6533b836fe1ef96bd12a07ab

RESEARCH PRODUCT

Unification of the electrical behavior of defects, impurities, and surface states in semiconductors: Virtual gap states in CdO

P. H. JeffersonJesús Zúñiga-pérezTim D. VealChristopher F McconvilleVicente Muñoz-sanjoséPhil D. C. King

subject

Materials scienceDopantCondensed matter physicsbusiness.industryElectronic structureCondensed Matter PhysicsEpitaxyElectronic Optical and Magnetic MaterialsCondensed Matter::Materials ScienceSemiconductorElectrical resistivity and conductivityImpurityAtomic physicsbusinessElectronic band structureSurface states

description

In contrast to conventional semiconductors, native defects, hydrogen impurities, and surface states are all found to be donors in $n$-type CdO. Using this as a model system, the electrical behaviors of defects, dopants, and surface states in semiconductors are unified by a single energy level, the charge neutrality level, giving much insight into current materials and allowing a band-structure engineering scheme for obtaining desired custom electronic properties in new compound semiconductors.

https://doi.org/10.1103/physrevb.79.035203