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Comparison Between Cadmium Zinc Telluride Crystals Grown in Russia and in the Ukraine

  • H. Hermon (a1), M. Schieber (a2), R. B. James (a1), N. Yang (a1), A. J. Antolak (a1), D. H. Morse (a1), N. N. P. Kolesnikov (a3), Yu. N. Ivanov (a3), V. Komar (a4), M. S. Goorsky (a5), H. Yoon (a5), J. Toney (a6) and T. E. Schlesinger (a6)...

Abstract

A comparative analysis of different Cd1−xZnxTe (CZT) crystals grown by a vertical high pressure Bridgman (VHPB) method is reported. The results of several analytical techniques, such as triple axis x-ray diffraction (TAD), rocking curves, low temperature photoluminescence (PL), scanning electron microscopy (SEM), and proton induced x-ray emission (PIXE) are discussed. Segregated carbon inclusions were identified by SEM and energy dispersive x-ray fluorescence (EDXRF), and the results are interpreted in terms of constitutional supercooling of the solidifying CZT melt. The carbon inclusions significantly decrease the resistivity, and in some cases, the noise is too large for the fabrication of radiation detectors. Combining these results with other measurements reported by our research team [1], we identify correlations between the growth and the defects identified in these CZT crystals.

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1. Hermon, H., Schieber, M., James, R.B., Kolesnikov, N.N. P., Ivanov, Yu. N., Komar, V., Goorsky, M.S., Yoon, H., Toney, J., and Schlesinger, T.E., in Semiconductors for Room Temperature Radiation Detector applications II, Vol.487, edited by James, R.B. et al. (Materials Research Society, Pittsburgh, PA, 1998).
2. Butler, J.F., Doty, F.P. and Lingren, C., Proc. SPIE, Vol.1734 (1992) 131.
3. Doty, F.P., Friesenhahn, S.J., Butler, J.F. and Hink, P.L., Proc. SPIE, Vol.1945 (1993) 145.
4. Butler, J.F., Doty, F.P., Apotovsky, B., Lajzerowicz, J. and Verger, L., Mater. Sci. Engin., B16 (1993) 291.
5. James, R.B., Schlesinger, T.E., Lund, J., Schieber, M., in Semiconductors for Room Temperature Nuclear Detector Applications Semiconductors and Semimetals, Vol.43, Academic Press, New York, (1995) 335.
6. Schieber, M., Hermon, H., James, R.B., Lund, J., Antolak, A., Morse, D., Kolesnikov, N.N., Ivanov, Yu. N., Goorsky, M.S., Van Scyoc, J.M., Yoon, H., Toney, J., Schlesinger, T.E., Doty, F.P., and Cozzatti, J.P., IEEE Trans. on Nuclear Science. 44 (6) in press. (1997).
7. Kolesnikov, N.N., Kolchin, A.A., Alov, D.L., Ivanov, Yu. N., Chemov, A.A., Schieber, M., Hermon, H., James, R.B., Goorsky, M.S., Yoon, H., Toney, J., Brunett, B., Schlesinger, T.E., J. Cryst. Growth 174 (1997) 256266.
8. Schieber, M., Hermon, H., James, R. B., Lund, J., Antolak, A., Morse, D., Kolesnikov, N. N., Ivanov, Yu. N., Goorsky, M. S., Van Scyoc, J. M., Yoon, H., Toney, J., Schlesinger, T. E. and Doty, P., IEEE Trans. on Nucl. Sc. 1997, in press.
9. Schieber, M., Hermon, H., James, R. B., Lund, J., Antolak, A., Morse, D., Kolesnikov, N.N., Ivanov, Yu. N., Goorsky, M.S., Yoon, H., Toney, J. and Schlesinger, T.E., Proceedings of SPIE, Vol.3115 (1997) 305.
10. Hermon, H., Schieber, M., James, R.B., Lund, J., Antolak, A.J., Morse, D.H., Kolesnikov, N.N.P., Ivanov, Yu. N., Goorsky, M. S., Yoon, H., Toney, J., and Schlesinger, T.E., Proc. of the Workshop of GaAs, 1997, Cividally, Italy (June 1997).
11. Yoon, H., Van Scyoc, J.M., Goorsky, M.S., Hermon, H., Schieber, M., Lund, J.C. and James, R.B., J. of Elec. Mat. Vol.26(#6), (1997) 529.
12. Antolak, A.J., Bench, G.S., Pontau, A.E., Morse, D.H., Hiekinen, D.W. and Weirup, D.L., Nucl. Instr. Meth. A353, (1996) 568.

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Comparison Between Cadmium Zinc Telluride Crystals Grown in Russia and in the Ukraine

  • H. Hermon (a1), M. Schieber (a2), R. B. James (a1), N. Yang (a1), A. J. Antolak (a1), D. H. Morse (a1), N. N. P. Kolesnikov (a3), Yu. N. Ivanov (a3), V. Komar (a4), M. S. Goorsky (a5), H. Yoon (a5), J. Toney (a6) and T. E. Schlesinger (a6)...

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