Typical semiconductors like silicon have a bandgap in the range of 1 - 1.5 electronvolt ( eV ) , .
Wide - bandgap materials have bandgaps in the range of 2 - 4 eV .
Typical semiconductors like silicon have a bandgap in the range of 1 - 1.5 electronvolt ( eV ) , whereas wide - bandgap materials have bandgaps in the range of 2 - 4 eV .