TS EAMCET · Physics · Semiconductors
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
Answer & Solution
Correct Answer
(A) the hole concentration decreases and electron concentration increases
Step-by-step Solution
Detailed explanation
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. Thus option (1) is correct answer.
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