微束
探测器
离子
材料科学
光电子学
二极管
半导体
半导体探测器
粒子探测器
航程(航空)
辐射
离子束
平面的
电荷(物理)
载流子
原子物理学
光学
物理
计算机图形学(图像)
量子力学
计算机科学
复合材料
作者
M. Jakšić,Andreo Crnjac,G. Kramberger,Miloš Manojlović,Gordana Laštovička-Medin,M. Rodríguez-Ramos
标识
DOI:10.3389/fphy.2022.877577
摘要
The development of semiconductor detectors with an increased tolerance to high radiation levels often results in devices that deviate significantly from those of the classical design with planar electrodes. Decreasing the charge drift distance and/or introducing localised charge multiplication volumes are two detector development strategies that are often used in an attempt to increase the device radiation hardness. However, such approaches result in a more complex three-dimensional distribution of electrodes and sensitive detector volumes, which presents a challenge for the microscopic characterisation of charge transport properties. IBIC (ion beam-induced charge) is one of the available microscopic characterisation techniques that utilises focused, MeV energy range ions to probe charge transport. Here we used IBIC to probe different detector depths by varying the ion energy and/or angle of incidence and to probe certain detector regions by ions of the same range but with different stopping powers. These investigations are particularly important for studying low gain avalanche diode (LGAD) detectors, where measured interpad distances change with proton energy and where an increased carrier density results in changes in the charge multiplication, which are studied in this work.
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