To jump from the valence band to the conducting band, the electron needs to reach the energy level of the conducting band, jumping the band gap where no electrons can exist. In silicon ...

Type-II heterojunctions have a staggered band alignment, where the conduction and valence bands of the two semiconductors ... For example, strained silicon/germanium heterojunctions have been utilized ...

Ultrawide-bandgap semiconductors—such as diamond—are promising for next-generation electronics due to a larger energy gap between the valence and conduction bands, allowing them to handle ...