Fig. 3From: Tuning Electronic Properties of Blue Phosphorene/Graphene-Like GaN van der Waals Heterostructures by Vertical External Electric Fielda Eg vs Eext of monolayer-blue-P/g-GaN and bilayer-blue-P/g-GaN heterostructures. b–e The band structures of the monolayer-blue-P/g-GaN heterostructure with Eext of 0.3 eV/Å, 0.5 eV/Å, − 0.3 eV/Å, and 0.7 eV/Å. The EF is set to 0, and indicated by the red dashed lineBack to article page