How is a Zener Diode Fabricated? - Physics


How is a Zener diode fabricated?

Write two important considerations used while fabricating a Zener diode.


Solution 1

A Zener diode is fabricated by heavily doping both p and n sides of the junction

Solution 2

Two important considerations while fabricating a Zener diode are as follows:
(i) The Zener diode should be fabricated by heavily doping both and n junctions.
(ii) Proper wafer-handling devices must be used to avoid contamination, which may affect the quality and stability of the diode.

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2014-2015 (March) Panchkula Set 3


With the help of a neat circuit diagram, explain the working of a photodiode. 

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  1. its forward bias
  2. its reverse bias
  3. the band gap of the material of semiconductor
  4. its size

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(A) 0.5 nm to 1 nm

(B) 5 nm to 10 nm

(C) 50 nm to 500 nm

(D) 500 nm to 1000 nm


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