Bandgap engineering strategy through chemical strain and oxygen vacancies in super-tetragonal BiFeO<sub>3</sub> epitaxial films
Jiaqi Ding, Hangren Li, Guoqiang Xi, Jie Tu, Jianjun Tian, Linxing Zhang
Abstract
Tetragonality increase and bandgap reduction in super-tetragonal BFO-based films are simultaneously obtained through chemical strain and oxygen vacancies, due to the reduced the bottom of conduction band confirmed by DFT calculations.
Topics & Concepts
Tetragonal crystal systemMaterials scienceBand gapStrain (injury)Conduction bandOxygenEpitaxyStrain engineeringCondensed matter physicsCrystallographyOptoelectronicsNanotechnologyCrystal structureChemistryOrganic chemistryElectronLayer (electronics)PhysicsMedicineQuantum mechanicsSiliconInternal medicineMultiferroics and related materialsFerroelectric and Piezoelectric MaterialsGa2O3 and related materials