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Preparation and Performance of CdZnTe Ray Detector

Jun Jiang(Kunming Institute of Physics)

Abstract

γ-ray and x-ray detectors made by Cd1-xZnxTe alloy can gain high energy resolution and detect efficiency at room temperature due to its high atomic number, large energy gap and high density, which were well-developed recently. By well controlled of Cadmium partial pressure and compensatory doping technique, Ф90 mm Cd1-xZnxTe alloy obtained successfully (ρ≥1011 Ω·cm) by an improved-Bridgman method. 3 mm × 3 mm × 3 mm CZT detector was made at Kunming Institute of Physics, which has energy resolution of 3.52% (FWHM) at room temperature when detect 59.54 KeV Am241 γ-ray source.

Keywords

Cadmium zinc telluride (CZT); Room temperature detector; Crystal growth; Preparation process; Performance

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References

Bertolucci, E., Maiorino, M., Mettivier, G., et al., 2002. Nucl Instrument Methods. A487, 193.

Czock, K.H., Arlt, R., 2001. Nucl Instrument Methods. A458, 175-182.

Asahi, T., et al., 1996. Journal of Crystal Growth. 161, 20.

Limousin, O., 2003. New trends in CdTe and CdZnTe detector for X-and gamma-ray applications. Nucl Instrument Methods. A504, 24.

Li, W.W., Sang, W.B., 2004. Research progress of CdZnTe Nuclear radiation detector materials and devices. Shanghai Nonferrous Metals. 25(2), 88-89.

Peter, K., 1990. The Pressure-Temperature-Composition Projection of the system Cadmium-tellurium. Crystal Res. Technol. 25, 1107.

Hiroshi Kimura, M., Komiya, H., 1973. Melt Compositions ofⅡ-Ⅵcompounds during Crystal Growth in a Hight-Pressure Furnace. Journal of Crystal Growth. 20, 283-291.

Rybk, A.V., Leonov, S.A., Prokhoretz, I.M., 2001. Influence of detector surface processing on detector performance. Nuclear Inst & Methods in Physics Research A. 458, 248-253.

Morton, E.J., Hossain, M.A., Antonis, P.De., et al., 2001. Investigation of Au-CdZnTe contacts using photovoltaic measurement. Nuclear Instruments & Methods in Physics Research. A458, 558-562.

Lachish, U., 1999. CdTe and CdZnTe semiconductor gamma detectors equipped with ohmic contacts. Nuclear Instruments and Methods. A436, 146-149.

Ricq, S., Glasser, F., Garin, M., 2001. Study of CdTe ang CdZnTe dectors for X-ray computed tomography. Nuclear Instruments and Methods in Physics Research. 458, 534-543.

Malm, H.L., Martini, M., 1974. Polarization Phenomena of CdTe nuclear Radiation Detectors. IEEE Transactions on Nuclear Science. 21, 322-330.

Bell, R.O., Entine, G., Serreze, H.B., 1974. Time dependent Polarization of CdTe Gamma-ray Detectors. Nuclear Instruments & Methods. 117, 267-271.



DOI: http://dx.doi.org/10.26549/met.v6i1.9507

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