question_answer

(i) What is the ratio of the number of holes and the number of conduction electrons in an intrinsic semiconductor?

(ii) How does the energy gap in an intrinsic semiconductor vary when doped with a pentavalent impurity?

(iii) Draw / versus V graph of a forward biased junction diode.

Answer:

(i) In an intrinsic semiconductor, the ratio of the number of holes and electrons is \[1:1.\]

(ii) When doped with pentavalent impurity, it becomes n-type semiconductor.

            (iii) I versus V graph of a forward biased p-n junction diode