Switchable ferroelectric photovoltaic effects

A substantial visible-light photovoltaic effect is observed in BiFeO 3 diode structures. These results should improve understanding of charge conduction mechanisms in leaky ferroelectrics and advance the design of switchable devices combining ferroelectric, electronic, and optical functionalities.
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Switchable Bulk Photovoltaic Effect in Intrinsically

Aug 19, 2024· Here we report that a popular all-inorganic halide perovskite nanocrystal, CsPbBr 3, exhibits a ferroelectricity-driven photovoltaic effect under visible light in the absence of an external electric field.

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Switchable Ferroelectric Diode and Photovoltaic Effect in BiFeO

Dec 8, 2008· Switchable Ferroelectric Diode and Photovoltaic Effect in BiFeO3 T. Choi, S. Lee,* Y. J. Choi, V. Kiryukhin, S.-W. Cheong† Unidirectional electric current flow, such as that found in a diode, is essential for modern electronics. It usually occurs at asymmetric interfaces such as p-n junctions or metal/semiconductor interfaces with Schottky

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Switchable Photovoltaic Effect in Ferroelectric CsPbBr3

2 external electric field.[1,2] Ferroelectric oxide perovskites[3] have shown potential applications in ferroelectric [random [access memories, 4] switchable ferroelectric diodes, 5,6] electromechanical transducers,[7–9 ][1non-volatile memories, 0,11] actuators,[12] and in the fields of high-K materials.[13 Ferroelectricity driven photovoltaic effect is an emerging area of research, which

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Mechanism of the Switchable Photovoltaic Effect in Ferroelectric

Jun 17, 2011· Mechanism of the Switchable Photovoltaic Effect in Ferroelectric BiFeO 3. H. T. Yi, H. T. Yi. Rutgers Center for Emergent Materials, Dept. Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA Directions of rectification and photocurrent in a ferroelectric BiFeO 3 crystal can be switched by applying high-voltage pulses at

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Switchable Ferroelectric Diode and Photovoltaic Effect in BiFeO

Dec 8, 2008· We report on a diode effect associated with the direction of bulk electric polarization in BiFeO3: a ferroelectric with a small optical gap edge of ~2.2 electron volts. We found that

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Switchable Ferroelectric Diode and Photovoltaic Effect in BiFeO3

It is found that bulk electric conduction in ferroelectric monodomain BiFeO3 crystals is highly nonlinear and unidirectional. Unidirectional electric current flow, such as that found in a diode, is essential for modern electronics. It usually occurs at asymmetric interfaces such as p-n junctions or metal/semiconductor interfaces with Schottky barriers. We report on a diode effect

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Switchable photovoltaic response from polarization modulated

Apr 8, 2014· The switchable photovoltaic effect in BiFeO3 thin films capacitors has been studied extensively. However, the origin of the photovoltaic response is still under We suggest that the Schottky barrier modulation by ferroelectric polarization at the Pt/BiFeO 3 interface is mainly responsible for the photovoltaic effect,

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Switchable photovoltaic effect in solar cells: Architecture, features

Jan 1, 2022· The switchable photovoltaic effect contributes to the production of proficient solar cells with high photovoltage in the absence of transparent electrodes, which are in short supply. Moving further to the photovoltaic effect in ferroelectric oxide perovskites, the mechanism is still unclear as the research findings have different degrees of

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A chiral switchable photovoltaic ferroelectric 1D perovskite

Feb 28, 2020· Recently, ferroelectric semiconductors with strong spin-orbit coupling emerged as theoretically promising candidates for previously unavailable electronic functionalities such as spin-orbitronics, by exploiting the electric field–switchable Rashba-Dresselhaus effect (1–6).The ability to break inversion symmetry in a field-dependent manner is the primary source of this

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Do switchable ferroelectric diode & photovoltaic effects exist in epitaxial bifeo 3 thin films?

Switchable ferroelectric diode and photovoltaic effects in epitaxial BiFeO 3 (BFO) thin films have drawn intense attention for its potential applications in resistive memory and solar cell. However, both of these two effects were observed almost entirely in epitaxial BFO thin films or bulk crystal.

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Switchable ferroelectric diode and photovoltaic effects in

Mar 31, 2020· This study demonstrates that the polycrystalline BFO thin film on a transparent substrate also has the ferroelectric switchable diode and photovoltaic effects. Therefore, these

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Enhanced switchable ferroelectric photovoltaic in BiFeO3 based

Jun 1, 2022· Meanwhile, the internal mechanism for the enhancement of switchable photovoltaic response by ferroelectric polarization was further elucidated. This proposes a simple idea to enhance the switchable ferroelectric photovoltaic effect and provides a promising pathway for the development of photovoltaic devices. 2. Methods2.1.

