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DOPING
PN JUNCTION CONSTRUCTION

Neets Module 07-Introduction to Solid-State Devices and Power Supplies
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1-38 free electrons). Since this type of semiconductor has a surplus of electrons, the electrons are considered the majority current carriers, while the holes are the minority current carriers. A P-TYPE SEMICONDUCTOR is one which is doped with a P-TYPE or acceptor impurity (an impurity that reduces the number of free electrons causing more holes). The holes in this type semiconductor are the majority current carriers since they are present in the greatest quantity while the electrons are the minority current carriers. The SEMICONDUCTOR DIODE, also known as a PN JUNCTION DIODE, is a two-element semiconductor device that makes use of the rectifying properties of a PN junction to convert alternating current into direct current by permitting current flow in only one direction.






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