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Open AccessArticle

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

Institute of Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, CZ-12116 Prague 2, Czech Republic
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Sensors 2020, 20(1), 85; https://doi.org/10.3390/s20010085
Received: 26 November 2019 / Revised: 12 December 2019 / Accepted: 19 December 2019 / Published: 22 December 2019
(This article belongs to the Section Physical Sensors)
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 mm2 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. View Full-Text
Keywords: (CdZn)Te; transient current; charge sharing; small pixel effect (CdZn)Te; transient current; charge sharing; small pixel effect
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MDPI and ACS Style

Vasylchenko, I.; Grill, R.; Belas, E.; Praus, P.; Musiienko, A. Charge Sharing in (CdZn)Te Pixel Detector Characterized by Laser-Induced Transient Currents. Sensors 2020, 20, 85. https://doi.org/10.3390/s20010085

AMA Style

Vasylchenko I, Grill R, Belas E, Praus P, Musiienko A. Charge Sharing in (CdZn)Te Pixel Detector Characterized by Laser-Induced Transient Currents. Sensors. 2020; 20(1):85. https://doi.org/10.3390/s20010085

Chicago/Turabian Style

Vasylchenko, Igor; Grill, Roman; Belas, Eduard; Praus, Petr; Musiienko, Artem. 2020. "Charge Sharing in (CdZn)Te Pixel Detector Characterized by Laser-Induced Transient Currents" Sensors 20, no. 1: 85. https://doi.org/10.3390/s20010085

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