Advertisements
Advertisements
Questions
How is a Zener diode fabricated?
Write two important considerations used while fabricating a Zener diode.
Advertisements
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 p and n junctions.
(ii) Proper wafer-handling devices must be used to avoid contamination, which may affect the quality and stability of the diode.
APPEARS IN
RELATED QUESTIONS
If a small voltage is applied to a p-n junction diode, how will the barrier potential be affected when it is(ii) reveres biased?
Using the necessary circuit diagrams, show how the V-I characteristics of a p-n junction are obtained in
Reverse biasing
How are these characteristics made use of in rectification?
Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to (Eg)C, (Eg)Si and (Eg)Ge. Which of the following statements is true?
Write briefly the important processes that occur during the formation of p−n junction. With the help of necessary diagrams, explain the term 'barrier potential'.
What happens to the width of depletion player of a p-n junction when it is (i) forward biased, (ii) reverse biased?
Write the important considerations which are to be taken into account while fabricating a p-n junction diode to be used as a Light Emitting Diode (LED). What should be the order of the band gap of an LED, if it is required to emit light in the visible range? Draw a circuit diagram and explain its action.
Explain photodiode.
Briefly explain how emf is generated in a solar cell.
What energy conversion takes place in a solar cell?
Identify the special purpose diodes 'A', 'B' and 'C' from the given symbols.

