KCET · Physics · Semiconductors
An n-type and p-type semiconductor can be obtained by respectively doping pure silicon with
- A Arsenic and Phosphorous respectively
- B Indium and Aluminium respectively
- C Phosphorous and Indium respectively
- D Aluminium and Boron respectively
Answer & Solution
Correct Answer
(C) Phosphorous and Indium respectively
Step-by-step Solution
Detailed explanation
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
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