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A zener diode has a contact potential of...

A zener diode has a contact potential of 1 V in the absence of biasing. It undergoes Zener breakdown for an electric field of `10^(6)` V/m at the depletion region of p-n junction. If the width of the depletion region is 2.5 `mu`m, what should be the reverse biased potential for the Zener breakdown to occur ?

A

`3.5` V

B

`2.5` V

C

`1.5` V

D

`0.5` V

Text Solution

Verified by Experts

The correct Answer is:
B
`E=10^(6)V//m,d=2.5xx10^(-6)m`
`V_("breakdown")=Exxd=10^(6)xx2.5xx10^(-6)=2.5` V .
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