Enhanced output performance of sandwich-type ZnO piezoelectric nanogenerator with adhesive carbon tape

Yoon, Chongsei; Jeon, Buil; Yoon, Giwan

doi:10.1016/j.sna.2020.112499

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…Yoon et al 27 , developed a sandwich-type ZnO-Ag-ZnO stacked PENG, which was able to generate a relatively high output voltage compared to the single ZnO-layered device. However, they found that the developed device was structurally weak when subjected to mechanical forces, owing to hardening and brittleness of the Ag paste layer over time 29 . Therefore, they developed a new sandwich-type ZnO piezoelectric nanogenerator composed of stacked layers of ZnO-(carbon tape)-ZnO, and demonstrated that the use of a conductive carbon tape leads to significant increase in the output voltage 29 .…”

Section: Introductionmentioning

confidence: 99%

“…However, they found that the developed device was structurally weak when subjected to mechanical forces, owing to hardening and brittleness of the Ag paste layer over time 29 . Therefore, they developed a new sandwich-type ZnO piezoelectric nanogenerator composed of stacked layers of ZnO-(carbon tape)-ZnO, and demonstrated that the use of a conductive carbon tape leads to significant increase in the output voltage 29 . In turn, Jung and co-workers 28 incorporated a Cu interlayer between the ZnO thin films to form a multi-layered structure, and showed that the piezoelectric output is enhanced by intervention of a copper conductive layer, in result of the induced interfacial polarization between the ZnO film and the Cu inclusion.…”

Section: Introductionmentioning

confidence: 99%

“…The multi-layer design of PENGs including a conductive intermediate layer has been demonstrated to improve the output performance [26][27][28][29] . Yoon et al 27 , developed a sandwich-type ZnO-Ag-ZnO stacked PENG, which was able to generate a relatively high output voltage compared to the single ZnO-layered device.…”

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confidence: 99%

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Sandwich-type double-layer piezoelectric nanogenerators based on one- and two-dimensional ZnO nanostructures with improved output performance

Fakhri,

Eaianli,

Bagherzadeh

et al. 2023

Sci Rep

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Piezoelectric nanogenerators (PENGs) have attracted great interest owing to their broad range application in environmental mechanical energy harvesting to power small electronic devices. In this study, novel flexible and high-performance double-layer sandwich-type PENGs based on one-dimensional (1-D) and two-dimensional (2-D) zinc oxide (ZnO) nanostructures and Ni foam as the middle layer have been developed. The morphology and structure of 1- and 2-D ZnO nanostructures have been studied by scanning electron microscopy (SEM) and X-ray diffraction (XRD). To investigate the effect of structural design on the piezoelectric performance, single-layer PENGs were also fabricated. The piezoelectric output of all prepared PENGs were evaluated under different human impacts at various forces and frequencies. The double-layer designed PENGs showed a two times larger voltage output compared to the single-layer PENGs, and the use of Ni foam as middle-layer and of 2-D ZnO nanosheets (compared to 1-D nanorods) was also found to increase the performance of the designed PENGs. The working mechanism of the prepared PENGs is also discussed. The design of nanogenerators as double-layer sandwich structures instead of two integrated single-layer devices reduces the overall preparation time and processing steps and enhances their output performance, thus opening the gate for widening their practical applications.

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Section: Introductionmentioning

confidence: 99%