Qinzhi Wu, Changshi Liu, Lingshan Zhang, et al. γ-ray irradiation-induced Si-SiO2 interfacial state and its energy level distribution of its density in MOS structure[J]. Nuclear techniques, 1989, 12(4): 201-204.
Qinzhi Wu, Changshi Liu, Lingshan Zhang, et al. γ-ray irradiation-induced Si-SiO2 interfacial state and its energy level distribution of its density in MOS structure[J]. Nuclear techniques, 1989, 12(4): 201-204.DOI:
and the energy level distribution of the density introduced in polysilicon gate MOS samples with n (100) silicon substrate after
60
Co
γ
-ray irradiation are studied. Experimental evidence indicates that the effect of irradiation strongly depends on the bias field. When samples are irradiated at a+1MV/cm bias field
both the oxide trapped charge and the interfacial state density present a peak. The midgap state density is proportional to the density of holes trapped. While the interfacial state density of polysilicon gate MOS samples in the forbidden band obeys the U-type distribution
a broad peak of interfacial state density with definite energy level (
E
с
-
E
s
=0.41-0.5eV) appears in the A1-gate n substrate MOS samples after irradiation.
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references
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