Abstract
BiFe1-xMnxO3 (BFMO, x = 0–0.05) thin films were successfully deposited onto fluorine-doped tin oxide (FTO)/glass substrates via sol–gel technique. According to results obtained from XRD, Raman spectroscopy, SEM, and energy-dispersive EDS, it was found that films have rhomboid perovskite structure and Mn ions were successfully and uniformly incorporated into BiFeO3 (BFO) films. Doping process was accompanied by the reduction in grain size. From XPS pattern, it was found that both Fe2+ concentration and oxygen vacancies are reduced as a result of Mn doping. Compared with pure BFO samples, ferroelectric, dielectric, and optical properties of BFMO films are noticeably enhanced. BiFe0.96Mn0.04O3 film exhibited excellent remnant polarization (2Pr of 312 μC/cm2) accompanied by a low leakage current. Underlying mechanism can be explained in terms of Mn doping-induced structural transition, reduction in grain size, and oxygen vacancies. Additionally, increased bandgap (Eg = 2.68 eV) was obtained in BiFe0.98Mn0.02O3 film compared with BFO film (Eg = 2.58 eV). This work demonstrates remarkable effect of Mn doping on BFO, indicating that BFMO is promising candidate for ferroelectric photovoltaic device applications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
