A room-temperature antiferroelectric in hybrid perovskite enables highly efficient energy storage at low electric fields

Liu, Yi; Xu, Haojie; Liu, Xitao; Han, Shiguo; Guo, Wuqian; Ma, Yu; Fan, Qingshun; Hu, Xinxin; Sun, Zhihua

doi:10.1039/d2sc05285g

Cited by 19 publications

(14 citation statements)

References 61 publications

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“…Simultaneously, the amplitude parameter (Figure c) reveals significant variations in the in-plane polarization magnitude among different domains, with the smallest polarization value occurring at the boundaries between adjacent domains, indicating polarization cancellation. Through the visual observation of ferroelectric domains by using PFM, the presence of ferroelectricity in 1 is confirmed. , …”

Section: Resultsmentioning

confidence: 74%

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Excellent Switchable Properties, Broad-Band Emission, Ferroelectricity, and High T_c in a Two-Dimensional Hybrid Perovskite: (4,4-DCA)₂PbBr₄ Exploited by H/F Substitution

et al. 2023

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Switchable materials have gained significant attention due to their potential applications in data storage, sensors, and switching devices. Two-dimensional (2D) hybrid perovskites have demonstrated promising prospects for designing switchable materials, where the dynamic motion of the organic components coupled with the distortion of the inorganic framework provides the driving force for triggering multifunctional switchable properties. Herein, through the H/F substitution strategy, we report a polar 2D hybrid lead-based perovskite, (4,4-DCA)2PbBr4 (4,4-DCA = 4,4-difluorocyclohexylammonium) (1), which exhibits dual-stable behavior in a dielectric and second harmonic generation (SHG) response during the reversible phase transition process near the high Curie temperature T c ∼ 409 K. The phase transition temperature is significantly increased by 41 K compared to the corresponding non-fluorinated (CHA)2PbBr4 (CHA = cyclohexylammonium). Remarkably, the material shows rare broad-band yellow emission under UV excitation, attributed to the induction of self-trapped exciton emission by the distortion of the [PbBr6] 4– octahedra, as confirmed by the first-principles analysis. 1 also exhibited ferroelectricity with a saturation polarization value and a small coercive field. This study provides a new insight into the modification of multifunctional switchable materials through the H/F substitution strategy.

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Section: Resultsmentioning

confidence: 74%

“…Through the visual observation of ferroelectric domains by using PFM, the presence of ferroelectricity in 1 is confirmed. 62,63 ■…”

Section: ■ Introductionmentioning

confidence: 99%

Excellent Switchable Properties, Broad-Band Emission, Ferroelectricity, and High T_c in a Two-Dimensional Hybrid Perovskite: (4,4-DCA)₂PbBr₄ Exploited by H/F Substitution

et al. 2023

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“…In general, cyano-bridged double perovskites exhibit obvious dielectric switching behaviours around the T c , that is, a low dielectric constant in the LTP (''off'' state) and high dielectric constant in the HTP (''on'' state). 14,45,46 Large single crystals of 1 were carefully grown for dielectric switching measurements (Fig. S5 and S6d, ESI †).…”

Section: Dielectric Switchingmentioning

confidence: 99%

Hydrogen-bonding engineering in a 3D cyano-bridged double-perovskite ferroelastic greatly improves the phase-transition temperature

Li,

Chen,

et al. 2023

J. Mater. Chem. C

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“…[9][10][11][12] Otherwise, compared to traditional three-dimen-sional structures, which limited by the lower stability of the tolerance factor and the limited choice of cations. [13][14][15] Lowdimensional structures exhibit higher stability and more chemically modifiable organic cations. [16][17] By searching for quasispherical cations.…”

Section: Introductionmentioning

confidence: 99%

A Novel Hybrid Multifunctional Compound: (CMQ)BiCl₅ Showing Enhancement in Physical Properties by Halogen Substitution

