Which of the following materials could be classified as an n-type semiconductor?
A)C doped with Ga
B)Ge doped with Sn
C)Se doped with Sb
D)Si doped with As
E)None of these are n-type semiconductors.

Question

Quizplus · Accepted Answer

N-type semiconductors are created by doping an intrinsic semiconductor with impurities that have extra valence electrons. As a result, in D, As (arsenic) has five valence electrons and substitutes into Si's (silicon) crystal structure, forming an extra electron for conductivity. A p-type semiconductor is formed by doping with an impurity that has one fewer valence electrons, as opposed to an n-type semiconductor.

Which of the Following Materials Could Be Classified as an N-Type