Band structures Valence Band(Bonding orbitals in Mo) Conduction Band(Nonbonding orbitals in MO Band gap(Ea Fermi energy(in metal) Conduction conduction Conductor Valence Band Eg -0 Semiconductor =Vacant states insulator Metal □=0 coupled sites Insulator @995 CHP 33 3 Band Structures ⚫ Valence Band (Bonding orbitals in MO) ⚫ Conduction Band (Nonbonding orbitals in MO) ⚫ Band gap (Eg ) ⚫ Fermi energy (in metal) 3