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  4. A Zener diode undergoes breakdown for an electric field of 106Vm- 1 at the depletion region of p - n junction. If the width of the depletion region is 2.5 textμm , what should be the reverse-biased potential for the breakdown to occur?

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Q. A Zener diode undergoes breakdown for an electric field of $10^{6}Vm^{- 1}$ at the depletion region of $p$ - $n$ junction. If the width of the depletion region is $2.5 \, \text{μm}$ , what should be the reverse-biased potential for the breakdown to occur?

NTA AbhyasNTA Abhyas 2020Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

Reverse biased potential for the zener breakdown
$V_{r}=Ed=10^{6}\times 2.5\times 10^{- 6}=2.5$ volt