Skip to main content Accessibility help
×
Home

Wet-Chemical Synthesis of Thin-Film Solar Cells

  • R.P Raffaelle (a1), W. Junek (a1), J. Gorse (a2), T. Thompson (a2), J.D Harris (a3), J. Cowen (a3), D. Hehemann (a3), G. Rybicki (a4) and A.F. Hepp (a4)...

Abstract

We have been working on the development of wet-chemical processing methods that can be used to create thin film photovoltaic solar cells. Electrochemically deposition methods have been used to produce copper indium diselenide (CIS) thin films on molybdenum coated polymer substrates. CIS has an extremely high optical absorption coefficient, excellent radiation resistance, and good electrical conductivity and thus has proved to be an ideal absorber material for thin film solar cells. A series of compositionally different p-type CIS films were produced by using different electrochemical deposition potentials. Cadmium sulfide (CdS) window layers were deposited directly on these CIS films using a chemical bath process. CdS is a naturally ntype wide-bandgap semiconductor which has good transparency and is well lattice-matched to CIS. Zinc oxide thin films were grown by electrochemical deposition directly on the CdS films. ZnO is a transparent and conductive thin film that serves as the top contact of the cells. The structural and elemental properties of the individual ZnO, CdS and CIS films were characterized by x-ray diffraction and energy dispersive spectroscopy. The electrical behavior of the CdS on CIS junctions was determined using current versus voltage measurements. We will discuss the performance of these devices based on the physical properties of the component films and the processing methods employed in their fabrication.

Copyright

References

Hide All
1 Flood, D.J., Int'l Photovolt. Solar Energy Conf., 5, Japan, 1990, p.551.
2 Zweibel, K., Ullal, H.S., and Roedem, B. von, 25th IEEE Photovoltaic Specialists Conf., Washington, 1996, p. 159.
3 Schock, H.W., Solar Energy Materials and Solar Cells 34, 1994, p.19.
4 Tuttle, J.R., Contreras, M.A., Gillispie, T.J., Ramanathan, K.R., Tenant, A.L., Keane, J., Gabor, A.M., and R, Noufi, Prog. Photovoltaics 3, 1995, p.235.
5 Birkmire, R.W., McCandless, B.E., Shafarman, W.N., and Varrin, R.D., Proc. Of the 9th European Photovoltaic Solar Energy Conference, Freiburg, Germany, 1991, p. 1415.
6 Lanning, B.R. and Armstrong, J.H., Int. J. Solar Energy 12, 1992, p.247.
7 Ma, J., Ji, F., Ma, H., Li, S., Thin Solid Films 279, 1996, p.213.
8 Lee, J. and Tak, Y., Mat. Res. Soc. Symp. 49, 1998, p.457.
9 Ito, K. and Nakamura, K., Thin Solid Films 286, 1996, p.35.
10 Raffaelle, R.P., Mantovani, J.G., Friedfeld, R.B., Bailey, S.G., Hubbard, S.M., 26th IEEE Photovoltaic Specialists Conf., Anaheim, 1997, p.559.

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