CUET · PHYSICS · PYQ PAPER 2023
The impurity atoms with which pure silicon may be doped to make it a p-type semiconductor are those of
A. Phosphorous
B. Boron
C. Antimony
D. Aluminum
E. Graphite
Choose the correct answer from the options given below:
- A B and D only
- B A and B only
- C C and E only
- D A and C only
Answer & Solution
Correct Answer
(A) B and D only
Step-by-step Solution
Detailed explanation
To create a p-type semiconductor, pure silicon (Group 14) must be doped with trivalent impurities (Group 13) like Boron (B) or Aluminum (D). These atoms have only three valence electrons, creating "holes" in the crystal lattice that act as majority charge carriers. A) B and D…
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