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Chemistry · Glossary

What is p–n junction?

Also known as: p--n junction

Definition 22.12 University Chemistry — Year 3 · Chapter 22 — Solid-State Chemistry: Bands, Defects and Semiconductors

A p–n junction is the boundary, inside one crystal, between a p-type and an n-type region.

A single crystal of silicon pulled from the melt, shown beside a solar cell made from a slice of such a crystal. Photograph: Sebastian Wallroth, public domain.
A single crystal of silicon pulled from the melt, shown beside a solar cell made from a slice of such a crystal. Photograph: Sebastian Wallroth, public domain.
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