A century of ferroelectricity

doi:10.1038/s41563-020-0611-1

Cited by 34 publications

(8 citation statements)

References 8 publications

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“…Since the discovery of ferroelectricity in Rochelle salt by Valasek in 1920, ferroelectric, as an analog of ferromagnetic, has seen its development from fundamental properties to applications for a century. [ 1 ] A ferroelectric is typically defined as a material with intrinsic polarization P that can be reversed under an external electric field E . Ferroelectrics usually have a phase‐transition temperature T c above which they are paraelectric if they do not melt.…”

Section: Introductionmentioning

confidence: 99%

Engineering the Defects and Microstructures in Ferroelectrics for Enhanced/Novel Properties: An Emerging Way to Cope with Energy Crisis and Environmental Pollution

et al. 2022

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In the past century, ferroelectrics are well known in electroceramics and microelectronics for their unique ferroelectric, piezoelectric, pyroelectric, and photovoltaic effects. Nowadays, the advances in understanding and tuning of these properties have greatly promoted a broader application potential especially in energy and environmental fields, by harvesting solar, mechanical, and heat energies. For example, high piezoelectricity and high pyroelectricity can be designed by defect or microstructure engineering for piezo‐ and pyro‐catalyst, respectively. Moreover, highly piezoelectric and broadband (UV–Vis–NIR) light‐responsive ferroelectrics can be designed via defect engineering, giving rise to a new concept of photoferroelectrics for efficient photocatalysis, piezocatalysis, pyrocatalysis, and related cocatalysis. This article first summarizes the recent developments in ferroelectrics in terms of piezoelectricity, pyroelectricity, and photovoltaic effects based on defect and microstructure engineering. Then, the potential applications in energy generation (i.e., photovoltaic effect, H2 generation, and self‐powered multisource energy harvesting and signal sensing) and environmental protection (i.e., photo‐piezo‐pyro‐ cocatalytic dye degradation and CO2 reduction) are reviewed. Finally, the outlook and challenges are discussed. This article not only covers an overview of the state‐of‐art advances of ferroelectrics, but also prospects their applications in coping with energy crisis and environmental pollution.

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Section: Introductionmentioning

confidence: 99%

Engineering the Defects and Microstructures in Ferroelectrics for Enhanced/Novel Properties: An Emerging Way to Cope with Energy Crisis and Environmental Pollution

et al. 2022

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“…Since the pioneering studies in the 1920s by Joseph Valasek on ferroelectricity in Rochelle salt (e.g. KNaC 4 H 4 O 6 •4H 2 O) [1], ferroelectric materials have had an enormous impact in science and exploited in many technologies ranging from high-energy capacitors and transducers to ultrasound medical imaging [2][3][4]. More recently, the observation of ferroelectricity in van der Waals (vdW) crystals has attracted significant interest [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Ferroelectric semiconductor junctions based on graphene/In₂Se₃/graphene van der Waals heterostructures

Xie

Dey

et al. 2021

2D Mater.

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The miniaturization of ferroelectric devices offers prospects for non-volatile memories, low-power electrical switches and emerging technologies beyond existing Si-based integrated circuits. An emerging class of ferroelectrics is based on van der Waals (vdW) two-dimensional materials with potential for nano-ferroelectrics. Here, we report on ferroelectric semiconductor junctions (FSJs) in which the ferroelectric vdW semiconductor α-In 2 Se 3 is embedded between two single-layer graphene electrodes. In these two-terminal devices, the ferroelectric polarization of the nanometre-thick In 2 Se 3 layer modulates the transmission of electrons across the graphene/In 2 Se 3 interface, leading to memristive effects that are controlled by applied voltages and/or by light. The underlying mechanisms of conduction are examined over a range of temperatures and under light excitation revealing thermionic injection, tunnelling and trap-assisted transport. These findings are relevant to future developments of FSJs whose geometry is well suited to miniaturization and low-power electronics, offering opportunities to expand functionalities of ferroelectrics by design of the vdW heterostructure.

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“…Moreover, large polarization switching in ferroelectric materials usually needs to be preliminarily polarized by an external bias electric field because of crystal twinning, which is inappropriate for the practical application of pyroelectric properties. 11,16,17…”

Section: Introductionmentioning

confidence: 99%

Giant thermal expansion associated with a macroscopic polarization change in a single crystal of a Zn(ii) complex

Tang

Liu

Zhang

et al. 2023

Inorg. Chem. Front.

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A century of ferroelectricity

Cited by 34 publications

References 8 publications

Engineering the Defects and Microstructures in Ferroelectrics for Enhanced/Novel Properties: An Emerging Way to Cope with Energy Crisis and Environmental Pollution

Engineering the Defects and Microstructures in Ferroelectrics for Enhanced/Novel Properties: An Emerging Way to Cope with Energy Crisis and Environmental Pollution

Ferroelectric semiconductor junctions based on graphene/In₂Se₃/graphene van der Waals heterostructures

Giant thermal expansion associated with a macroscopic polarization change in a single crystal of a Zn(ii) complex

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A century of ferroelectricity

Cited by 34 publications

References 8 publications

Engineering the Defects and Microstructures in Ferroelectrics for Enhanced/Novel Properties: An Emerging Way to Cope with Energy Crisis and Environmental Pollution

Engineering the Defects and Microstructures in Ferroelectrics for Enhanced/Novel Properties: An Emerging Way to Cope with Energy Crisis and Environmental Pollution

Ferroelectric semiconductor junctions based on graphene/In2Se3/graphene van der Waals heterostructures

Giant thermal expansion associated with a macroscopic polarization change in a single crystal of a Zn(ii) complex

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Product

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Ferroelectric semiconductor junctions based on graphene/In₂Se₃/graphene van der Waals heterostructures