Recent progress in bismuth ferrite-based thin films as a promising photovoltaic material

Seyfouri, Mohammad Moein; Wang, Danyang

doi:10.1080/10408436.2019.1708700

Cited by 46 publications

(32 citation statements)

References 137 publications

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“…Since the discovery of bulk photovoltaic effect (BPV), [1] BPV has attracted a lot of attention because of the peculiar photogenerated carrier separation mechanism. [2,3] Under illumination, photogenerated carriers are spontaneously produced and separated in ferroelectric domain wall (DW) due to the inversion symmetry breaking. [4,5] Different from the traditional p-n junction-based photovoltaic effect, the photovoltage of BPV is much larger than the bandgap, [6,7] as well as the power conversion efficiency can exceed the Shockley-Queisser limit.…”

Section: Introductionmentioning

confidence: 99%

Impact of Ferroelectric Domain Structure on Bulk Photovoltaic Effect of Epitaxial BiFe₁₋_xCo_xO₃ Films

Chen

Wei

et al. 2022

Adv Elect Materials

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Ferroelectric domain is an elusive feature on bulk photovoltaic effect and can be tuned by the growth conditions. Here, in (111)‐oriented BiFe1−xCoxO3 epitaxial films, the periodic ferroelectric domains structure is manipulated by Co‐doped concentration. The intrinsic 109° domain structure is turned into 71° domain structure due to reduction of crystal cell volume. The experimental results show that ferroelectric domain and ferroelectric domain wall (DW) play completely different roles in bulk photovoltaic effect. In ferroelectric domain structure, the domain provides a depolarization field for the separation of photogenerated carriers and DW is carriers transport channel. The 71° ferroelectric domain creates a larger depolarization field than the 109° domain, which leads to open‐circuit voltage exceeding 1.7 V. Besides, the 71° domain wall has a higher photoconductivity than the 109° domain wall, which makes short‐circuit current density reaching 0.42 mA cm−2. The optimization of domain structure will effectively enhance bulk photovoltaic effect and also provides a new method to regulate the domain structure for bulk photovoltaic devices.

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Section: Introductionmentioning

confidence: 99%

Impact of Ferroelectric Domain Structure on Bulk Photovoltaic Effect of Epitaxial BiFe₁₋_xCo_xO₃ Films

Chen

Wei

et al. 2022

Adv Elect Materials

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“…Another very broad and important area is photo-induced applications, where lead-free BFO is a more promising material in comparison to other ferroelectric oxides because of its relatively small band-gap, which allow it to utilize quite a large part of the sunlight spectrum [5]. Thus, it is widely used in photovoltaics [6]. Moreover, BFO was shown to be an efficient visible light photocatalyst for the degradation of organic pollutants, such as antibiotics and dyes [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

A Facile Synthesis and Characterization of Highly Crystalline Submicro-Sized BiFeO3

et al. 2020

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In this study, a highly crystalline bismuth ferrite (BFO) powder was synthesized using a novel, very simple, and cost-effective synthetic approach. It was demonstrated that the optimal annealing temperature for the preparation of highly-pure BFO is 650 °C. At lower or higher temperatures, the formation of neighboring crystal phases was observed. The thermal behavior of BFO precursor gel was investigated by thermogravimetric and differential scanning calorimetry (TG-DSC) measurements. X-ray diffraction (XRD) analysis and Mössbauer spectroscopy were employed for the investigation of structural properties. Scanning electron microscopy (SEM) was used to evaluate morphological features of the synthesized materials. The obtained powders were also characterized by magnetization measurements, which showed antiferromagnetic behavior of BFO powders.

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“…Although the origin of the photovoltaic effect in bismuth ferrite remains controversial, several key factors, such as domain wall, depolarization field, Schottky barrier, and oxygen defect, do have a significant impact on its photovoltaic characteristics. 4,6,7,10,15 The domain wall effect was confirmed to be the dominant factor only for the anomalous photovoltaic effect observed in the epitaxial BiFeO 3 films with periodic ferroelectric stripe domain patterns. 4,7 The depolarization field induced by the unscreened polarization charges to efficiently drive the separation of photogenerated carriers was suggested to work well in the polarized or self-polarized ferroelectrics, but it will be too low to account for the photovoltaic effect in the leaky BiFeO 3 films or bulk.…”

Section: Resultsmentioning

confidence: 93%

Integrating Band Engineering and the Flexoelectric Effect Induced by a Composition Gradient for High Photocurrent Density in Bismuth Ferrite Films

Sun

Wei

Yang

et al. 2021

ACS Appl. Mater. Interfaces

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Photovoltaic energy as one of the important alternatives to traditional fossil fuels has always been a research hot spot in the field of renewable and clean solar energy. Very recently, the anomalous ferroelectric photovoltaic effect in multiferroic bismuth ferrite (BiFeO3) has attracted much attention due to the above-bandgap photovoltage and switchable photocurrent. However, its photocurrent density mostly in the magnitudes of μA/cm2 resulted in a poor power conversion efficiency, which severely hampered its practical application as a photovoltaic device. In this case, a novel approach was designed to improve the photocurrent density of BiFeO3 through the cooperative effect of the gradient distribution of oxygen vacancies and consequently induced the flexoelectric effect realized in the (La, Co) gradient-doped BiFeO3 multilayers. Subsequent results and analysis indicated that the photocurrent density of the gradient-doped multilayer BiFeO3 sample was nearly 3 times as much as that of the conventional doped single-layer sample. Furthermore, a possible mechanism was proposed herein to demonstrate roles of band engineering and the flexoelectric effect on the photovoltaic performance of the gradient-doped BiFeO3 film.

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Recent progress in bismuth ferrite-based thin films as a promising photovoltaic material

Cited by 46 publications

References 137 publications

Impact of Ferroelectric Domain Structure on Bulk Photovoltaic Effect of Epitaxial BiFe₁₋_xCo_xO₃ Films

Impact of Ferroelectric Domain Structure on Bulk Photovoltaic Effect of Epitaxial BiFe₁₋_xCo_xO₃ Films

A Facile Synthesis and Characterization of Highly Crystalline Submicro-Sized BiFeO3

Integrating Band Engineering and the Flexoelectric Effect Induced by a Composition Gradient for High Photocurrent Density in Bismuth Ferrite Films

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Recent progress in bismuth ferrite-based thin films as a promising photovoltaic material

Cited by 46 publications

References 137 publications

Impact of Ferroelectric Domain Structure on Bulk Photovoltaic Effect of Epitaxial BiFe1−xCoxO3 Films

Impact of Ferroelectric Domain Structure on Bulk Photovoltaic Effect of Epitaxial BiFe1−xCoxO3 Films

A Facile Synthesis and Characterization of Highly Crystalline Submicro-Sized BiFeO3

Integrating Band Engineering and the Flexoelectric Effect Induced by a Composition Gradient for High Photocurrent Density in Bismuth Ferrite Films

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Product

Resources

About

Impact of Ferroelectric Domain Structure on Bulk Photovoltaic Effect of Epitaxial BiFe₁₋_xCo_xO₃ Films

Impact of Ferroelectric Domain Structure on Bulk Photovoltaic Effect of Epitaxial BiFe₁₋_xCo_xO₃ Films