What is Valence and conduction bands as used in electronics?
Valence and conduction bands.-Valence band is the highest range of electron energies where electrons are normally present at zero temperature. Conductionband is the range of electronenergy higher than that of the valence band sufficient to make electrons free (delocalized); responsiblefor transfer of electric charge. Insulators and semiconductors have a gap above valence band followed by conduction band above it. Inmetals, the conduction band is the valence band.