What is Atomic Bonds and Types? Whether a material is a conductor, a semiconductor, or an insulator depends largely upon what happens to the outer-shell electrons when the atoms bond themselves together to form a…
Drift Current and Diffusion Current in Semiconductor: The two basic processes which cause electrons and holes to move in a semiconductor are : drift, which is the movement caused by electric fields, and diffusion, which…
Energy Band Diagram of Semiconductors, Insulators and Metals: Energy Band Diagram of Semiconductors, Insulators and Metals - As discussed earlier, the electrons of an isolated atom are acted upon only by the forces within that…
Energy Band Theory of Crystals: Energy Band Theory of Crystals - As discussed above, it is revealed that most metals and semiconductors are crystalline in structure and a crystal is made up of a space…
What is Crystalline Structure? What is Crystalline Structure? - Solids are characterized by incompressibility, rigidity and mechanical strength. This indicates that the molecules, atoms or ions that make up a solid are closely packed, i.e.,…
Compound Semiconductor Materials: Most of the compound semiconductor materials are formed from the combinations of group III and group V elements. A portion of the periodic table listing the more common semiconductors is given in…
Elemental Semiconductor Materials: Group IV includes five elements viz., Carbon (C), Silicon (Si), Germanium (Ge), Tin (Sn) and lead (Pb). The elements of this subgroup show marked similarity as well as gradation in properties with…
