Drift current and diffusion current are two fundamental mechanisms of charge transport in semiconductors. These concepts form the basis of semiconductor physics and are extremely important for understanding the operation of devices such as p-n junction diodes, transistors, LEDs, solar cells, MOSFETs, and integrated circuits. In semiconductors, electric current is produced not only by the […]
In this article, we will explore intrinsic semiconductors, including their definition, crystal structure, energy band diagram, characteristics, advantages, disadvantages, and applications. An intrinsic semiconductor is a pure semiconductor material without any significant impurity atoms added to it. In intrinsic semiconductors, the number of free electrons and holes are naturally generated due to thermal energy and […]
Energy band theory of solids explains why some solids conduct electricity easily, why some do not, and why others behave in-between. Classical physics could not explain electrical conduction fully, but quantum mechanics and band theory together provide a complete picture. Solids are materials in which atoms are closely packed in a regular or irregular arrangement. […]