid Films 88, 93 (1982).
14. Simonis, F., Deij, M. van der, and Hoogendoorn, C.J., Sol. Energy Mater. 1, 221 (1979).
15. Henson, S., Smigielski, K., Hanak, J., Borgeson, F., Meyers, P., and McMaster, A., NCPV Program Review Meeting; Denver, Colorado, 24-26 March 2003, pp. 595596.
16. Li, X., Gessert, T., DeHart, C., Barnes, T., Moutinho, H., Yan, Y., Young, D., Young, M., Perkins, J., and Coutts, T., NCPV Program Review Meeting; Lakewood, Colorado, 14-17 October 2001, pp. 255258.
17. Balasubramanian, U., Masters Thesis: “Indium Oxide as a High Resistivity Buffer Layer for CdTe/CdS Thin Film Solar Cells,” University of South Florida, 53, (2004).
18. Burstein, E., Phys. Rev. 93, 632 (1954).
19. Moss, T.S., Proc. Phys. Soc. (London) B76, 775 (1954).
20. Pankove, J.I., Optical Processes in Semiconductors, Dover Publication, Inc., New York, p.75, (1971).
21. Kerr, L.L., Li, X., Anderson, T.J., Coutts, T.J., Crisalle, O.D., and S.Li, Photovoltaic Energy Conversion, 2003. Proceedings of 3rd World Conference, Osaka, Japan, May 11-18, 2003, Vol. 1, pp. 303306.

Keywords

Effects of Different Fluorine Dopants on the Properties of the Tin Oxide Window Layer and CdTe/CdS Solar Cell

  • Xiaonan Li (a1), Mailasu Bai (a2), Joel Pankow (a3), Sally E. Asher (a4), Helio Moutinho R. Moutinho (a5) and Tim Gessert (a6)...

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