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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

The curves are sorted by diffusion profile (either erfc or Gaussian), type (n or p), and background doping concentration (Nc).

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

Irvin Curves

Nc=1015 cm-3

· n-type erfc

· p-type erfc

· n-type Gaussian

· p-type Gaussian

Nc=1017 cm-3

· n-type erfc

· p-type erfc

· n-type Gaussian

· p-type Gaussian





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