A) p-type
B) n-type
C) Both [a] and [b]
D) None of the above
Correct Answer: A
Solution :
n-type semiconductor crystal has freely moving (negative) electrons and an equal number of stationary positively charged donor ions. The crystal as a whole is neutral while in p-type semiconductor crystal has freely moving (positive) holes and an equal number of stationary negatively charged acceptor ions. Hence, p-type semiconductor material has fewer free electrons.
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