2. Elementary structures. Fundamental effects
The properties of semiconductor structures used in power components are essentially the unidirectional conduction of PN junctions and metal/Schottky semiconductor contacts, and the three effects that control and interrupt the flow of current in a semiconductor:
PNP or NPN bipolar transistor effect ;
MOS field effect (metal/oxide/semiconductor) ;
junction field effect.
2.1 PN junction
A PN junction is the transition, in a single crystal, between two regions of opposite type. Equipped with ohmic contacts, this structure offers a non-linear current/voltage characteristic that can be directly exploited in rectifier components (junction...
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Elementary structures. Fundamental effects
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