Home Physics Semiconductor Electronics Telangana & AP CET Previous Year Question When a semiconductor is doped with donor imp…
Physics Semiconductor Electronics Telangana & AP CET Previous Year Question MCQ (Single Correct)

When a semiconductor is doped with donor impurity

A
the hole concentration decreases and electron concentration increases
B
the hole concentration increases and electron concentration decreases.
C
both hole concentration and electron concentration increase
D
both hole concentration and electron concentration decrease

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Text Solution

Verified by Experts
The correct answer is:
A

Donor impurity gives extra electron to the atom which is present in its outer shell.
Thus when these type of impurity is added, the concentration of electron increases while that of holes decreases.

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