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Sensors 2009, 9(5), 3491-3526; doi:10.3390/s90503491
Review

Progress in the Development of CdTe and CdZnTe Semiconductor Radiation Detectors for Astrophysical and Medical Applications

1,* , 1, 2,* , 3
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4
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5
 and
6
Received: 26 March 2009 / Revised: 5 May 2009 / Accepted: 8 May 2009 / Published: 12 May 2009
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Italy)

Abstract

Over the last decade, cadmium telluride (CdTe) and cadmium zinc telluride (CdZnTe) wide band gap semiconductors have attracted increasing interest as X-ray and gamma ray detectors. Among the traditional high performance spectrometers based on silicon (Si) and germanium (Ge), CdTe and CdZnTe detectors show high detection efficiency and good room temperature performance and are well suited for the development of compact and reliable detection systems. In this paper, we review the current status of research in the development of CdTe and CdZnTe detectors by a comprehensive survey on the material properties, the device characteristics, the different techniques for improving the overall detector performance and some major applications. Astrophysical and medical applications are discussed, pointing out the ongoing Italian research activities on the development of these detectors.
Keywords: compound semiconductors; CdTe and CdZnTe detectors; X-ray and gamma ray spectroscopy compound semiconductors; CdTe and CdZnTe detectors; X-ray and gamma ray spectroscopy
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Del Sordo, S.; Abbene, L.; Caroli, E.; Mancini, A.M.; Zappettini, A.; Ubertini, P. Progress in the Development of CdTe and CdZnTe Semiconductor Radiation Detectors for Astrophysical and Medical Applications. Sensors 2009, 9, 3491-3526.

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