Select all suitable dopant atoms from the following list:
P
B
Mg
Ga
As
In
Sb
Al
Tl
H
P, As, Sb
As,Sb.Al donor dopant
thanks
The conduction band is at a higher energy than the valence band. True or false?
No electronic states lie between the conduction and valence bands in n-type silicon. True or false?
To determine the suitable dopant atoms from the given list, we need to consider the properties and characteristics of dopant atoms in semiconductor materials. Dopant atoms are used to modify the electrical and optical properties of semiconductors.
Dopant atoms are typically chosen based on their valence electron configuration and their ability to introduce impurities into the semiconductor lattice. The dopant atom should have either one more or one less valence electron compared to the host semiconductor atom.
In this case, we need to choose dopant atoms from the given list that can be used in semiconductors. Let's analyze each element:
P (Phosphorus) - Phosphorus is a common n-type (electron-donor) dopant in semiconductors.
B (Boron) - Boron is a common p-type (electron-acceptor) dopant in semiconductors.
Mg (Magnesium) - Magnesium is not commonly used as a dopant in semiconductors.
Ga (Gallium) - Gallium is not commonly used as a dopant in semiconductors.
As (Arsenic) - Arsenic is a common n-type dopant in semiconductors.
In (Indium) - Indium is not commonly used as a dopant in semiconductors.
Sb (Antimony) - Antimony is a common n-type dopant in semiconductors.
Al (Aluminum) - Aluminum is not commonly used as a dopant in semiconductors.
Tl (Thallium) - Thallium is not commonly used as a dopant in semiconductors.
H (Hydrogen) - Hydrogen is not commonly used as a dopant in semiconductors.
Based on the analysis, the suitable dopant atoms from the given list are:
- Phosphorus (P) for n-type doping.
- Boron (B) for p-type doping.
- Arsenic (As) for n-type doping.
- Antimony (Sb) for n-type doping.
Magnesium (Mg), Gallium (Ga), Indium (In), Aluminum (Al), Thallium (Tl), and Hydrogen (H) are not commonly used as dopants in semiconductors.
Therefore, the suitable dopant atoms from the given list are P, B, As, and Sb.