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Effect of CdCl2 Treatment of CdS Films on CdTe/CdS Solar Cells

Published online by Cambridge University Press:  10 February 2011

W. Song ,
D. Mao ,
L. Feng ,
Y. Zhu ,
M. H. Aslan ,
R. T. Collins  and
J. U. Trefny
W. Song
Affiliation:
Department of Physics, Colorado School of Mines, Golden, CO 80401
D. Mao
Affiliation:
Department of Physics, Colorado School of Mines, Golden, CO 80401
L. Feng
Affiliation:
Department of Physics, Colorado School of Mines, Golden, CO 80401
Y. Zhu
Affiliation:
Department of Physics, Colorado School of Mines, Golden, CO 80401
M. H. Aslan
Affiliation:
Department of Physics, Colorado School of Mines, Golden, CO 80401
R. T. Collins
Affiliation:
Department of Physics, Colorado School of Mines, Golden, CO 80401
J. U. Trefny
Affiliation:
Department of Physics, Colorado School of Mines, Golden, CO 80401
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Abstract

We investigated the effect of CdCl2 treatment of CdS films on the photovoltaic performance of polycrystalline CdTe/CdS solar cells. X-ray diffraction studies indicated that the diffusion of S into CdTe is qualitatively the same for CdTe/CdS films fabricated with both as-deposited and CdCl2-treated CdS. A major difference was observed in the extent of Te diffusion into CdS for the two types of CdS films. Full conversion of CdS into CdS1-yTey; was observed for films prepared with asdeposited CdS, while the formation of the ternary phase was below the detection limit for films prepared with CdCl2-treated CdS. Photoluminescence measurements confirmed this result. The difference in interdiffusion leads to differences in optical transmission of CdS films and spectral response of CdTe/CdS solar cells. An increase of 2.7 mA/cm2 in short-circuit current density was observed as a result of improved spectral response in the wavelength range of 500–600 nm for the CdCl2-treated CdS.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 426: Symposium J – Thin Films for Photovoltaic and Related Device , 1996 , 331
Copyright
Copyright © Materials Research Society 1996

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References

1. Chu, T.L., Chu, S.S., and Ang, S.T., J. Appl. Phys., 64, 1233 (1988).Google Scholar
2. Sudharsanan, R. and Rohatgi, A., Proceedings of the 21st Photovoltaic Specialists Conference (IEEE, New York, 1990) p.504.Google Scholar
3. Morris, G.C. and Das, S.K., Proceedings of the 23rd Photovoltaic Specialists Conference (IEEE, New York, 1993) p. 469.Google Scholar
4. McCandless, B.E. and Hegedus, S.S., Proceedings of the 22nd Photovoltaic Specialists Conference (IEEE, New York, 1991) p. 967.Google Scholar
5. Kim, D., Pozder, S., Qi, B., Zhu, Y., Furtak, T.E., Williamson, D.L., and Trefny, J.U., 12th NREL Photovoltaic Program Review, AlP Conference Proceedings 306, edited by Noufi, R. and Ullal, H.S., (ALP, New York, 1994) p. 320.Google Scholar
6. Chou, H.C., Rohatgi, A., Thomas, E.W., Kamra, S., and Bhat, A.K., J. Electrochem. Soc., 142, 254 (1995).Google Scholar
7. Chu, T.L., Chu, S. S., Schultz, N., Wang, C., and Wu, C.Q., J. Electrochem. Soc. 139,2443 (1992).Google Scholar
8. Mao, D., Feng, L.H., Zhu, Y., Tang, J., Song, W., Collins, R., Williamson, D.L., and Trefny, J.U., 13th NREL Photovoltaic Program Review, AlP Conference Proceedings 353, edited by Ullal, Harin S. and Witt, C. Edwin, (ALP, New York, 1995) p.352.Google Scholar
9. de Melo, O., Melendez-Lira, M., Hemandez-Calderon, I., Banos, L., and Morales-Acevedo, A., Proceedings of the First World Conference on Photovoltaic Energy Conversion (IEEE, New York, 1994) p.369.Google Scholar