Are there specific and separate theoretical formulas for determining the depletion region thickness for a "PIN photodiode"?

16 April 2025 0 8K Report

In the literature, most theoretical formulas for calculating the depletion region thickness, capacitance, built-in voltage, and doping concentrations are derived for standard pn diodes. Can these formulas also be applied to PIN photodiodes?

If not, what is the appropriate approach to derive or adapt such formulas specifically for PIN photodiodes?

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