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Chlorine Doping of Cadmium Sulfide on the Example of CBD CdS

  • Hiie Jaan (a1), Federico Quinci (a2), Vanni Lughi (a3), Valter Sergo (a4), Vello Valdna (a5), Valdek Mikli (a6), Erki Kärber (a7) and Taavi Raadik (a8)...

Abstract

The role of thermal annealing and of CdCl2 as a main source of electrically active but vaporizable chlorine doping in chemical bath deposited CdS thin films is studied. The films were deposited on glass substrates from aqueous solution of either CdCl2, NH4Cl, NH4OH, and thiourea, or CdSO4, (NH4)2SO4, NH4OH, and thiourea. Films deposited in the presence of CdCl2 and annealed in H2 atmosphere at 310 and 420 °C show a resistivity lower than 10 Ω·cm, one order of magnitude less than for identically annealed films deposited in absence of CdCl2. Annealing at 420 °C in closed ampoules, where a counter pressure of CdCl2 builds up, leads to a lower resistivity on the order of 10−1 Ω·cm, confirming the key role of chlorine on the electronic properties. However, further characterization via photoluminescence raises new questions about chlorine-related defects and their role in the mechanisms that govern film resistivity.

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1. Shafarman, W. N. and Stolt, L. CuInGaSe2 Solar Cells, pp. 584591, and B. E. McCandless and J. Sites Cadmium Telluride Solar Cells, pp. 631-633, in Handbook of Photovoltaic Science and Engineering, edited by A. Luque and S. Hegedus (Wiley, 2003).
2. McCandless, B. E. Shafarman, W. N., Conf. Rec. WCPEC-3 (2003).
3. Altosaar, M. Kukk, P. Hiie, J. J. Inorg. Chemistry 28, 69(1983) (In Russian).
4. Shiraki, Y. and, T. Shimada Komatsubara, K. F. J. Appl. Physics 45, 3554(1974).
5. Hodes, G. Chemical Solution Deposition of Semiconductor Films, (Marcel Dekker Inc., 2003) pp. 4050.
6.International PDF files of Cadmium Sulfide No: 01-089-0440, CSD: 81925(ICSD) and No: 01-074-9665, CSD: 154188(ICSD), (2007).
7. Kröger, F. A., Vink, H. J. and Boomgaard, J. van den, Z. phys. Chem. (B) 203 1 (1954); F. A. Kröger, The Chemistry of Imperfect Crystals, (North Holland Publ. Co., 1964).
8. Srivastava, O. K. and Secco, E. A. Canadian Journal of Chemistry 45, 1375, 3199(1967).

Keywords

Chlorine Doping of Cadmium Sulfide on the Example of CBD CdS

  • Hiie Jaan (a1), Federico Quinci (a2), Vanni Lughi (a3), Valter Sergo (a4), Vello Valdna (a5), Valdek Mikli (a6), Erki Kärber (a7) and Taavi Raadik (a8)...

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