PN Junctions
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May 1, 2024
3 minute read
PN junctions are semiconductor devices formed by joining two pieces of semiconductor material with opposite types of electrical conductivity. PN junctions are used in a wide variety of electronic devices, including diodes, transistors, solar cells, and light-emitting diodes (LEDs). PN junctions form when a P-type semiconductor with positive charge carriers is brought into contact with an N-type semiconductor with negative charge carriers. The resulting structure creates a region of depletion, where charge carriers are depleted from the region near the junction. This depletion region forms the basis of the PN junction's electrical properties.
Semiconductor Materials
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