Wan,

Tan,

Fan

et al. 2023

ChemistrySelect

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Organic‐inorganic hybrid multifunctional materials have received significant attention due to their potential applications in smart devices such as phase‐change memory (PCM), resistive random‐access memory (ReRAM). Yet, devices application requires achieving a balance between fast switching speeds, long‐term stability, and high cycling endurance in materials still facing difficulties. Herein, we report two hybrid phase transition compounds: (CMQ)BiCl5(CMQ=Chloromethyl Quinuclidin‐3‐one) (1) and (FMQ)2SbBr5(FMQ=Fluoromethyl Quinuclidin‐3‐one) (2), both two compounds exhibit high phase transition temperature, dual‐stable behavior in dielectric during reversible phase transition process. Notably, 1 exhibit small dielectric change after multiple dielectric state switching. Furthermore, investigate the influence of halogen substitution (F to Cl) for compound properties, which show an Increasing transition temperature (9 K) and raising structural dimension (0D to 1D). Additionally, using first principles, analyze the electronic structure of 1 and find that it has a 3.4 eV wide bandgap, closing to GaN semiconductor (3.4 eV). This work provides a new insight into developing the next‐generation phase transition compounds and chemical modification enhances material performance.

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A room-temperature antiferroelectric in hybrid perovskite enables highly efficient energy storage at low electric fields

Abstract: Molecular antiferroelectrics (AFEs) have taken a booming position in the miniaturization of energy storage devices due to their low critical electric field. However, regarding intrinsic competitions between dipolar interaction and...

Cited by 19 publications

References 61 publications

Excellent Switchable Properties, Broad-Band Emission, Ferroelectricity, and High T_c in a Two-Dimensional Hybrid Perovskite: (4,4-DCA)₂PbBr₄ Exploited by H/F Substitution

Excellent Switchable Properties, Broad-Band Emission, Ferroelectricity, and High T_c in a Two-Dimensional Hybrid Perovskite: (4,4-DCA)₂PbBr₄ Exploited by H/F Substitution

Hydrogen-bonding engineering in a 3D cyano-bridged double-perovskite ferroelastic greatly improves the phase-transition temperature

A Novel Hybrid Multifunctional Compound: (CMQ)BiCl₅ Showing Enhancement in Physical Properties by Halogen Substitution

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A room-temperature antiferroelectric in hybrid perovskite enables highly efficient energy storage at low electric fields

Abstract: Molecular antiferroelectrics (AFEs) have taken a booming position in the miniaturization of energy storage devices due to their low critical electric field. However, regarding intrinsic competitions between dipolar interaction and...

Cited by 19 publications

References 61 publications

Excellent Switchable Properties, Broad-Band Emission, Ferroelectricity, and High Tc in a Two-Dimensional Hybrid Perovskite: (4,4-DCA)2PbBr4 Exploited by H/F Substitution

Excellent Switchable Properties, Broad-Band Emission, Ferroelectricity, and High Tc in a Two-Dimensional Hybrid Perovskite: (4,4-DCA)2PbBr4 Exploited by H/F Substitution

Hydrogen-bonding engineering in a 3D cyano-bridged double-perovskite ferroelastic greatly improves the phase-transition temperature

A Novel Hybrid Multifunctional Compound: (CMQ)BiCl5 Showing Enhancement in Physical Properties by Halogen Substitution

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Excellent Switchable Properties, Broad-Band Emission, Ferroelectricity, and High T_c in a Two-Dimensional Hybrid Perovskite: (4,4-DCA)₂PbBr₄ Exploited by H/F Substitution

Excellent Switchable Properties, Broad-Band Emission, Ferroelectricity, and High T_c in a Two-Dimensional Hybrid Perovskite: (4,4-DCA)₂PbBr₄ Exploited by H/F Substitution

A Novel Hybrid Multifunctional Compound: (CMQ)BiCl₅ Showing Enhancement in Physical Properties by Halogen Substitution