Description: Atomic Structures History of Semiconductor: - Electron Shells and Orbits: In an atom, the orbits are group into energy bands – shells. Diff. in energy level within a shell << diff.
an energy between shells. Energy increases as the distance from the nucleus increases. Valence Electrons: Electrons with the highest energy levels exist in the outermost shell.
The electron in the valence shell called valence electrons. The term valence is used to indicate the potential required to removed any one of these electrons.