bandgap

Scientific  

/ bănd′găp′ /

1. The difference in energy in a substance between electron orbitals in which the electrons are not free to move (the valence band) and orbitals in which they are relatively free and will carry a current (the conduction band). In semiconductors, some electrons are sustained in the conduction band by thermal energy. Energy released when an electron in the conduction band falls into a hole in the valence band is called bandgap radiation.

2. See also hole semiconductor laser

---

Example Sentences

This type of material is known as an "isotropic bandgap material."

From Science Daily

"Gyromorphs are unlike any known structure in that their unique makeup gives rise to better isotropic bandgap materials than is possible with current approaches," says Stefano Martiniani, an assistant professor of physics, chemistry, mathematics and neural science, and the senior author of the study.

From Science Daily

For decades, researchers have looked to quasicrystals when designing isotropic bandgap materials.

From Science Daily

During their analysis, the scientists observed that every isotropic bandgap material exhibited a shared structural signature.

From Science Daily

"The graphene sheets can be used to tune the bandgap of the semiconductors, making the semiconductor more or less responsive, depending on the quality of the graphene," says Julia Chang, first author of the paper and a postdoctoral researcher at NC State.

From Science Daily