Addition of trivalent impurity to a semiconductor creates many
A. Holes
B. Free electrons
C. Valence electrons
D. Bound electrons
Answer: Option A
This Question Belongs to Electrical Engineering >> Semiconductor Theory
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The strength of a semiconductor crystal comes from
A. Forces between nuclei
B. Forces between protons
C. Electron-pair bonds
D. None of the above
The impurity level in an extrinsic semiconductor is about of pure semiconductor.
A. 10 atoms for 108 atoms
B. 1 atom for 108 atoms
C. 1 atom for 104 atoms
D. 1 atom for 100 atoms
A hole and electron in close proximity would tend to ___________
A. Repel each other
B. Attract each other
C. Have no effect on each other
D. None of the above
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