The discussion focuses on the characteristics of the depletion region in highly doped Zener diodes. It is established that as the doping level increases, the width of the depletion region decreases, resulting in a higher peak electric field for a given reverse bias voltage. This phenomenon leads to Zener breakdown occurring at lower voltages in highly doped diodes. The relationship between doping concentration and depletion width is critical for understanding Zener diode operation.
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The higher is the doping level then the narrower is the depletion region for any given reverse bias voltage. A narrower depletion region means that voltage is "blocked" over a shorter distance, meaning that the peak electric field is higher.Viswanathan.M said:In Zener Diode, In highly Doped diode,the breakdown(Zener breakdown) occurs in small voltage. How?