PN Junction

01 Fundamentals & Device Physics

Definition

A PN junction is the interface between adjacent p-type and n-type semiconductor regions, where carrier diffusion forms a depletion region and built-in electric field.

Application

Used as the rectifying junction in diodes and as a fundamental junction structure in transistors, photodiodes, solar cells, and other semiconductor devices.

Related search terms

p-n junction; P-N junction

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Related concepts

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