2D Ferroelectrics and ferroelectrics with 2D: Materials and device prospects

Leblanc, Chloe; Song, Seunguk; Jariwala, Deep

doi:10.1016/j.cossms.2024.101178

Current Opinion in Solid State and Materials Science

2024

DOI: 10.1016/j.cossms.2024.101178

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2D Ferroelectrics and ferroelectrics with 2D: Materials and device prospects

Chloe Leblanc,

Seunguk Song,

Deep Jariwala

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Cited by 4 publications

References 182 publications

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Oxygen‐Doped 2D In₂Se₃ Nanosheets with Extended In‐Plane Lattice Strain for Highly Efficient Piezoelectric Energy Harvesting

Kim,

Hwang,

Han

et al. 2024

Advanced Science

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With the emergence of electromechanical devices, considerable efforts have been devoted to improving the piezoelectricity of 2D materials. Herein, an anion‐doping approach is proposed as an effective way to enhance the piezoelectricity of α‐In2Se3 nanosheets, which has a rare asymmetric structure in both the in‐plane and out‐of‐plane directions. As the O2 plasma treatment gradually substitutes selenium with oxygen, it changes the crystal structure, creating a larger lattice distortion and, thus, an extended dipole moment. Prior to the O2 treatment, the lattice extension is deliberately maximized in the lateral direction by imposing in situ tensile strain during the exfoliation process for preparing the nanosheets. Combining doping and strain engineering substantially enhances the piezoelectric coefficient and electromechanical energy conversion. As a result, the optimal harvester with a 0.9% in situ strain and 10 min plasma exposure achieves the highest piezoelectric energy harvesting values of ≈13.5 nA and ≈420 µW cm−2 under bending operation, outperforming all previously reported 2D materials. Theoretical estimation of the structural changes and polarization with gradual oxygen substitution supports the observed dependence of the electromechanical performance.

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Oxygen‐Doped 2D In₂Se₃ Nanosheets with Extended In‐Plane Lattice Strain for Highly Efficient Piezoelectric Energy Harvesting

Kim,

Hwang,

Han

et al. 2024

Advanced Science

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Dielectric properties of ferrielectric anthracene-like nanostructure: Monte Carlo study

Saber,

Fadil,

Sabbah

et al. 2025

Solid State Communications

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Optical Detection of Sliding Ferroelectric Switching in hBN with a WSe₂ Monolayer

Roux,

Fraunié,

Watanabe

et al. 2024

Nano Lett.

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2D Ferroelectrics and ferroelectrics with 2D: Materials and device prospects

Cited by 4 publications

References 182 publications

Oxygen‐Doped 2D In₂Se₃ Nanosheets with Extended In‐Plane Lattice Strain for Highly Efficient Piezoelectric Energy Harvesting

Oxygen‐Doped 2D In₂Se₃ Nanosheets with Extended In‐Plane Lattice Strain for Highly Efficient Piezoelectric Energy Harvesting

Dielectric properties of ferrielectric anthracene-like nanostructure: Monte Carlo study

Optical Detection of Sliding Ferroelectric Switching in hBN with a WSe₂ Monolayer

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2D Ferroelectrics and ferroelectrics with 2D: Materials and device prospects

Cited by 4 publications

References 182 publications

Oxygen‐Doped 2D In2Se3 Nanosheets with Extended In‐Plane Lattice Strain for Highly Efficient Piezoelectric Energy Harvesting

Oxygen‐Doped 2D In2Se3 Nanosheets with Extended In‐Plane Lattice Strain for Highly Efficient Piezoelectric Energy Harvesting

Dielectric properties of ferrielectric anthracene-like nanostructure: Monte Carlo study

Optical Detection of Sliding Ferroelectric Switching in hBN with a WSe2 Monolayer

Contact Info

Product

Resources

About

Oxygen‐Doped 2D In₂Se₃ Nanosheets with Extended In‐Plane Lattice Strain for Highly Efficient Piezoelectric Energy Harvesting

Oxygen‐Doped 2D In₂Se₃ Nanosheets with Extended In‐Plane Lattice Strain for Highly Efficient Piezoelectric Energy Harvesting

Optical Detection of Sliding Ferroelectric Switching in hBN with a WSe₂ Monolayer