Which of the following can be used as an n-type dopant for silicon?
Select the correct option(s).
Select the correct option(s).
Show Hint
- Arsenic
- Boron
- Gallium
- Phosphorous
The Correct Option is A, D
Solution and Explanation
Arsenic is a Group V element, which has five valence electrons. When it is used as a dopant in silicon, it donates one electron to the conduction band, making it an n-type dopant.
(B) Boron:
Boron is a Group III element, which has three valence electrons. It creates a "hole" in the silicon structure, making it a p-type dopant.
(C) Gallium:
Gallium is also a Group III element, like Boron, and behaves in a similar way by creating holes in the silicon lattice, making it a p-type dopant.
(D) Phosphorous:
Phosphorous is a Group V element, which has five valence electrons. Like Arsenic, it can donate an electron to the conduction band, making it an n-type dopant.
Thus, the correct answers are (A) Arsenic and (D) Phosphorous.
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