Electronics and Communication

When atoms are brought close together

When atoms are brought close together in a solid, their isolated energy levels split into closely-spaced bands. The valence band (VB) is formed from v

Pure semiconductors without any impurities

Pure semiconductors without any impurities are called intrinsic semiconductors. In silicon lattices, each atom has four valence electrons forming cova

Doping is the process of adding

Doping is the process of adding impurities to intrinsic semiconductors to increase charge carrier concentration. N-type semiconductors are created by

A p

A p-n junction is formed when p-type and n-type semiconductors are joined together. Diffusion of charge carriers creates a depletion region—a thin lay

Forward bias occurs when the positive

Forward bias occurs when the positive terminal is connected to the p-side and negative to the n-side. This reduces the barrier potential, narrows the