Which of the following has the metal-semiconductor junction
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Zener diodes
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Tunnel diodes
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Schottky diodes
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LEDs
C
Correct answer
Explanation
Schottky diodes have a metal-semiconductor junction, unlike regular p-n junction diodes. This gives them faster switching speeds and lower forward voltage drop. Zener, Tunnel, and LEDs all use p-n semiconductor junctions. The metal-semiconductor junction is key to Schottky diode operation.