High mobility ultrathin ZnO p–n homojunction modulated by Zn0.85Mg0.15O quantum barriers |
(color online) Geometric structures of ZnO p–n junctions with or without ZnMgO ADB: (a) S-series p–n junctions without ZnMgO ADB; (b) Q p–n junctions with ZnMgO ADB. |