A p-n junction is formed by joining p-type and n-type semiconductors, creating a barrier that controls electron and hole flow for diodes, transistors, and solar cells.

The PN junction is one of the primary building blocks of semiconductors. Diodes and Thyristors A diode (one way valve) is a PN junction with p-type on one side and n-type on the other.

We report the realization of an ultraviolet light-emitting diode with the use of a diamond pn junction. The pn junction was formed from a boron-doped p-type diamond layer and phosphorus-doped n-type ...