The capacitance-based sensing of fully-depleted silicon-on-insulator (FDSOI) variable capacitors for Co-60 gamma radiation is investigated. Linear response of the capacitance is observed for radiation dose up to 64 Gy, while the percent capacitance change per unit dose is as high as 0.24%/Gy. An analytical model is developed to study the operational principles of the varactors and the maximum sensitivity as a function of frequency is determined. The results show that FDSOI varactor dosimeters have potential for extremely-high sensitivity as well as the potential for high frequency operation in applications such as wireless radiation sensing.

中文翻译：

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使用完全耗尽的绝缘体上硅器件基于电容的 Co-60 辐射剂量测定

研究了基于电容的全耗尽绝缘体上硅 (FDSOI) 可变电容器对 Co-60 伽马辐射的感测。对于高达 64 Gy 的辐射剂量，观察到电容的线性响应，而每单位剂量的电容变化百分比高达 0.24%/Gy。开发了一个分析模型来研究变容二极管的工作原理，并确定作为频率函数的最大灵敏度。结果表明，FDSOI 变容二极管剂量计具有极高灵敏度的潜力以及在无线辐射传感等应用中高频操作的潜力。