Local Piezoelectricity and Polarity Distribution of Preferred c-Axis-Oriented ZnO Film Investigated by Piezoresponse Force Microscopy

Li, Cui Ping; Yang, Boyuan

doi:10.1007/s11664-010-1415-x

Cited by 20 publications

(6 citation statements)

References 18 publications

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“…The effective d 33 values were 11.25 pm/V for the ZnO films on (+z) LiNbO 3 and 15.94 pm/V for the ZnO films on (-z) LiNbO 3 , respectively. These values coincide with the previous reports about the piezoresponse of undoped ZnO films [24][25][26]. The typical D-V butterfly loop was obtained with displacement-maximum values of~0.11 nm at~3 V for the ZnO films on (+z) LiNbO 3 and~0.2 nm at 2.45 V for the ZnO films on (-z) LiNbO 3 , as shown in Figure 4e,f, respectively.…”

Section: The Polarity Determinationsupporting

confidence: 91%

Polarity Control of ZnO Films Grown on Ferroelectric (0001) LiNbO3 Substrates without Buffer Layers by Pulsed-Laser Deposition

et al. 2020

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For this study, polarity-controlled ZnO films were grown on lithium niobate (LiNbO3) substrates without buffer layers using the pulsed-laser deposition technique. The interfacial structure between the ZnO films and the LiNbO3 was inspected using high-resolution transmission electron microscopy (HR-TEM) measurements, and X-ray diffraction (XRD) measurements were performed to support these HR-TEM results. The polarity determination of the ZnO films was investigated using piezoresponse force microscopy (PFM) and a chemical-etching analysis. It was verified from the PFM and chemical-etching analyses that the ZnO film grown on the (+z) LiNbO3 was Zn-polar ZnO, while the O-polar ZnO occurred on the (-z) LiNbO3. Further, a possible mechanism of the interfacial atomic configuration between the ZnO on the (+z) LiNbO3 and that on the (-z) LiNbO3 was suggested. It appears that the electrostatic stability at the substrate surface determines the initial nucleation of the ZnO films, leading to the different polarities in the ZnO systems.

show abstract

Section: The Polarity Determinationsupporting

confidence: 91%

Polarity Control of ZnO Films Grown on Ferroelectric (0001) LiNbO3 Substrates without Buffer Layers by Pulsed-Laser Deposition

et al. 2020

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“…ZnO has been brought into the focus of research due to the high electromechanical coupling factor and more specifically its piezoelectric coefficient, since piezoelectricity provides a direct conversion between mechanical and electrical energy and thus opens up the possibility of using these materials for sensing, actuation or energy harvesting applications. Several investigations have been performed on both, nanostructures such as nanowires 18 19 20 , and thin films 21 22 23 . As, a result, ZnO nanowires and nanobelts have also been suggested for applications in piezoelectric nanogenerators 24 .…”

mentioning

confidence: 99%

Piezoelectric Templates – New Views on Biomineralization and Biomimetics

Stitz¹,

Eiben

Atanasova³

et al. 2016

Sci Rep

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Biomineralization in general is based on electrostatic interactions and molecular recognition of organic and inorganic phases. These principles of biomineralization have also been utilized and transferred to bio-inspired synthesis of functional materials during the past decades. Proteins involved in both, biomineralization and bio-inspired processes, are often piezoelectric due to their dipolar character hinting to the impact of a template’s piezoelectricity on mineralization processes. However, the piezoelectric contribution on the mineralization process and especially the interaction of organic and inorganic phases is hardly considered so far. We herein report the successful use of the intrinsic piezoelectric properties of tobacco mosaic virus (TMV) to synthesize piezoelectric ZnO. Such films show a two-fold increase of the piezoelectric coefficient up to 7.2 pm V−1 compared to films synthesized on non-piezoelectric templates. By utilizing the intrinsic piezoelectricity of a biotemplate, we thus established a novel synthesis pathway towards functional materials, which sheds light on the whole field of biomimetics. The obtained results are of even broader and general interest since they are providing a new, more comprehensive insight into the mechanisms involved into biomineralization in living nature.

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“…The Piezoelectric Effect (PE) of thin ZnO films is characterized by PFM for standard piezoelectric phenomena [26]. In all the piezoelectric measurements, the interaction between the tip and electric field was ignored [27].…”

Section: Resultsmentioning

confidence: 99%

Nano Size Related Piezoelectric Efficiency in a Large ZnO Thin Film, Potential for Self-Powered Medical Device Application

Li¹,

Gao²

2016

Biochem Anal Biochem

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Large-area piezoelectric ZnO films with different gran size has been synthesized by sol-gel technique using different annealing temperatures from 550 to 700°C. The piezoelectric efficiency (PE) of those deposited films is characterized by Piezoelectric Force Microscopy (PFM). All synthesized films exhibit a crystal structure. The width of the rock curve of [0002] characterized by x-ray diffraction decreases with the annealing temperature, suggesting a better c-axis orientated ZnO film formed at higher annealing temperature. The grain size of the grown films are found to continuously increase from 20 to 60 nm when the annealing temperatures increase from 550 to 700°C. The piezoelectric efficiency (PE, d 33 ) of the films exhibit strong grain size dependence, i.e., the PE initially increase with the annealing temperature and then decreasing with a further annealing temperature increased. The maximum PE value appears in the film annealed at 650°C. The peculiar piezoelectric properties (d 33 ) can be explained by the competing between the crystalline, which favors a larger d 33 due to the enhanced dipole polarization, and the grain size, which results in a piezoforce release at large grain size due to domain wall size and motion.

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Local Piezoelectricity and Polarity Distribution of Preferred c-Axis-Oriented ZnO Film Investigated by Piezoresponse Force Microscopy

Cited by 20 publications

References 18 publications

Polarity Control of ZnO Films Grown on Ferroelectric (0001) LiNbO3 Substrates without Buffer Layers by Pulsed-Laser Deposition

Polarity Control of ZnO Films Grown on Ferroelectric (0001) LiNbO3 Substrates without Buffer Layers by Pulsed-Laser Deposition

Piezoelectric Templates – New Views on Biomineralization and Biomimetics

Nano Size Related Piezoelectric Efficiency in a Large ZnO Thin Film, Potential for Self-Powered Medical Device Application

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