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Enhanced photovoltaic effects and switchable conduction behavior

Apr 15, 2015· Enhanced photovoltaic effects are demonstrated in an In 2 O 3-SnO 2 /BiFe 0.6 Sc 0.4 O 3 /LaNiO 3 (ITO/BFSO/LNO) ferroelectric thin film heterostructure. The Sc-substitution greatly improves the bulk conductivity of BiFeO 3 (BFO) and modifies the energy band alignment in the ITO/BFSO/LNO capacitor structure, where a tunable Schottky-to-Ohmic contact at the

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Does a switchable photovoltaic effect exist in ferroelectric materials?

They believed that the inhomogeneous spatial distribution of oxygen vacancies would induce a built-in field whose direction is opposite to the external field. It means the switchable photovoltaic effect can not only exist in ferroelectric materials, but also exists in all structures with Schottky junction.

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The switchable bulk photovoltaic effect in 2D room temperature

Sep 24, 2024· The bulk photovoltaic effect (BPVE) is a crucial branch of nonlinear optics that plays a significant role in fundamental physics and practical applications. In this study, we

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Can photovoltaic effect and Rs effect coexist in ferroelectric diodes?

It has been reported ferroelectric photovoltaic effect and RS effect can coexist and affect each other in ferroelectric diodes [ 29, 89, 94 ]. According to the conduction mechanism analysis of these two effects, both PV and RS are affected by the interface coupling effect.

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Enhanced Switchable Ferroelectric Photovoltaic Effects in

Jan 2, 2018· Ferroelectric photovoltaics (FPVs) are being extensively investigated by virtue of switchable photovoltaic responses and anomalously high photovoltages of ∼10 4 V. However,

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Switchable Ferroelectric Diode and Photovoltaic Effect in

polarization when a ferroelectric under continuous light illumination forms a closed circuit. This PV effect in ferroelectrics is distinctly different from the typical PV effect in semiconductor p-n junctions, and was investigated, for example, in Pb-based ferroelectric oxides (9–11) and LiNbO3 (6, 8). However, the observed photocurrent

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Giant photovoltaic response in band engineered ferroelectric perovskite

May 22, 2018· Here a non-toxic co-doped Ba1−x(Bi0.5Li0.5) x TiO3 ferroelectric system is designed where the dopants influence the band topology in order to enhance the photovoltaic effect.

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Ferroelectric photovoltaic effect and resistive switching behavior

Oct 19, 2020· In recent years, ferroelectric materials attract much attention due to their great potential in photovoltaic and storage applications, especially the anomalous photovoltaic effect

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Polarity control of carrier injection at ferroelectric/metal

phenomenon to bulk effects. This switchable ferroelectric-diode effect may enable novel applications, such as ferro-electric resistive memory with a nondestructive readout.4,10 11 Additionally, Jiang et al.15 reported switchable diode effects using BiFeO 3 thin-film capacitors, attributing the phenomena to oxygen-vacancy (V

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Switchable photovoltaic effect in bilayer graphene/BiFeO3/Pt

Oct 8, 2014· The heterostructures showed switchable photovoltaic effect depending on ferroelectric polarization directions indicating depolarization field induced separation of photo-generated carriers. The open circuit voltage (V OC ) and short circuit current density (J SC ) were measured to be ∼110 mV, ∼92 μ A/cm 2 in positive polarity and similar

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Switchable Ferroelectric Photovoltaic Effects in Epitaxial

1 Switchable Ferroelectric Photovoltaic Effects in Epitaxial Thin Films of h-RFeO3 having Narrow Optical Band Gaps Hyeon Hana, Donghoon Kima, Ji Hyun Leea, Jucheol Parkb, Sang Yeol Namb,c, Mingi Choid, Kijung Yongd, and Hyun Myung Janga,* aDepartment of Materials Science and Engineering, and Division of Advanced Materials Science, Pohang University of Science

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Studies of the switchable photovoltaic effect in co-substituted

Oct 31, 2014· Ferroelectric materials are interesting due to their spontaneous polarization which is essential for device applications. 1,2 Moreover, they show an intrinsic photovoltaic (PV) response arising from a strong coupling between light, photocurrents, and atomic-scale degrees of freedom that cause a current-driven modulation of the internal field. 3 PV properties in both

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Why are ferroelectric materials important in photovoltaic and storage applications?

In recent years, ferroelectric materials attract much attention due to their great potential in photovoltaic and storage applications, especially the anomalous photovoltaic effect (APVE) and resistive switching (RS) behaviors.

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Enhanced Switchable Ferroelectric Photovoltaic Effects in

Jan 2, 2018· This study presents a promising FPV based on hexagonal YbFeO3 (h-YbFO) thin-film heterostructure by exploiting its narrow Eg and demonstrates enhanced FPV effects by suitably exploiting the substrate-induced film strain in these h-YBFO-based photovoltaics. Ferroelectric photovoltaics (FPVs) are being extensively investigated by virtue of switchable

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Switchable magnetic bulk photovoltaic effect in the two

Aug 22, 2019· The bulk photovoltaic effect (BPVE) rectifies light into the dc current in a single-phase material and attracts the interest to design high-efficiency solar cells beyond the pn junction paradigm.

