Physics · PN Junction Diode

In an open-circuited step-graded junction, the left-half of the bar is p-type with a constant concentration NA, whereas the right-half is n-type with a uniform density ND. What is the expression for the contact difference of potential V0?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

Correct answer

V0 = VT ln(NA ND / ni2)

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