Study on the spectrum improvement of a capacitive Frisch grid structure for CdZnTe Detector

Shi, Zhubin; Wang, Linjun; Min, Jiahua; Qin, Kaifeng; Liang, Xiaoyan; Zhang, Jijun; Huang, Jian; Tang, Ke; Xia, Yiben

doi:10.1016/j.radmeas.2011.02.015

Cited by 3 publications

(1 citation statement)

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“…Several design parameters were investigated using finite-element analysis (FEA). These design parameters focus on the anode areas, the ratio of screen length to device height, the ratio of anode diameter to device height and the ratio of insulator thickness to relative permittivity [31,32]. The aim of the FEA simulation is to derive a compressed weighting potential toward the anode and thus improving energy resolution.…”

Section: Unipolar Detectors Of Different Anode Geometriesmentioning

confidence: 99%

Progress in the Development of CdZnTe Unipolar Detectors for Different Anode Geometries and Data Corrections

Zhang

et al. 2013

Sensors

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CdZnTe detectors have been under development for the past two decades, providing good stopping power for gamma rays, lightweight camera heads and improved energy resolution. However, the performance of this type of detector is limited primarily by incomplete charge collection problems resulting from charge carriers trapping. This paper is a review of the progress in the development of CdZnTe unipolar detectors with some data correction techniques for improving performance of the detectors. We will first briefly review the relevant theories. Thereafter, two aspects of the techniques for overcoming the hole trapping issue are summarized, including irradiation direction configuration and pulse shape correction methods. CdZnTe detectors of different geometries are discussed in detail, covering the principal of the electrode geometry design, the design and performance characteristics, some detector prototypes development and special correction techniques to improve the energy resolution. Finally, the state of art development of 3-D position sensing and Compton imaging technique are also discussed. Spectroscopic performance of CdZnTe semiconductor detector will be greatly improved even to approach the statistical limit on energy resolution with the combination of some of these techniques.

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Section: Unipolar Detectors Of Different Anode Geometriesmentioning

confidence: 99%