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Diffusion Conditions
Indiffusing Dopant Type
Diffusion Type
xj (μm)
buried layer x (μm)
Nsurface (cm-3)
Nc (cm-3
Solution
avg σ (Ω-cm)-1 =   
Rs (Ω/sq) =   

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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