Q208 / 240 · KCET 2026 · Physics
An n-type and p-type semiconductor can be obtained by respectively doping pure silicon with
- AArsenic and Phosphorous respectively
- BIndium and Aluminium respectively
- Correct answerCPhosphorous and Indium respectively
- DAluminium and Boron respectively
Solution
Pure silicon is a Group 14 element.
An n-type semiconductor is obtained by doping pure silicon with a pentavalent impurity (Group 15 element) such as Phosphorous, Arsenic, Antimony, or Bismuth.
A p-type semiconductor is obtained by doping pure silicon with a trivalent impurity (Group 13 element) such as Boron, Aluminium, Gallium, or Indium.
Thus, doping with Phosphorous gives an n-type semiconductor and doping with Indium gives a p-type semiconductor.
Answer: Phosphorous and Indium respectively
An n-type semiconductor is obtained by doping pure silicon with a pentavalent impurity (Group 15 element) such as Phosphorous, Arsenic, Antimony, or Bismuth.
A p-type semiconductor is obtained by doping pure silicon with a trivalent impurity (Group 13 element) such as Boron, Aluminium, Gallium, or Indium.
Thus, doping with Phosphorous gives an n-type semiconductor and doping with Indium gives a p-type semiconductor.
Answer: Phosphorous and Indium respectively
Hence, the correct answer is option: 'C'.