NEET Solved Paper 2014 Question 45
Question: The barrier potential of a p-n junction depends on
(i) type of semiconductor material
(ii) amount of doping
(iii) temperature
Which one of the following is correct? [AIPMT 2014]
Options:
A) (i) and (ii) only
B) (ii) only
C) (ii) and (iii) only
D) (i), (ii) and (iii)
Show Answer
Answer:
Correct Answer: D
Solution:
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Barrier potential should depend on all the three options given. Barrier potential depends on the material used to make p-n junction diode (whether it is Si or Ge).
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It should also depends on amount of doping due to which the number of majority carriers will change.
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It should also depend on temperature due to number of minority carriers will change.
