New direction's piezoelectricity and new applications of two-dimensional group V-IV-III-VI films: A theoretical study

Zhu, Dong-Ran; Wu, Yang; Zhang, He-Na; Zhu, Liang-Hui; Zhao, Sheng-Nan; Wang, Xiao-Chun

doi:10.1016/j.physe.2020.114214

Cited by 12 publications

(9 citation statements)

References 38 publications

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“…Since the report of the piezoelectric effect in 1880, piezoelectric materials with the ability to convert mechanical energy into electrical energy have undergone rapid development and have been widely used in various nanoscale sensors, energy harvesters, mechanical actuators, and acoustic storage devices. − At present, the commonly used bulk piezoelectric materials include α-quartz ( d 11 = 2.27 pm/V) and wurtzite AlN ( d 33 = 5.4 pm/V), and another traditional type is lead-based material represented by Pb[Zr x Ti 1– x ]O 3 (PZT). , All of them more or less suffer from the drawbacks of toxicity (lead element), high cost, and high dielectric constant. In addition, traditional bulk piezoelectric materials are deficient in high crystallinity and high integration, , which cannot meet the requirements of constructing electronic devices toward the nanoscale in the future.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Janus Nanostructures M₂AB (M = Si, Ge, Sn, A/B = N, P, As) for Piezoelectric Power Generation

Yao,

Chen,

Cai

et al. 2024

ACS Appl. Nano Mater.

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Two-dimensional (2D) Janus structures, as a newly derived form of 2D materials, have recently attracted great attention due to their structural symmetry breaking along with a piezoelectric effect and potential applications in nanoscale sensors, surface acoustic waves, and energy harvesters. To date, 2D Janus materials mainly appear in the IV−VI and III−V systems but are scarce involving the IV−V elements. Hereby, utilizing firstprinciples structure prediction, a stable IV−V−V family of 2D Janus structure 1T-M 2 AB (M = Si, Ge, Sn, A/B = N, P, As) was proposed. Their electronic, elastic, and piezoelectric properties are systematically investigated and compared. The calculated piezoelectric coefficient results reveal that the 1T-Sn 2 NP exhibits superior piezoelectric performance with a high in-plane piezoelectric constant (−8.07 pm/V), beyond many known 2D piezoelectric materials. Three independent factors of charge density distribution, vertical mirror asymmetry, and electrostatic potential gradients were assessed, which can well account for the piezoelectric characteristics of 1T-M 2 AB. This work not only demonstrates the potential applications of 2D Janus 1T-M 2 AB monolayer in piezoelectric devices but also enriches the family of 2D Janus structures.

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Section: Introductionmentioning

confidence: 99%

Two-Dimensional Janus Nanostructures M₂AB (M = Si, Ge, Sn, A/B = N, P, As) for Piezoelectric Power Generation

Yao,

Chen,

Cai

et al. 2024

ACS Appl. Nano Mater.

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“…2D materials with Janus geometry have garnered much attention for their new properties arising from the broken out-of-plane symmetry. 10,15–24 Interestingly, Yang's group has proposed a new photocatalytic model with an intrinsic dipole that can relieve restriction on the bandgap requirement of photocatalysts. 25 The potential applications of Janus materials in photocatalysis have been revealed in the past.…”

Section: Introductionmentioning

confidence: 99%

Switch effect on controlled water splitting by biaxial strain regulating the promising two-dimensional Janus X₂PAs (X = Si, Ge and Sn) photocatalyst

He¹,

Yang²,

Yang³

et al. 2023

Nanoscale

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“…Wu et al reported the dynamical stability, mechanical properties, and piezoelectric coefficients of Janus X 2 PAs (X = Si, Ge, Sn) monolayers based on DFT calculations and found that the monolayers exhibit excellent piezoelectric effect toward in-plane and out-of-plane directions. Moreover, other 2D Janus materials exhibited novel electronic features and piezoelectric characteristics. − Moreover, it was demonstrated that spin–orbit coupling (SOC) and symmetry lack in Janus structures could result in the Rashba effect . It was reported that Janus Si 2 XY (X and Y = P, As, Sb, and Bi) monolayers exhibit large Rashba coefficients of 1.295 eV/Å under the biaxial strain .…”

Section: Introductionmentioning

confidence: 99%

Structural and Electronic Properties of Two-Dimensional Janus XGeSiY (X, Y = P, As, Sb, and Bi) Monolayers: A First-Principles Study

Mao

Yang

2023

ACS Appl. Electron. Mater.

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Herein, the dynamical stability and electronic, optical, and transport properties of Janus two-dimensional (2D) XGeSiY (X and Y = P, As, Sb, and Bi) monolayers are investigated based on first-principles calculations. The stability of 16 Janus configurations of XGeSiY monolayers, except the BiGeSiP monolayer, is validated via the study on cohesion energies and phonon spectra. Based on varying structural stacking configurations, XGeSiY monolayers can exhibit a direct or indirect bandgap. Janus XGeSiY monolayers can exhibit significant optical absorption with a broad spectrum ranging from infrared to ultraviolet regions. The carrier mobilities of the studied systems are highly anisotropic. In stable Janus XGeSiY monolayers, the mobility of electrons is considerably higher than that of holes. These results imply that Janus XGeSiY monolayers can be considered as potential applied electronic materials for next-generation optoelectronics.

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New direction's piezoelectricity and new applications of two-dimensional group V-IV-III-VI films: A theoretical study

Cited by 12 publications

References 38 publications

Two-Dimensional Janus Nanostructures M₂AB (M = Si, Ge, Sn, A/B = N, P, As) for Piezoelectric Power Generation

Two-Dimensional Janus Nanostructures M₂AB (M = Si, Ge, Sn, A/B = N, P, As) for Piezoelectric Power Generation

Switch effect on controlled water splitting by biaxial strain regulating the promising two-dimensional Janus X₂PAs (X = Si, Ge and Sn) photocatalyst

Structural and Electronic Properties of Two-Dimensional Janus XGeSiY (X, Y = P, As, Sb, and Bi) Monolayers: A First-Principles Study

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New direction's piezoelectricity and new applications of two-dimensional group V-IV-III-VI films: A theoretical study

Cited by 12 publications

References 38 publications

Two-Dimensional Janus Nanostructures M2AB (M = Si, Ge, Sn, A/B = N, P, As) for Piezoelectric Power Generation

Two-Dimensional Janus Nanostructures M2AB (M = Si, Ge, Sn, A/B = N, P, As) for Piezoelectric Power Generation

Switch effect on controlled water splitting by biaxial strain regulating the promising two-dimensional Janus X2PAs (X = Si, Ge and Sn) photocatalyst

Structural and Electronic Properties of Two-Dimensional Janus XGeSiY (X, Y = P, As, Sb, and Bi) Monolayers: A First-Principles Study

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Two-Dimensional Janus Nanostructures M₂AB (M = Si, Ge, Sn, A/B = N, P, As) for Piezoelectric Power Generation

Two-Dimensional Janus Nanostructures M₂AB (M = Si, Ge, Sn, A/B = N, P, As) for Piezoelectric Power Generation

Switch effect on controlled water splitting by biaxial strain regulating the promising two-dimensional Janus X₂PAs (X = Si, Ge and Sn) photocatalyst