Electrical properties of MOS structures on nitrogen-doped Czochralski-grown silicon: A positron annihilation study
Applied Surface Science(2006)
摘要
Measurements of interface trap density, effective generation lifetime (GL) and effective surface generation velocity have been performed using different methods on selected MOS structures prepared on nitrogen-doped Czochralski-grown (NCz) silicon. The application of the positron annihilation technique using a pulsed low energy positron system (PLEPS) focused on the detection of nitrogen-related defects in NCz silicon in the near surface region. In the case of p-type Cz silicon, all the results could be used for the testing of homogeneity. In n-type Cz silicon, positron annihilation was found insensitive to nitrogen doping.
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关键词
Czochralski-grown silicon,Nitrogen doping,Positron annihilation,Slow positron beam,MOS structure,Generation lifetime
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