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A perfect crystal of silicon (fig) is doped with some elements as given in the options. Which of these options shows n -type semiconductors?
 

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detailed solution

Correct option is A

When group l5 elements are doped into a perfect crystal of Si, it leads to the formation of n -type semiconductor.Here, in (a) As (group 15, period 3) is doped to perfect Si crystal and in (c) P (group 15, period 2) is doped to perfect Si-crystal.

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Similar Questions

Match the items given in Column I with the items given in Column II.
 

 Column I Column II
A.Mg in solid state1.p -type semiconductor
B.MgCl2 in molten state2.n-type semiconductor
C.Silicon with phosphorus3.Electrolytic conductor
D.Germanium with boron4.Electronic conductor


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