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pn-junctions

Synonyms: p-n junctions, pn junctions

reegle definition:

A p–n junction consists of two joining P-type and N-type semiconductors in close contact. The junction is the boundary interface where the semiconductor meet.

A p?n junction consists of two joining P-type and N-type semiconductors in close contact. The junction is the boundary interface where the semiconductor meet.

Wikipedia definition:

A p–n junction is a boundary or interface between two types of semiconductor material, p-type and n-type, inside a single crystal of semiconductor. It is created by doping, for example by ion implantation, diffusion of dopants, or by epitaxy (growing a layer of crystal doped with one type of dopant on top of a layer of crystal doped with another type of dopant). If two separate pieces of material were used, this would introduce a grain boundary between the semiconductors that severely inhibits its utility by scattering the electrons and holes. p–n junctions are elementary "building blocks" of most semiconductor electronic devices such as diodes, transistors, solar cells, LEDs, and integrated circuits; they are the active sites where the electronic action of the device takes place. For example, a common type of transistor, the bipolar junction transistor, consists of two p–n junctions in series, in the form n–p–n or p–n–p. The discovery of the p–n junction is usually attributed to American physicist Russell Ohl of Bell Laboratories. A Schottky junction is a special case of a p–n junction, where metal serves the role of the p-type semiconductor.

Source: dbpedia

 

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