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Effect of Ionizing Radiation on Defects and 1/f Noise in Ge pMOSFETs

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9 Author(s)
Cher Xuan Zhang ; Electr. Eng. & Comput. Sci. Dept., Vanderbilt Univ., Nashville, TN, USA ; Francis, S.A. ; En Xia Zhang ; Fleetwood, D.M.
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The irradiation and annealing responses of Ge pMOSFETs have been investigated under transmission gate bias. Both the radiation-induced charge trapping and the low frequency (1/f) noise increase with total ionizing dose and decrease with annealing time. The smallest increases in noise after irradiation are observed for Ge pMOSFETs with the lowest halo implantation doses. The smallest increases in oxide and interface trap charge densities are obtained for devices with eight monolayers of Si at the interface, as compared to devices with five Si monolayers.

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Nuclear Science, IEEE Transactions on  (Volume:58 ,  Issue: 3 )