The semiconductor has an “indirect” electronic band gap, which means that electronic transitions between the material’s valence and conduction bands involve vibrations in the crystal lattice. As a ...

Researchers have identified novel 2D wide-band-gap semiconductors with high stabilities, namely monolayer arsenene and antimonene. These materials are indirect wide-band-gap semiconductors, and under ...

In direct-gap semiconductors the crystal momentum of electrons in the valence and conduction bands match. By contrast, electrons in the conduction band of indirect-gap semiconductors such as silicon ...

Discovery of non-toxic semiconductors with a direct band gap in the near-infrared. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2021 / 03 / 210323103829.htm ...

Gallium phosphide (GaP) is a polycrystalline compound semiconductor that appears pale orange and has an indirect band gap of 2.26 eV. Single crystal wafers that are not doped have a clear orange color ...

The materials go from being indirect band-gap semiconductors in the bulk, to direct band-gap semiconductors when scaled down to monolayer thickness. These monolayers efficiently absorb and emit light, ...

Fig. 1: Diagram showing the transition from a direct band gap (black) to an indirect gap (white) in a graphene nanoribbon depending on the voltage applied to the left (V L) and right (V R) edges ...