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ECE444: Theory and Fabrication of Integrated Circuits
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Irvin Curves

Irvin curves are used to determine average conductivity (ρ) for diffused layers given 2 of the three following parameters:

  • Ns (surface concentration)
  • x/xj (for buried layers)
  • average conductivity

Alternatively, Irvin.net can be used to calculate exact values for the average conductivity.