Types of Semiconductor
Semiconductors can be classified into two types on the basis of purity:
- Intrinsic Semiconductors
- Extrinsic Semiconductors
Intrinsic Semiconductors
Intrinsic Semiconductors are the pure semiconducting materials without any added impurity. No doping is done in this type of semiconductor materials. Intrinsic Semiconductor include elements from Group 4 of the Periodic Table. The mostly used elements for intrinsic semiconductor are Silicon and Germanium as they are tetravalent and bound to the covalent bond at 0 temperature. But s the temperature increases then the atoms get unbounded and becomes mobile charge carriers by leave their places and thus creating a hole in that positioning. The conductivity is less and the number of electrons and holes become equal.
Total current (I) = Ih + Ie
The Lattice of Pure Silicon Semiconductor at Different Temperatures
Given Below is the lattice bond theory of the Semiconductor
- Absolute Zero Kelvin Temperature: During this temperature the covalent bonds are strong with no free electrons which makes the semiconductor behave like a insulator.
- Above absolute temperature: By increasing the temperature, the valence bonds will go in conduction bond which will make the semiconductor behave as a poor conductor.
Semiconductors
A Semiconductor is a kind of material that performs conductivity between conductors and insulators and has a conductivity value that lies between the conductor and an insulator.
In this article, we will be going through semiconductors, first, we will start our article with the introduction of the semiconductor, then we will go through holes and electrons with band gap theory, and after that we will go through properties and types of semiconductors, At last, we will conclude our article with solved examples, applications and advantages with some FAQs.
Table of Content
- Holes and Electrons
- Direct and Indirect Band Gap Semiconductors
- Properties of Semiconductor
- Types of Semiconductor
- Intrinsic Vs Extrinsic Semiconductors
- Applications of Semiconductor
- Advantages of Semiconductor
- Disadvantages of Semiconductor
- Examples of Semiconductor
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