Enhancement of phase stability and optoelectronic performance of BiFeO₃thin filmsviacation co-substitution

Abstract

Compositional engineering of BiFeO3 can significantly boost its photovoltaic performance. Therefore, controlling site substitution and understanding how it affects the optical and electronic properties while achieving robust and stable phases...

Electrical and optical properties of thin-film bismuth ferrite

“…3). Estimates shown that for bismuth ferrite films obtained in argon and oxygen atmosphere in the initial state, the optical width of the forbidden band is about 2.7 eV, and after heat treatment in air at 550 • C for 60 minabout 2.3 eV, which is in the range of values given in the literature for oxide perovskites based on BiFeO 3 [27,28].…”

Control of up-to-down/down-to-up light-induced ferroelectric polarization reversal

“…The 60 nm BiFeO 3 film on LSMO buffered SrTiO 3 (001) substrate, described in the Supporting Information, was grown by chemical solution deposition. 51,52 Top Pt electrodes (20 nm thick, 55 μm in diameter) were deposited by sputtering through a stencil mask. Piezoelectric Force Microscopy.…”

Chemical synthesis of complex oxide thin films and freestanding membranes

“…83 Additions of 10% of lanthanum nitrate in BFCO precursor solution ensured the formation of reproducible epitaxial and pure phase La-BFCO films preserving the optical band gap and the ferroelectric properties. 79 X-ray absorption spectroscopy analysis supported by density functional theory revealed that the hybridization between Co 3d and O 2p determines the change in the optical bandgap being narrower with the coexistence of Co 2+ and Co 3+ oxidation states. The incorporation of La 3+ did not affect the electronic structure or the optical properties (see Fig.…”