. A diode which has zero breakdown voltage is known as-
(a) schottky diode
(b) tunnel diode
(c) backward diode
(d) zener diode
Answers
Answer:
The diode which has zero breakdown voltage is. Tunnel diode.
Answer:
Tunnel Diode has zero breakdown voltage.
Explanation:
A tunnel diode (also called an Esaki diode) is a type of semiconductor diode that effectively has "negative resistance" due to a quantum mechanical effect called tunneling. Tunnel diodes have a high density pn junction with a width of about 10 nm. High concentration doping breaks the band gap and the electronic state of the conduction band on the N side almost matches the hole state of the valence band on the P side.
Transistor applications in the very high frequency range are hampered by transit time and other effects. Many devices take advantage of the negative conduction properties of semiconductors for these high frequency applications. Tunnel diodes are one of the most widely used negative conduction devices. Due to his study of this work, L. is also known as Esaki diode after Esaki.
The impurity concentration in both the p and n regions is very high, around 1024-1025 m-3. The pn junction is also fast. For this reason, the width of the discharge layer is very narrow. The current-voltage characteristics of tunnel diodes can find a negative slope region when forward biased.
The name "tunneling diode" comes from the fact that quantum mechanical tunneling is the cause of the phenomenon that occurs inside a diode. The doping is so high that the Fermi level is at absolute zero in the semiconductor bias.
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