Widegap
Widegap, also written wide-gap or wide-bandgap, is a descriptive term used in science and engineering to denote a material, device, or spectrum characterized by a relatively large gap between two related quantities. In technical literature it most often refers to a large electronic band gap in semiconductors, but can also describe large spectral or density-of-states gaps in photonics or spectroscopy. The exact threshold is context-dependent, and the term is less formal than its counterpart wide-bandgap, which is the standard phrase in solid-state physics.
In semiconductor physics, wide-gap materials have band gaps larger than roughly 2 eV, which yields low intrinsic
Outside electronics, the idea of a wide gap appears in spectroscopy and optics, where materials with wide