NEET Physics Semiconducting Devices NEET PYQ-Semiconducting Devices

  • question_answer
    The barrier potential of a \[p-n\] junction depends on                                               [NEET 2014]
    (i) type of semiconductor material
    (ii) amount of doping temperature
    (iii) Which one of the following is correct?

    A)  (i) and (ii) only     

    B) (ii) only

    C)  (ii) and (iii) only 

    D) (i), (ii) and (iii)

    Correct Answer: D

    Solution :

    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). It should also depends on amount of doping due to which the number of majority carriers will change. It should also depend on temperature due to number of minority carriers will change.


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