Grade 12Inorganic Chemistry

Give 4 differences between zener breakdown and avalanche breakdown.

Sarasij Basu Mallick

9 Years agoGrade 12

3 Answers

Vikas TU

9 Years ago

Zener Breakdown => occurs when the doping concentration is found to be high.

=> The depletion region becomes more wider.

=> Quantumm tunneling process occurs.

=> Reverse breakdown voltage is less than 5V – 6V.

Avalanche Breakdown => Occurs when the reverse bias voltage is high.

=> Depletion region gets widen.

=> Electrons gets knocked off from the valency band after getting the high potential.

=> Impact Ionization process is the basic principle upon it works.

utpal raj

9 Years ago

hiiii sarasij

the differences are

zener breakdown : zener current is independent of applied voltage.

2 strong electric field is produced

3.large no of holes and e- are produced

4.PN junction are heavily doped

avalanche breakdown : 1.charge carrier acquire energy from applied pot.

2.electric field is weak in nature

3.electric holes pair are generated

4.PN junction are lightly doped .

please aproove

good luck

Sowmya bysani

9 Years ago

Zener breakdown :due to high doping of p-n junction diode.2)takes place at low reverse bias voltage 3)rupture of covalent bonds tales place in depletion layer because of high electric field acquire sufficient energy from potential. Avalanche breakdown:1) possible at high and low doping 2)takes place at reverse bias voltage 3) disruption of bonds takes place because of thermally generated electrons and holes