Enhanced photovoltaic effects and switchable conduction behavior in BiFe0.6Sc0.4O3 thin films

Fan, Zhen; Ji, Wei; Li, Tao; Xiao, Juanxiu; Yang, Ping; Ong, Khuong P.; Zeng, Kaiyang; Yao, Kui; Wang, John

doi:10.1016/j.actamat.2015.01.021

Cited by 37 publications

(36 citation statements)

References 26 publications

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“…PFM is the primary tool to investigate the nanoscale ferroelectric domains and polarization dynamics for various piezoelectric and ferroelectric materials such as PZT, relaxor‐based piezoelectric materials (PZN‐PT or PMN‐PT), multiferroic BiFeO 3 (BFO) and organic ferroelectrics. We have applied PFM in many material systems, including doped/undoped BFO thin films, PZN‐PT single crystal, CH 3 NH 3 PbI 3 perovskite, MOF nanocrystals, poly(vinylidene fluoride) (PVDF) film, and ferroelectric‐like copper‐doped zinc oxide (ZnO:Cu) thin films . Taking the PZN‐PT single crystal as an example, the out‐of‐plan domain structure and the corresponding surface potential are illustrated in Figure i.…”

Section: Examples Of Materials Systems Investigated Using Spm Techniquesmentioning

confidence: 99%

Probing of Local Multifield Coupling Phenomena of Advanced Materials by Scanning Probe Microscopy Techniques

Zeng

2018

Advanced Materials

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The characterization of the local multifield coupling phenomenon (MCP) in various functional/structural materials by using scanning probe microscopy (SPM)-based techniques is comprehensively reviewed. Understanding MCP has great scientific and engineering significance in materials science and engineering, as in many practical applications, materials and devices are operated under a combination of multiple physical fields, such as electric, magnetic, optical, chemical and force fields, and working environments, such as different atmospheres, large temperature fluctuations, humidity, or acidic space. The materials' responses to the synergetic effects of the multifield (physical and environmental) determine the functionalities, performance, lifetime of the materials, and even the devices' manufacturing. SPM techniques are effective and powerful tools to characterize the local effects of MCP. Here, an introduction of the local MCP, the descriptions of several important SPM techniques, especially the electrical, mechanical, chemical, and optical related techniques, and the applications of SPM techniques to investigate the local phenomena and mechanisms in oxide materials, energy materials, biomaterials, and supramolecular materials are covered. Finally, an outlook of the MCP and SPM techniques in materials research is discussed.Multifield Coupling temperature, moisture, and atmosphere. The studies of multifield coupling phenomena (MCP) are important for functional and structural materials because they are often operated under several external stimuli simultaneously in real applications. In the area of multifield coupling, a group of researchers have dedicated to the computational and modeling works in order to explain

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Section: Examples Of Materials Systems Investigated Using Spm Techniquesmentioning

confidence: 99%

Probing of Local Multifield Coupling Phenomena of Advanced Materials by Scanning Probe Microscopy Techniques

Zeng

2018

Advanced Materials

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“…As a result, the effect is probably less well studied in contrast to the BPVE. The overall barrier height can be enhanced by sandwiching a ferroelectric semiconductor between electrodes of different materials with a large difference in work function . This was first demonstrated by Blom et al in 1994 who sandwiched a ferroelectric PbTiO 3 film between a Schottky contact (Au) and an Ohmic bottom electrode (La 0.5 Sr 0.5 CoO 3 ) and showed that the Schottky barrier can be reduced by switching the polarization in the direction of the ferroelectric polarization.…”

Section: Application In Solar Cellsmentioning

confidence: 94%

“…However, the photovoltaic effect obtained using this mechanism is not stable as the poled state of vacancies usually becomes unstable on removal of the electric field over time. However, it remains useful in distinguishing between the depolarization and Schottky junction–based photovoltaic mechanism as it is possible to have switchable diode‐like rectifying behavior using the Schottky junction effect but not with the depolarization field . Interestingly, the Schottky junction effect is independent of the direction of polarization and, therefore, it can be used to distinguish it from BPVE .…”

