Simulation of charge sharing effects in 70 μm pixelated CdTe sensor
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F22%3A00354672" target="_blank" >RIV/68407700:21340/22:00354672 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21230/22:00354672
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1742-6596/2374/1/012130" target="_blank" >https://iopscience.iop.org/article/10.1088/1742-6596/2374/1/012130</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/2374/1/012130" target="_blank" >10.1088/1742-6596/2374/1/012130</a>
Alternative languages
Result language
angličtina
Original language name
Simulation of charge sharing effects in 70 μm pixelated CdTe sensor
Original language description
Pixel detectors become an integral part of medical imaging, nondestructive testing, space science and particle physics. Sensors that are bump bonded to readout ASICs are made from various materials such as GaAs, Si, CdTe, and CdZnTe. Current research tends to use CdTe/CdZnTe as gamma-ray sensors due to its high absorption coefficient in the gamma spectrum. With decreasing size of pixel pitch, charge diffusion and secondary fluorescent photons cause charge sharing between neighboring pixels. That decreases the spatial and spectral resolution of the detector. This study simulated the effects of charge diffusion in a 2 mm thick 70 μm pixelated CdTe using TCAD. We created a 3D model of the sensor with an array of 5 x 5 pixels. We simulated the propagation of e-h pairs generated upon the absorption of gamma photons in CdTe. Based on the simulation outcome, we calculated the collection time, drift time and pixel capacitance. Finally, we propose a sensor model for use in analog front-end design.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Journal of Physics: Conference Series
ISBN
—
ISSN
1742-6588
e-ISSN
1742-6596
Number of pages
4
Pages from-to
1-4
Publisher name
IOP Institute of Physics
Place of publication
Bristol
Event location
online, orig. Whistler, British Columbia
Event date
May 23, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
—