Figure 5
From: Radiative recombination of confined electrons at the MgZnO/ZnO heterojunction interface
Schematic band diagram of the MgZnO/ZnO heterostructure, showing the recombination channels responsible for the emissions in the bilayer film. Dotted lines represent the excitonic transitions accounting for the observed NBE emissions in ZnO and MgZnO. The H-band arises from the recombination of electrons confined within the triangular quantum well with holes located in the flat-band region of the ZnO valence band.
