Sensitivity of Unbiased Commercial P-channel Power VDMOSFETs to X-ray Radiation

Autor: A. S. Jevtic, Marko Andjelkovic, Srboljub Stanković, Alberto J. Palma, S. Dimitrijevic, Stefan Ilić, Sandra Veljković, Goran S. Ristić
Rok vydání: 2021
Předmět:
Zdroj: 2021 IEEE 32nd International Conference on Microelectronics (MIEL)
Popis: The effect of X-rays on the p-channel power vertical double diffused metal-oxide-semiconductor field-effect transistors (VDMOSFETs) was investigated. The VDMOSFETs were irradiated without gate polarization using three different Xray beams. Due to the polyenergetic nature of X-rays, their effect is much more complex than the effect of gamma radiation on transistors. The influence of X-rays on threshold voltage shift $(\Delta V_{T})$ and on the creation of fixed traps (FTs) in gate oxide and on switching traps (STs) near and at oxide/semiconductor interface was analyzed. The effect of STs on $\Delta V_{T}$ is more significant than in the case of y-radiation. The obtained results showed that the sensitivity to radiation depends on the radiation energy, and they are in accordance with the theoretical predictions.
Databáze: OpenAIRE