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Is graphene a semiconductor?
What is a bandgap?
Bandgap is the energy range that exists between the valence band and conduction band in a material. In semiconductors, electrons can be excited from the valence band to the conduction band by absorbing energy, creating mobile charge carriers. The size of the bandgap determines how much energy is needed to create a mobile charge carrier, and this can have implications for the functionality of electronic devices that use the material.