Tuning the photovoltaic effect of multiferroic CoFe2O4/Pb(Zr, Ti)O3 composite films by magnetic fields

Pan, Danfeng; Chen, Guangyi; Bi, Gui-Feng; Zhang, Hao; Liu, Jun‐Ming; Wang, Guanghou; Wan, Jing

doi:10.1063/1.4953154

Cited by 12 publications

(3 citation statements)

References 32 publications

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“…S3, Supplementary Information). The observed magnetic field induced change in the photocurrent corresponds to ~123% enhancement in the photocurrent which is significantly higher compared to earlier published works on the magnetic field effect on the photocurrents 5,6 as well as other effects on the photocurrents (Table S1, Supplementary Information). Figure 2c shows the chronoamperometry results of CoFe 2 O 4 nanostructure films at a fixed potential of 1.23 V (vs. RHE) in the presence of magnetic fields of different strength.…”

Section: Resultscontrasting

confidence: 51%

“…Pan et al . 6 demonstrated an indirect approach for the magneto-tuning of the photocurrents using magnetic/semiconductor CoFe 2 O 4 /PbZrTiO 3 composite system. A~13.7% magneto-tuning of the photocurrent under 0.6 T magnetic field is observed which is attributed to the band structure reconstruction due to interfacial stress experienced by PbZrTiO 3 under applied magnetic field.…”

Section: Introductionmentioning

confidence: 99%

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Low field magneto-tunable photocurrent in CoFe2O4 nanostructure films for enhanced photoelectrochemical properties

Singh¹,

Khare²

2018

Sci Rep

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Efficient solar to hydrogen conversion using photoelectrochemical (PEC) process requires semiconducting photoelectrodes with advanced functionalities, while exhibiting high optical absorption and charge transport properties. Herein, we demonstrate magneto-tunable photocurrent in CoFe2O4 nanostructure film under low applied magnetic fields for efficient PEC properties. Photocurrent is enhanced from ~1.55 mA/cm2 to ~3.47 mA/cm2 upon the application of external magnetic field of 600 Oe leading to ~123% enhancement. This enhancement in the photocurrent is attributed to the reduction of optical bandgap and increase in the depletion width at CoFe2O4/electrolyte interface resulting in an enhanced generation and separation of the photoexcited charge carriers. The reduction of optical bandgap in the presence of magnetic field is correlated to the shifting of Co2+ ions from octahedral to tetrahedral sites which is supported by the Raman spectroscopy results. Electrochemical impedance spectroscopy results confirm a decrease in the charge transfer resistance at the CoFe2O4/electrolyte interface in the presence of magnetic field. This work evidences a coupling of photoexcitation properties with magnetic properties of a ferromagnetic-semiconductor and the effect can be termed as magnetophototronic effect.

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Section: Resultscontrasting

confidence: 51%

Section: Introductionmentioning

confidence: 99%

Low field magneto-tunable photocurrent in CoFe2O4 nanostructure films for enhanced photoelectrochemical properties

Singh¹,

Khare²

2018

Sci Rep

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“…Later in 2016, Pan et al demonstrated the tuning of the PV effect in multiferroic CoFe 2 O 4 -PZT (CFO − PZT) composite films using a magnetic field [181]. They observed a change in the J SC and V OC from the device composed of CFO-PZT composite film with different magnetic field strengths.…”

Section: Magneto-photovoltaics (Pvs)mentioning

confidence: 99%

A review on ferroelectric systems for next generation photovoltaic applications

Pal¹,

Sarath²,

Priya³

et al. 2022

J. Phys. D: Appl. Phys.

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Ferroelectric materials, a non-centrosymmetric crystal system with switchable polarization characterization, are known to show multifunctional application potential in various fields. Among them, the ferroelectric photovoltaic phenomenon, which is known for several decades, is finding renewed interest in recent times due to its anomalous photovoltaic characteristics along with the reported efficiency exceeding Shockley–Queisser limit in the nanoscale region. Importantly, the mechanism involved in the ferroelectric photovoltaic effect is particularly different from the conventional photovoltaic effect exhibited by the semiconductor p–n junction solar cell. The observed above bandgap photovoltage in the ferroelectric system, and the versatility in their tunable physical characteristics makes them as one of the next generation photovoltaic materials both in terms of fundamental and technological research. However, the biggest barrier in developing the ferroelectric photovoltaic solar cell is their very low photocurrent response, which could be surmounted by bandgap engineering, surface charge manipulation, interface control, electrode effect etc. Interestingly, the photovoltaic response coupled with other physical phenomena such as piezoelectric and flexoelectric effects gives additional momentum to the continuing research on ferroelectric photovoltaic effect. In this article, the detailed understanding associated with various proposed mechanisms, recent progress on the improvement in ferroelectric photovoltaic parameters, photovoltaic phenomenon coupling with other fascinating effects exhibited by ferroelectric systems are described from the fundamental to application point of view.

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Optical tunability of magnetoimpedance properties in La0.7Sr0.3MnO3-Glass nanocomposites: a signature of Opto-spintronics

Ghosh,

Deb,

Dey

2024

Appl. Phys. A

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Tuning the photovoltaic effect of multiferroic CoFe2O4/Pb(Zr, Ti)O3 composite films by magnetic fields

Cited by 12 publications

References 32 publications

Low field magneto-tunable photocurrent in CoFe2O4 nanostructure films for enhanced photoelectrochemical properties

Low field magneto-tunable photocurrent in CoFe2O4 nanostructure films for enhanced photoelectrochemical properties

A review on ferroelectric systems for next generation photovoltaic applications

Optical tunability of magnetoimpedance properties in La0.7Sr0.3MnO3-Glass nanocomposites: a signature of Opto-spintronics

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