Position of holes in p-type semiconductors

This is where the holes formed because of acceptor impurities are situated. In summary, the holes in p-type semiconductors are located in the valence band due to the movement of electrons from the valence band to acceptor levels.
  • #1
dwellexity
25
0
where are the holes in the p-type semiconductor situated? in the conduction band or the valence band? i am talking about the holes formed because of the acceptor impurities, not the thermally generated ones.
 
Physics news on Phys.org
  • #2
The valence band. In an acceptor type doped crystal, The number of electrons in the conduction band is less than the number of holes in the valence band (which has to be equal unless doped).
 
  • #3
dwellexity said:
where are the holes in the p-type semiconductor situated? in the conduction band or the valence band? i am talking about the holes formed because of the acceptor impurities, not the thermally generated ones.
In p-type semiconductors, electrons move from valence band to acceptor levels and hence empty states (holes) remain in the valence band.
 

Related to Position of holes in p-type semiconductors

1. What is the purpose of holes in p-type semiconductors?

Holes in p-type semiconductors serve as charge carriers, allowing for the flow of current through the material. They are created when a dopant atom with fewer valence electrons than the semiconductor's base material is added, leaving behind an empty space that can attract and transport electrons.

2. How are the holes positioned in p-type semiconductors?

The holes in p-type semiconductors are randomly positioned throughout the material. They are not stationary and can move around within the crystal lattice, allowing for the flow of current.

3. What is the difference between holes in p-type semiconductors and electrons in n-type semiconductors?

Holes in p-type semiconductors are the absence of electrons, while electrons in n-type semiconductors are the presence of extra electrons. This difference in charge carriers allows p-type and n-type semiconductors to work together in creating a p-n junction, which is essential for many electronic devices.

4. Can the position of holes in p-type semiconductors be controlled?

Yes, the position of holes in p-type semiconductors can be controlled through the process of doping. By adding specific dopant atoms, the number and distribution of holes can be manipulated, allowing for the customization of the semiconductor's electrical properties.

5. How do the position of holes affect the conductivity of p-type semiconductors?

The position of holes plays a crucial role in determining the conductivity of p-type semiconductors. When a voltage is applied, the holes can move towards the positive side, creating a current flow. The more holes there are and the more freely they can move, the higher the conductivity of the material.

Similar threads

  • Atomic and Condensed Matter
Replies
5
Views
1K
  • Atomic and Condensed Matter
Replies
2
Views
2K
  • Atomic and Condensed Matter
Replies
4
Views
1K
  • Atomic and Condensed Matter
Replies
0
Views
370
  • Atomic and Condensed Matter
Replies
7
Views
904
  • Atomic and Condensed Matter
Replies
12
Views
2K
  • Atomic and Condensed Matter
Replies
1
Views
2K
  • Atomic and Condensed Matter
Replies
1
Views
1K
  • Atomic and Condensed Matter
Replies
2
Views
1K
  • Atomic and Condensed Matter
Replies
7
Views
1K
Back
Top