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Download fileRegulation of Photovoltaic Response in ZSO-Based Multiferroic BFCO/BFCNT Heterojunction Photoelectrodes via Magnetization and Polarization
journal contribution
posted on 2021-07-26, 15:03 authored by Kaixin Guo, Rongfen Zhang, Zhao Fu, Liangyu Zhang, Xu Wang, Chaoyong DengMultiferroic
devices have attracted renewed attention in applications
of photovoltaic devices for their efficient carrier separation driven
by internal polarization, magnetization, and above-bandgap generated
photovoltages. In this work, Zn2SnO4-based multiferroic
Bi6Fe1.6Co0.2Ni0.2Ti3O18/Bi2FeCrO6 (BFCNT/BFCO)
heterojunction photoelectrodes were fabricated. Structural and optical
analyses showed that the bandgap of the spinel Zn2SnO4 is ∼3.1 eV while those of Aurivillius-type BFCNT and
double-perovskite BFCO are 1.62 and 1.74 eV, respectively. Under the
simulated AM 1.5G illumination, the as-prepared photoelectrodes delivered
a photoconversion efficiency (η) of 3.40% with a short-circuit
current density (Jsc), open-circuit voltage
(Voc), and fill factor (FF) of 10.3 mA·cm–2, 0.66 V, and 50.4%, respectively. Analyses of adjustment
of an applied electric and magnetic field on photovoltaic properties
indicated that both magnetization and polarization of multiferroics
can effectively tune the built-in electric field and the transport
of charge carriers, providing a new idea for the design of future
high-performance multiferroic oxide photovoltaic devices.
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Keywords
magnetizationphotovoltaic propertiesBiPhotovoltaic Responsemultiferroic oxide photovoltaic devicescharge carriersAurivillius-type BFCNTcarrier separation0.66 Vas-prepared photoelectrodesspinel Zn 2 SnO 41.74 eVFFdouble-perovskite BFCOZn 2 SnO 40.2photovoltaic devicespolarizationAM 1.5 G illuminationPolarization Multiferroic devices