Section: Application In Solar Cellsmentioning

confidence: 99%

Mutual Insight on Ferroelectrics and Hybrid Halide Perovskites: A Platform for Future Multifunctional Energy Conversion

et al. 2019

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An insight into the analogies, state-of-the-art technologies, concepts, and prospects under the umbrella of perovskite materials (both inorganicorganic hybrid halide perovskites and ferroelectric perovskites) for future multifunctional energy conversion and storage devices is provided. Often, these are considered entirely different branches of research; however, considering them simultaneously and holistically can provide several new opportunities. Recent advancements have highlighted the potential of hybrid perovskites for high-efficiency solar cells. The intrinsic polar properties of these materials, including the potential for ferroelectricity, provide additional possibilities for simultaneously exploiting several energy conversion mechanisms such as the piezoelectric, pyroelectric, and thermoelectric effect and electrical energy storage. The presence of these phenomena can support the performance of perovskite solar cells. The energy conversion using these effects (piezo-, pyro-, and thermoelectric effect) can also be enhanced by a change in the light intensity. Thus, there lies a range of possibilities for tuning the structural, electronic, optical, and magnetic properties of perovskites to simultaneously harvest energy using more than one mechanism to realize an improved efficiency. This requires a basic understanding of concepts, mechanisms, corresponding material properties, and the underlying physics involved with these effects. His current research focuses on developing functional inorganic−organic hybrid materials and energy conversion devices including perovskite solar cells.are found to have lower t-values (0.75 < t < 1.0). t-values help in governing and tuning the presence of ferroelectricity in perovskites [11] and are responsible for the transition temperatures in ferroelectrics. [57] In the case of hybrid inorganic-organic perovskites, the A-site and/or X-site ions are replaced by molecular building blocks; hence, the tolerance

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“…Perhaps checking the dark conduction behavior simultaneously with the photovoltaic behavior is useful to identify which mechanism is working, because tunable Schottky barriers will give rise to switchable diode-like rectifying behavior in dark 131,164,183 while the bulk effect of Edp will not. Therefore, the mechanism how the switchable photovoltaic effect is controlled by the ferroelectric polarization is still controversial.…”

Section: Schottky Barrier Effectmentioning

confidence: 99%

“…Therefore, the mechanism how the switchable photovoltaic effect is controlled by the ferroelectric polarization is still controversial. 164 Thus, both Ebi and Edp can constructively contribute to the overall photovoltaic output. 32 A proper design of the energy band alignment in the electrode/ferroelectric/electrode sandwich structure can lead to an overall Ebi within Schottky barriers having the same direction with Edp.…”

Section: Schottky Barrier Effectmentioning

confidence: 99%

Perovskites for photovoltaics: a combined review of organic–inorganic halide perovskites and ferroelectric oxide perovskites

2015

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REVIEWThis journal is © The Royal Society of Chemistry 2015 J. Mater. Chem. A 1Over the past few years, very interestingly, two subclasses of perovskitesorganic-inorganic halide perovskites and ferroelectric oxide perovskites, have simultaneously become the hotspots in the research field of photovoltaics. Organic-inorganic halide perovskites have launched a new era of low-cost, high-efficiency solar cells, due to their easy solution processability and superior optical and electrical properties for the photovoltaic effect. More recently, a so-called giant switchable photovoltaic effect has been demonstrated in organicinorganic halide perovskites, thus promising a new memristive functionality. On the other hand, the recent renaissance of ferroelectric oxide perovskites for photovoltaics is caused by their fundamentally new photovoltaic mechanisms, which can produce a photovoltage far beyond the bandgap and may even lead to a boost of energy conversion efficiency. In addition, the combination of photovoltaic properties with the ferroic orders may create many novel functionalities for ferroelectric oxide perovskites. Toward the common goals of developing high-efficiency photovoltaics and novel opto-electronic functional devices, these two different subclasses of perovskites shall be brought together into a combined review. In this context, we review both organic-inorganic halide perovskites and ferroelectric oxide perovskites for photovoltaics, focusing on the material nature and the photovoltaic mechanisms. We also discuss their respective unresolved issues, along with useful suggestions for future research.

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Enhanced photovoltaic effects and switchable conduction behavior in BiFe0.6Sc0.4O3 thin films

Cited by 37 publications

References 26 publications

Probing of Local Multifield Coupling Phenomena of Advanced Materials by Scanning Probe Microscopy Techniques

Probing of Local Multifield Coupling Phenomena of Advanced Materials by Scanning Probe Microscopy Techniques

Mutual Insight on Ferroelectrics and Hybrid Halide Perovskites: A Platform for Future Multifunctional Energy Conversion

Perovskites for photovoltaics: a combined review of organic–inorganic halide perovskites and ferroelectric oxide perovskites

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