Shape- and size dependent piezoelectric properties of monolayer hexagonal boron nitride nanosheets

Nan, Yun; Tan, Dan; Zhao, Junqi; Willatzen, Morten; Wang, Zhong Lin

doi:10.1039/c9na00643e

Cited by 22 publications

(29 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The piezoelectric properties of LD materials are mainly dependent on the layered atomic thickness film with a noncentrosymmetric structure. − The layered material should also have a certain charge delocalization for the piezoelectric property. It is worthwhile mentioning that metals do not have piezoelectric properties because the high electron concentration shields the polarization charges.…”

Section: Principles and Performance Indicators For Piezoelectricitymentioning

confidence: 99%

Enhanced Piezoelectric Properties Enabled by Engineered Low-Dimensional Nanomaterials

Wang

Guo

et al. 2022

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Today's electronic products are moving toward personal, portable, and flexible electronics with the integration of multifunctional sensors and self-powering technologies. Consequently, efficient and highperformance mechanical−electronic interfaces will be heavily considered in the development of future electronics. Piezotronic materials are active components for the conversion of mechanical stimuli to electrical signals and vice versa. In particular, low-dimensional (LD) materials offer greater efficiencies in piezoelectric materials than their bulk counterparts. Piezoelectric LD materials have attracted significant attention because of their successful integration in miniatured and flexible electronics. The origin of the piezoelectric responses of the LD materials is ascribed as a loss of centrosymmetry and inversion center. However, challenges exist in utilizing piezoelectric materials to their full potential, including effective charge separation upon external stimuli and imperfections in their crystal structures. Therefore, considerable efforts have been devoted to engineering the LD piezoelectric materials by rational structural design and chemical modification to further improve the piezoelectric performances. Herein, we comprehensively review the recent advances for engineering technologies of piezoelectric materials on the scale of zero-dimensional (0D), one-dimensional (1D), and two-dimensional (2D), which are mainly focused on creating defects, doping, and forming Janus structures and heterointerfaces with other materials. Meanwhile, the relationships between the morphological, physicochemical, and electronics of engineered LD piezoelectric materials and their piezoelectric performances are systematically discussed. Finally, we further present the prospect and challenge of the field and future research direction, aiming to inspire more research for achieving high-performance LD piezoelectric materials in sensors, actuators, and micro-and nanoelectromechanical systems.

show abstract

Section: Principles and Performance Indicators For Piezoelectricitymentioning

confidence: 99%

Enhanced Piezoelectric Properties Enabled by Engineered Low-Dimensional Nanomaterials

Wang

Guo

et al. 2022

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…Due to their excellent physical properties, XNs have been shown to be promising in a variety of applications in recent years, including nanoelectronics, spintronics, optoelectronics, and heterojunction devices. − The substantial difference in electronegativity between constituent elements in group III nitrides is expected to exhibit significant polarization on mechanical agitation. Nan et al investigated the piezoelectric characteristics of 2D h -BN nanosheets and found that the microscopic structure has a considerable effect on the piezoelectric behavior. A nanowire of InN may produce a piezoelectric potential of up to 1 V in a nanogenerator, and the direction of the transverse force affects the polarity of the potential .…”

Section: Introductionmentioning

confidence: 99%

Tribo-Piezoelectricity in Group III Nitride Bilayers: A Density Functional Theory Investigation

Zamil

Islam

Stampfl

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The notable out-of-plane piezoelectric effect caused by the large electronegativity of the constituent elements makes two-dimensional (2D) group III nitrides appealing for nanoscale energy-harvesting applications. Here, we demonstrate by extensive density functional theory investigations that the vertical piezoelectricity is enhanced significantly in 2D XN (X = B, Al, Ga) bilayers due to in-plane interlayer sliding. The sliding operation generates tribological energy from the vertical resistance force between the monolayers. A maximum shear strength between the monolayers of 1−25 GPa is recorded during vertical sliding. We elucidate the tribo-piezoelectricity generation mechanism of XN bilayers using the tribological energy conversion to overcome the interfacial sliding barrier. The strongest out-of-plane piezoelectricity is found when the bilayers are in the A−A stacking arrangement. Any reduction in the interlayer distance between group III nitride bilayers enhances out-of-plane polarization due to the increase in sliding energy resistances, leading to an increased inductive voltage output. An induced voltage of ∼3.5 V is achieved during vertical compressive sliding of the upper layer. Using these phenomena, we present a compression-slide XN bilayer nanogenerator strategy capable of tuning the produced tribo-piezoelectric energy through sliding and compression.

show abstract

“…Since the group-III nitrides are electronegative in nature, it is predicted that these materials will demonstrate significant polarization with external mechanical disposition 35 – 40 . To this extent, Nan et al 41 have investigated piezoelectricity in 2D hexagonal boron nitride nanosheets (BNNS) and posited that piezoelectricity in BNNS strongly depends on the microscopic shape of the structure. In a single layer InN nanowire nanogenerator, a piezoelectric potential as high as 1 V can be obtained, and the polarity of the potential depends on the direction of the applied transverse force 42 .…”

Section: Introductionmentioning

confidence: 99%

Strong tribo-piezoelectric effect in bilayer indium nitride (InN)

Islam

Zamil

Mojumder

et al. 2021

Sci Rep

View full text Add to dashboard Cite

The high electronegativity between the atoms of two-dimensional (2D) group-III nitrides makes them attractive to demonstrating a strong out-of-plane piezo-electricity effect. Energy harvesting devices can be predicted by cultivating such salient piezoelectric features. This work explores the tribo-piezoelectric properties of 2D-indium nitride (InN) as a promising candidate in nanogenerator applications by means of first-principles calculations. In-plane interlayer sliding between two InN monolayers leads to a noticeable rise of vertical piezoelectricity. The vertical resistance between the InN bilayer renders tribological energy by the sliding effect. During the vertical sliding, a shear strength of 6.6–9.7 GPa is observed between the monolayers. The structure can be used as a tribo-piezoelectric transducer to extract force and stress from the generated out-of-plane tribo-piezoelectric energy. The A–A stacking of the bilayer InN elucidates the highest out-of-plane piezoelectricity. Any decrease in the interlayer distance between the monolayers improves the out-of-plane polarization and thus, increases the inductive voltage generation. Vertical compression of bilayer InN produces an inductive voltage in the range of 0.146–0.196 V. Utilizing such a phenomenon, an InN-based bilayer compression-sliding nanogenerator is proposed, which can tune the generated tribo-piezoelectric energy by compressing the interlayer distance between the InN monolayers. The considered model can render a maximum output power density of ~ 73 mWcm−2 upon vertical sliding.

show abstract

Shape- and size dependent piezoelectric properties of monolayer hexagonal boron nitride nanosheets

Abstract: A symmetry analysis of 2D BN nanosheet geometries is carried out. We demonstrate effective shape tuning of piezoelectric properties.

Cited by 22 publications

References 51 publications

Enhanced Piezoelectric Properties Enabled by Engineered Low-Dimensional Nanomaterials

Enhanced Piezoelectric Properties Enabled by Engineered Low-Dimensional Nanomaterials

Tribo-Piezoelectricity in Group III Nitride Bilayers: A Density Functional Theory Investigation

Strong tribo-piezoelectric effect in bilayer indium nitride (InN)

Contact Info

Product

Resources

About