A Semifloating Gate Controlled Camel Diode Radiation Dosimeter
| Autor: | Cheng-Hao Yu, Ying Wang, Zhi-Qiang Xiang, Yue Hao |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Physics Dosimeter 010308 nuclear & particles physics business.industry Gamma ray 01 natural sciences Electronic Optical and Magnetic Materials Threshold voltage Logic gate Absorbed dose 0103 physical sciences Optoelectronics Electric potential Electrical and Electronic Engineering business Sensitivity (electronics) Diode |
| Zdroj: | IEEE Transactions on Electron Devices. 63:2200-2204 |
| ISSN: | 1557-9646 0018-9383 |
| DOI: | 10.1109/ted.2016.2537303 |
| Popis: | A camel diode (CD) gamma-ray dosimeter with dual semifloating gates (SFGs) is presented. The SFG diode performs the function of collecting holes accumulated in the potential hump of CD, and hence controls the barrier height. With the silicon depletion instead of oxide as sensitive area, the sensitivity of the dosimeter is enhanced, while the volume is reduced compared with the conventional dosimeters. Moreover, the dosimeter requires only 2 V bias to reset within 1 ms. The numerical simulation has been carried out with Sentaurus TCAD. As a result, a linear dependence of threshold voltage on absorbed dose of the gamma rays was obtained with a sensitivity of 143 mV/Gy. Due to its high sensitivity, low power, and convenient resetting operation, the design is highly suitable for radiotherapy applications. |
| Databáze: | OpenAIRE |
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