
p and n-type semiconductors are formed due to
A) Covalent bonds
B) Metallic bonds
C) Ionic bonds
D) Co-ordinate bond
Answer
163.5k+ views
Hint: A semiconductor defines a substance whose conduction rate lies between insulator and conductor. Its conductivity is less than a conductor. But its conductivity is more than an insulator.
Complete step by step solution:Let’s discuss some of the differences of n-type and p-type semiconductors are,
In a semiconductor, the bond forms are covalent bonds. Covalent bonds are formed due to the share of electrons between the atoms.
Therefore, option A is right.
Note: The semiconductors are very useful in industries because they can conduct electricity under certain conditions, that means, the electric current through it can be controlled. Some examples of semiconductors are gallium, arsenide, silicon, germanium etc.
Complete step by step solution:Let’s discuss some of the differences of n-type and p-type semiconductors are,
n-type semiconductor | p-type semiconductor |
1) In this type of semiconductor, impurities namely arsenic, antimony, bismuth etc. are added. | 1) In this type, impurities namely aluminum, indium, gallium (all have three electrons in the valence shell) are added. |
2) In this type, the addition of impurities occurs which increases the electron counts. | 2) In this type, impurities cause the increase of the hole number. |
3) In this type, free electrons carry the majority of charge but holes are in minority. | 3) In this type, majority charges are carried by holes and free electrons are in minority. |
4) In this type, charge carriers move from low potential to high potential. | 4) In this type of semiconductor, the movement of charge carriers from high potential to low potential occurs. |
5) In this type, the donor energy level is closer to the conduction band. | 5) In this type, the acceptor energy level is close to the conduction band. |
In a semiconductor, the bond forms are covalent bonds. Covalent bonds are formed due to the share of electrons between the atoms.
Therefore, option A is right.
Note: The semiconductors are very useful in industries because they can conduct electricity under certain conditions, that means, the electric current through it can be controlled. Some examples of semiconductors are gallium, arsenide, silicon, germanium etc.
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