A band gap is the quantity of energy needed to move electrons and holes from the valence band to the conduction band.
Band gap refers to the amount of energy needed for electrons and holes to move from the valence band to the conduction band. A band gap of 1.12 eV is present in Si (Silicon) (electron volt).
The term "wide-band-gap semiconductor" refers to a semiconductor having a big value.
The energy gap between bonding and antibonding orbitals widens in proportion to the electronegativity difference. Since it affects a semiconductor's color and conductivity, the band gap is a crucial component of the semiconductor.
A semiconductor is a substance having a non-zero, intermediate-sized band gap that, while acting as an insulator at T=0K, enables thermal excitation of electrons into its conduction band at temperatures below its melting point. An insulator is a substance, in contrast, that has a wide band gap.
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