Types of Current in Semiconductors
The two types of current in semiconductors are:
- Drift Current
- Diffusion Current
Drift Current
When an external electric field is applied across semiconductor the velocity of the charged particles increases and the particle starts drifting in the resultant direction. This velocity of charged particle drift is called as the drift velocity and the current produced is called the drift current.
Diffusion Current
In doped semiconductor, the movement of charged particles from higher density to lower density is called diffusion current. The diffusion current flows until the particles are distributed uniformly.
Types of Current
The movement of charged particles within a conducting medium is generally referred to as current. The term “charged particles” in relation to electricity primarily refers to electrons. The conducting material’s atoms have free electrons that can travel from one atom to another. The electrons move in a random manner. Alternating and direct current are the two main forms of current.
In alternating current, the current’s direction is reversed, whereas in direct current, electrons flow in one direction. In batteries, you can find direct current. In a battery, the electron always moves from the negative side to the positive side. Alternating current, on the other hand, can be used in televisions, kitchen appliances, etc.
Table of Content
- What is Current?
- Various Types of Current
- Direct Current
- Alternating Current
- Steady Current
- Varying Current
- Instantaneous Current
- Electric Current Applications
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