Piezoelectric properties of template-free electrochemically grown*
(2015) Applied Surface Science — Vol. 356, p. 1214-1220 (2015)
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- In this work, we evaluated the piezoelectric properties of the ZnO nanorods (NRs), subsequently grownby a template-free electrochemical deposition (ECD) approach. The one-step preparation method yieldedin a relatively short-time synthesis large arrays of high aspect-ratio ZnO NRs, vertically aligned to thesubstrate and exhibiting a well-defined hexagonal symmetry coupled with an excellent crystallinity.Piezoresponse force microscopy (PFM) was employed to extract the effective piezoelectric coefficient(d33) of the ZnO [0 0 0 1]-oriented NRs. A mean effective d33coefficient of 11.8 pm/V was measured overseveral individual NRs. The results have shown an increased piezoelectric response of the ZnO NRs, with∼18% in respect to the ZnO bulk material, and with a factor ranging from 28% to 167% compared to similarZnO nanostructures prepared by other counterpart techniques. Both morphology and crystalline qualityof the obtained ZnO NRs, as well as the piezoelectric investigations, ranked the ECD as a promising low-cost pathway for possibly producing high quality nanostructured ZnO-based piezoelectric devices withenhanced performance.
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Tamvakosa, D., Lepadatu, S., Antohe, V., TAMVAKOS, A., Weaver, P. M., Piraux, L., Cain, M. G., & Pullini, D. (2015). Piezoelectric properties of template-free electrochemically grown*. Applied Surface Science, 356, 1214-1220. https://doi.org/10.1016/j.apsusc.2015.08.187 (Original work published 2015)