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Indiffusing Dopant Type
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Diffusion Type
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xj (μm)
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buried layer x (μm)
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Nsurface (cm-3)
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Nc (cm-3
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Solution
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avg σ (Ω-cm)-1 =
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Rs (Ω/sq) =
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IRVIN.net
Input parameters into the calculator to the left, then press Calculate. The values for average σ and
Rs will be calculated and displayed in the Solution pane to the left.
About Irvin.net
Irvin.net is a utility for calculating average conductivity (σ) for diffused layers.
In his original formula to calculate sheet restistance, Irvin used the idea that 1/ρ ≈ β*Nα for some
constants α and β. He fitted experimental data to this function in a piecewise manner.
For more detail see his original work in the Bell Systems Technical Journal, March 1962.
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Answers provided by this service may not be relevant to the materials presented in this website.
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