Interface trapping properties of nMOSFETs with Al2O3/SiOxNy/Si(100) gate dielectric stacks after exposure to ionizing radiation
The interface properties of Al2O3/SiOxNy/Si(100) nMOSFETs are examined using sub-threshold currentvoltage, variable base charge pumping, and low frequency (1/f) noise measurements. It is shown that exposure to ionizing irradiation leads to a reduction in effective interface trap density (Dit) for both positive and negative bias irradiations. This effect may result from radiation-induced neutralization of a large pre-irradiation density of border traps.
interface traps charge pumping border traps 1/f noise radiation effects high-?