To clarify this concept, let’s consider the crystal structure of any of the semiconductor. Now lets take the example of germanium crystal. In germanium crystal covalent bonding is present between…
The cause of electrical conduction in semiconductors is due to the movement of the holes in the valence band and the movement of the electrons in the conduction band. When…
Those semi conductors in which impurities are missing are known as intrinsic semiconductors. The electrical conductivity of the semiconductor depends upon the total no of electrons shifted to the conduction…
Point defect means missing of the atoms in the crystal, from the lattice site. In a crystal atoms all the ions, atoms, and molecules are perfectly arranged in a three…
Doping is the process of adding some impurity atoms in the semi conductor. These impurity atoms are known as dopants. After addition of these dopants some of the properties of…
Those semiconductors in which some impurity atoms are embedded are known as extrinsic semiconductors. Extrinsic semi conductors are basically of two types: 1. P-type semi conductors 2. N-type semi conductors…
Metals are good conductors of electricity. Insulators are bad conductors of electricity. Similarly, semiconductor devices are partial conductors of electricity means their conductivity lies between conductors and insulators. Let’s discuss…
As we know that the forbidden energy gap in case of semiconductors is very small. At the temperature of zero Kelvin no electron will leave the valence band. So, conduction…
Adsorption: The phenomenon of attracting and retaining the molecules of a substance on the surface of a liquid or a solid resulting into a higher concentration of the molecules on…
Difference between physical adsorption and chemisorption are as following: PHYSICAL ADSORPTION CHEMISORPTIONS The forces operating in these are weak vander Waal’s forces. The forces operating in these cases are similar…
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