期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 54, 期 4, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/abbe48
关键词
sphere-electrode detectors; semispherical shell electrode silicon detector; electric field distributions; full depletion voltage
资金
- Key Project of National Natural Science Foundation of China [11835008]
- Youth Science Foundation program of National Natural Science Foundation of China [12005089]
- project of Yantai institute for the exchange of driving forces [2019XJDN002]
- Yantai Science and Technology Innovation Development Plan (School-local Cooperation) [2020YT06000324]
This work systematically conducts one-dimensional modeling and simulations of electric and weighting fields for hypothetical sphere-electrode detectors. It presents a practical novel structure of a semispherical electrode silicon detector to overcome traditional 3D-electrode detector deficiencies, with potential applications in photon sciences and security.
In this work, one-dimensional (1D) modeling and simulations of the electric and weighting fields will be systematically carried out for hypothetical sphere-electrode detectors. Exact 1D solutions are obtained for electric and weighting fields in these detectors. Although it is impossible to realize hypothetical sphere-electrode detectors with current technologies, the theoretical work and results on them are good bases for their offspring-practical semi-sphere-electrodes (semisph-electrode) and near-semisph-electrode detectors. The great reduction in full depletion voltage and small capacitance in semisph-electrode and near-semisph-electrode detectors make them very good for applications in photon sciences (x-ray) and safeguard and homeland security (hard x-ray and gamma-ray). A practical novel structure of the three-dimensional (3D) trench electrode detector, namely a novel semisph-electrode silicon detector has been proposed as a practical example. The novel detector has a semispherical shell electrode created in a cuboidal unit cell. It will overcome the traditional 3D-electrode detector deficiencies in electrical performance such as the asymmetrical electric field distribution. Through a computer-aided design tool, 3D modeling and electrical characteristics, simulation of a semispherical electrode silicon detector has been obtained, such as electric field distributions, electron concentration distribution, and full depletion voltage
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