Conception and characterization of a virtual coplanar grid for a 11×11 pixelated CZT detector

Espagnet, Romain; Frezza, Andrea; Martín, J. P.; Hamel, L. A.; Després, Philippe

doi:10.1016/j.nima.2017.03.025

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…In 2017, Espagnet et al [93] aimed to enhance the performance of CZT detectors by investigating the layout, front-end electronics, and characteristics of the dual-channel anode geometry. They determined the compensating coefficients required to reduce electron trapping in CZT, thereby reducing the number of channels needed for using the crystal in high-sensitivity counting applications.…”

Section: Readout Circuitrymentioning

confidence: 99%

Research on the Technological Progress of CZT Array Detectors

Li,

Cheng,

Liu

et al. 2024

Sensors

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CdZnTe (CZT) is a new type of compound semiconductor that has emerged in recent years. Compared to other semiconductor materials, it possesses an ideal bandgap, high density, and high electron mobility, rendering it an excellent room-temperature composite semiconductor material for X-ray and γ-ray detectors. Due to the exceptional performance of CZT material, detectors manufactured using it exhibit high energy resolution, spatial resolution, and detection efficiency. They also have the advantage of operating at room temperature. CZT array detectors, furthermore, demonstrate outstanding spatial detection and three-dimensional imaging capabilities. Researchers worldwide have conducted extensive studies on this subject. This paper, building upon this foundation, provides a comprehensive analysis of CZT crystals and CZT array detectors and summarizes existing research to offer valuable insights for envisioning new detector methodologies.

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Section: Readout Circuitrymentioning

confidence: 99%

Research on the Technological Progress of CZT Array Detectors

Li,

Cheng,

Liu

et al. 2024

Sensors

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show abstract

“…This method prohibits the processing of preamplifier pulses corresponding to holes by comparing pulse height to its rise time. Modern unipolar detectors, i.e., single charge carrier sensors (Frisch and coplanar grids, strip, pixel, hemispherical, and multiple electrodes detectors) [6,12], use dominant electron collection of the charge carriers as well. Previous studies [12] showed that pixelated (CdZn)Te detector can also benefit from…”

Section: Introductionmentioning

confidence: 99%

Charge Sharing in (CdZn)Te Pixel Detector Characterized by Laser-Induced Transient Currents

Vasylchenko

Grill

Belas

et al. 2019

Sensors

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Performance of the (CdZn)Te pixelated detectors heavily relies on the quality of the underlying material. Modern laser-induced transient current technique addresses this problem as a convenient tool for characterizing the associated charge distribution. In this paper, we investigated the charge sharing phenomenon in (CdZn)Te pixel detector as a function of the charge collected on adjacent pixels. The current transients were generated in the defined 4 mm 2 spots using 660 nm laser illumination. Waveforms measured on the pixel of interest and its surroundings were used to build the maps of the collected charge at different biases. The detailed study of the maps allowed us to distinguish the charge sharing region, the region with a defect, and the finest part in terms of the performance part of the pixelated anode. We observed the principal inhomogeneity complicating the assignment of the illuminated spot to the nearest pixel.Sensors 2020, 20, 85 2 of 14 particular design if wired in a form of a virtual coplanar grid. These detectors are featured by specific electrode configurations that in general provide a particular distribution of electric field inside the sample. According to Shockley-Ramo theorem [13], these field effects induce signal as follows:

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Positron Emission Tomography (PET) Imaging Based on Sub-millimeter Pixelated CdZnTe Detectors

Yin

Komarov

2022

Advanced X-Ray Detector Technologies

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Conception and characterization of a virtual coplanar grid for a 11×11 pixelated CZT detector

Cited by 6 publications

References 13 publications

Research on the Technological Progress of CZT Array Detectors

Research on the Technological Progress of CZT Array Detectors

Charge Sharing in (CdZn)Te Pixel Detector Characterized by Laser-Induced Transient Currents

Positron Emission Tomography (PET) Imaging Based on Sub-millimeter Pixelated CdZnTe Detectors

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