Energy band or energy band gap in solids is defined as the energy gap between the top of the valence band and bottom of the conduction band. The unit of the energy band gap is normally electron-volt (ev). It is denoted by the symbol Eg.
According to Bohr’s atomic model, the electrons revolving around the nucleus are governed by a definite path and hence have a definite energy level so the electrons in an atom have well-defined energy levels. Continue reading “Energy Band in a case of Solids”