Draw I-V characteristic of zener diode

Dear Student,
 

Zener diode: It is a diode meant to operate in the breakdown region. In a zener diode the breakdown occur by direct breaking of valance bonds due to high electric field. Large number of electron hole pairs created due to the breakdown takes part in conduction. Once the breakdown occurs, the potential difference across the diode doesn’t increase even if the applied battery potential is increased. Such diodes are used to obtain constant voltage output.

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