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Engineering ferroelectric-nanonet-based heterostructures enables

Apr 15, 2024· It is noted that the target device produced a negative V OC and positive J SC regardless of the upward-P or downward-P state, which is different from the general ferroelectric PV modulation showing switchable V OC and J SC with reversing poling direction due to the bulk PV effect [33]. This feature is ascribed to the coupling of polarization

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Switchable ferroelectric diode and photovoltaic effects in

Semantic Scholar extracted view of "Switchable ferroelectric diode and photovoltaic effects in polycrystalline BiFeO3 thin films grown on transparent substrates" by Yong Zhou et al. The switchable photovoltaic effect in BiFeO3 thin films capacitors has been studied extensively. However, the origin of the photovoltaic response is still under

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Non-synchronous bulk photovoltaic effect in two-dimensional

Jul 1, 2022· Spontaneous polarization and bulk photovoltaic effect (BPVE) are two concomitant physical properties in ferroelectric materials. The flipping of ferroelectric order usually accompanies the

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Polarity control of carrier injection at ferroelectric/metal interfaces

Sep 8, 2011· We investigated a switchable ferroelectric diode effect and its physical mechanism in Pt/BiFeO 3 /SrRuO 3 thin-film capacitors. Our results of electrical measurements support that, near the Pt/BiFeO 3 interface of as-grown samples, a defective layer (possibly an oxygen-vacancy-rich layer) becomes formed and disturbs carrier injection. We therefore used an

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Switchable ferroelectric photovoltaic in the low bandgap cobalt

Dec 30, 2022· More importantly, the BFCO devices show switchable ferroelectric photovoltaic effects and diode-like rectification effects. The J SC and V OC of the present films have increased from 1.87 μA/cm 2 and −0.24 V to 3.40 μA/cm 2 and −0.42 V, respectively. The present work can promote the application of the BFCO system in the photovoltaic and

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Switchable Photovoltaic Effect in Ferroelectric CsPbBr3

Jan 6, 2024· Ferroelectric all-inorganic halide perovskites nanocrystals with both spontaneous polarizations and visible light absorption are promising candidates for designing functional ferroelectric photovoltaic devices. Three dimensional halide perovskite nanocrystals have the potential of being ferroelectric, yet it remains a challenge to realize ferroelectric photovoltaic

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Ferroelectric ZnSnS3 thin films: growth and measurement of photovoltaic

Nov 21, 2023· The switchable nature of the photogenerated voltage and current, as illustrated in Fig. 7 for the poled samples, indicated that the ferroelectric polarization plays a dominant role in the observed bulk photovoltaic effect in ZnSnS 3 thin films deposited by the pyrolysis technique.

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What are the characteristics of ferroelectric photovoltaics (FPV)?

The fundamentally different mechanism endows ferroelectric photovoltaics (FPV) with unique characteristics, such as switchable photovoltaic outputs (4 – 7), above-bandgap photovoltage (2, 3, 8 – 10), and light polarization dependence (3, 4, 10, 11).

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Enhanced switchable photovoltaic response and ferromagnetic of

Apr 25, 2018· The switchable photovoltaic effect would be ascribed to the reversible Schottky-to-Ohmic interfacial contacts modulated by polarization switching. Both the polarization-electric field (P-E) loops and ferroelectric photovoltaic effect were measured using the TF-Analyser 1000 of aixACCT ferroelectric test system at room temperature. The

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Thinning ferroelectric films for high-efficiency photovoltaics based

Apr 26, 2019· The ferroelectric photovoltaic (PV) effect has gained widespread attention in the past decade 1,2,3,4,5 because of its promising applications in solar energy harvesting 6,7,8, self-powered

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Switchable ferroelectric diode and photovoltaic effects in

Mar 31, 2020· Switchable ferroelectric diode and photovoltaic effects in epitaxial BiFeO 3 (BFO) thin films have drawn intense attention for its potential applications in resistive memory and solar cell. However, both of these two effects were observed almost entirely in

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Non-volatile memory based on the ferroelectric photovoltaic effect

Jun 11, 2013· Ferroelectric RAM is considered a promising candidate on the quest for a universal memory, but the concept is still problem prone. Here, the authors use the ferroelectric photovoltaic effect as a

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Above-bandgap voltages from ferroelectric photovoltaic devices

Jan 10, 2010· Electric-field control over domain structure allows the photovoltaic effect to be reversed in polarity or turned off. Choi, Y. J., Kiryukhin, V. & Cheong, S.-W. Switchable ferroelectric diode

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About Switchable ferroelectric photovoltaic effects

About Switchable ferroelectric photovoltaic effects

A substantial visible-light photovoltaic effect is observed in BiFeO 3 diode structures. These results should improve understanding of charge conduction mechanisms in leaky ferroelectrics and advance the design of switchable devices combining ferroelectric, electronic, and optical functionalities.

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