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

Sordo SD, Abbene L, Caroli E, Mancini AM, Zappettini A, Ubertini P - Sensors (Basel) (2009)

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: INAF/IASF Palermo, Via Ugo La Malfa 153, 90146 Palermo, 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.

No MeSH data available.


The weighting potential for pixel detectors and a planar detector as a function of the normalized interaction depth (interaction depth/detector thickness); the w/L parameter is the ratio between the pixel size and the detector thickness. The weighting potential and then the detector signals are more unipolar as the w/L ratio decreases, in agreement with the small pixel effect.
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f18-sensors-09-03491: The weighting potential for pixel detectors and a planar detector as a function of the normalized interaction depth (interaction depth/detector thickness); the w/L parameter is the ratio between the pixel size and the detector thickness. The weighting potential and then the detector signals are more unipolar as the w/L ratio decreases, in agreement with the small pixel effect.

Mentions: Figure 18 shows the weighting potential of a pixel detector, compared to a planar detector. It is possible to improve the unipolar properties of pixel detectors by reducing the w/L ratio (i.e. pixel size to detector thickness), according to the theory of the small pixel effect [56].


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

Sordo SD, Abbene L, Caroli E, Mancini AM, Zappettini A, Ubertini P - Sensors (Basel) (2009)

The weighting potential for pixel detectors and a planar detector as a function of the normalized interaction depth (interaction depth/detector thickness); the w/L parameter is the ratio between the pixel size and the detector thickness. The weighting potential and then the detector signals are more unipolar as the w/L ratio decreases, in agreement with the small pixel effect.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3297127&req=5

f18-sensors-09-03491: The weighting potential for pixel detectors and a planar detector as a function of the normalized interaction depth (interaction depth/detector thickness); the w/L parameter is the ratio between the pixel size and the detector thickness. The weighting potential and then the detector signals are more unipolar as the w/L ratio decreases, in agreement with the small pixel effect.
Mentions: Figure 18 shows the weighting potential of a pixel detector, compared to a planar detector. It is possible to improve the unipolar properties of pixel detectors by reducing the w/L ratio (i.e. pixel size to detector thickness), according to the theory of the small pixel effect [56].

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: INAF/IASF Palermo, Via Ugo La Malfa 153, 90146 Palermo, 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.

No MeSH data available.