Polarity and piezoelectric response of solution grown zinc oxide nanocrystals on silver

Scrymgeour, David; Sounart, Thomas L.; Simmons, Neil C.; Hsu, Julia W. P.

doi:10.1063/1.2405014

Cited by 71 publications

(68 citation statements)

References 47 publications

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“…[28][29][30][31] Indeed, recently several PFM investigations on ZnO nanostructures and thin films have been carried out. [32][33][34][35] Here, we present PFM experiments on both undoped and Co-doped ZnO thin films, aiming at investigating the spatial distribution of the out-of-plane piezoelectric matrix element d 33 , which measures the material displacement in the same direction as the applied out-of-plane electric field.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectricity and charge trapping in ZnO and Co-doped ZnO thin films

et al. 2017

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Highly efficient isolation of waterborne sound by an air-sealed meta-screen AIP Advances 7, 055001 (2017) Piezoelectricity and charge storage of undoped and Co-doped ZnO thin films were investigated by means of PiezoResponse Force Microscopy and Kelvin Probe Force Microscopy. We found that Co-doped ZnO exhibits a large piezoelectric response, with the mean value of piezoelectric matrix element d 33 slightly lower than in the undoped sample. Moreover, we demonstrate that Co-doping affects the homogeneity of the piezoelectric response, probably as a consequence of the lower crystalline degree exhibited by the doped samples. We also investigate the nature of the interface between a metal electrode, made up of the PtIr AFM tip, and the films as well as the phenomenon of charge storage. We find Schottky contacts in both cases, with a barrier value higher in PtIr/ZnO than in PtIr/Co-doped ZnO, indicating an increase in the work function due to Co-doping. © 2017 Author(s)

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Section: Introductionmentioning

confidence: 99%

Piezoelectricity and charge trapping in ZnO and Co-doped ZnO thin films

et al. 2017

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“…238 PFM imaging and local d 33 measurements have also been measured for large-order arrays 239 and individual nanorods of ZnO. 240 In 2008, Scrymgeour and Hsu reported combined PFM and conducting-AFM measurements of ZnO nanorods (Fig. 8), finding that d 33 was higher for more resistive nanorods.…”

Section: Pfm Of Gan and Ainmentioning

confidence: 99%

“…241 Previously, based on nanorod measurements (d 33 = 4.41 ± 1.73 pm/V), Scrymgeour et al reported that PFM measurements were not correlated with height and exhibited weak linear correlation with diameter. 240 PFM has also been used to investigate the piezoelectric properties of sputtered, 242,243 and sol-gel 244 prepared thin films. Schuler et al reported high-resolution inversion domain boundaries on the order of 1.5 nm in sputtered ZnO thin films.…”

Section: Pfm Of Gan and Ainmentioning

confidence: 99%

Applications of piezoresponse force microscopy in materials research: from inorganic ferroelectrics to biopiezoelectrics and beyond

Denning

Guyonnet

Rodriguez

2016

International Materials Reviews

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Piezoresponse force microscopy (PFM) probes the mechanical deformation of a sample in response to an electric field applied with the tip of an atomic force microscope. Originally developed more than two decades ago to study ferroelectric materials, this technique has since been used to probe electromechanical functionality in a wide range of piezoelectric materials including organic and biological systems. PFM has also been demonstrated as a useful tool to detect mechanical strain originating from electrical phenomena in nonpiezoelectric materials. Paralleling advances in analytical and numerical modelling, many technical improvements have been made in the last decade: switching spectroscopy PFM allows the polarisation switching properties of ferroelectrics to be resolved in real space with nanometric resolution, while dual ac resonance tracking and band excitation PFM have been used to improve the signal-to-noise ratio. In turn, these advances have led to increasingly large multidimensional data sets containing more complete information on the properties of the sample studied. In this review, PFM operation and calibration are described, and recent advances in the characterisation of electromechanical coupling using PFM are presented. The breadth of the systems covered highlights the versatility and wide applicability of PFM in fields as diverse as materials engineering and nanomedicine. In each of these fields, combining PFM with complementary techniques is key to develop future insight into the intrinsic properties of the materials as well as for device applications.

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“…For example, Wang and Song [17] has synthesized aligned ZnO nanowire arrays and has characterized their electrical energy generation via deformation induced by an atomic force microscope tip. Scrymgeour et al [19] has employed a solution technique for growing ZnO nanorods on silver films, and piezoelectric force microscopy studies estimate that the d 33 constants of individual nanorods are approximately 4.41 ± 1.73 pm V -1 . On the other hand, Lin et al [20] has fabricated a PZT/ZnO nanowhisker nanocomposite; when compared to monolithic PZT, although the piezoelectric constant of the nanocomposite decreased slightly, the nanocomposite's flexural strength and fracture toughness increased by 40 and 30%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Zinc oxide nanoparticle-polymeric thin films for dynamic strain sensing

Loh

Chang

2010

J Mater Sci

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Piezoelectric transducers are becoming increasingly popular for dynamic strain monitoring due to their small form factors and their ability to generate an electrical voltage drop in response to strain. Although numerous types of piezoelectric thin films have been adopted for strain sensing, it has been shown that piezo-ceramics are expensive, brittle, and can fail during operation, while piezo-polymers possess lower piezoelectricity and mechanical stiffness. Thus, the objective of this study is to develop a piezoelectric thin film characterized by high piezoelectricity (i.e., high dynamic strain sensitivities) and favorable mechanical properties (i.e., being conformable to structural surfaces yet stiff). First, zinc oxide (ZnO) nanoparticles are dispersed in polyelectrolyte solutions, and the excess solvent is evaporated for thin film fabrication. The amount of ZnO nanoparticles embedded within the films is varied to yield seven unique sample sets with ZnO weight fractions ranging from 0 to 60%. Upon film fabrication, specimens are mounted in a load frame for monotonic uniaxial testing to explore the films' stressstrain performance and to subsequently determine their mechanical properties (namely, modulus of elasticity, ultimate strength, and ultimate failure strain). Finally, film specimens are also mounted onto cantilevered beams undergoing free vibration due to an applied initial displacement. The generated voltages in response to induced strains in the beams are recorded, and the piezoelectric performance and dynamic strain sensitivities for the different weight fraction films are calculated and compared. Commercial PVDF thin films are also employed in this study for performance comparison.

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Polarity and piezoelectric response of solution grown zinc oxide nanocrystals on silver

Cited by 71 publications

References 47 publications

Piezoelectricity and charge trapping in ZnO and Co-doped ZnO thin films

Piezoelectricity and charge trapping in ZnO and Co-doped ZnO thin films

Applications of piezoresponse force microscopy in materials research: from inorganic ferroelectrics to biopiezoelectrics and beyond

Zinc oxide nanoparticle-polymeric thin films for dynamic strain sensing

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