TY - JOUR
T1 - Efficient Piezoelectric Energy Harvesters Utilizing (001) Textured Bimorph PZT Films on Flexible Metal Foils
AU - Yeo, Hong Goo
AU - Ma, Xiaokun
AU - Rahn, Christopher
AU - Trolier-McKinstry, Susan
N1 - Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2016/8/23
Y1 - 2016/8/23
N2 - Extracting energy from low vibration frequencies (<10 Hz) using piezoelectric energy harvester promises continuous self-powering for sensors and wearables. The piezoelectric compliant mechanism (PCM) design provides a significantly higher efficiency by fostering a uniform strain for its 1st mode shape, and so is interesting for this application. In this paper, a PCM energy harvester with bimorph Pb(Zr,Ti)O3 (PZT) films on Ni foil deposited by rf magnetron sputtering is shown to have high efficiency and large power for low frequency mechanical vibration. In particular, {001} textured PZT films are deposited on both sides of polished Ni foils with (100) oriented LaNiO3 seed layers on HfO2 buffer layers. The performance of PCM with an active area of 5.2 cm2 is explored for various excitation accelerations (0.02–0.16 g [g = 9.8 m s−2]) around 6 Hz. The PCM device provides a power level of 3.9 mW cm−2 g2 and 65% mode shape efficiencies.
AB - Extracting energy from low vibration frequencies (<10 Hz) using piezoelectric energy harvester promises continuous self-powering for sensors and wearables. The piezoelectric compliant mechanism (PCM) design provides a significantly higher efficiency by fostering a uniform strain for its 1st mode shape, and so is interesting for this application. In this paper, a PCM energy harvester with bimorph Pb(Zr,Ti)O3 (PZT) films on Ni foil deposited by rf magnetron sputtering is shown to have high efficiency and large power for low frequency mechanical vibration. In particular, {001} textured PZT films are deposited on both sides of polished Ni foils with (100) oriented LaNiO3 seed layers on HfO2 buffer layers. The performance of PCM with an active area of 5.2 cm2 is explored for various excitation accelerations (0.02–0.16 g [g = 9.8 m s−2]) around 6 Hz. The PCM device provides a power level of 3.9 mW cm−2 g2 and 65% mode shape efficiencies.
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U2 - 10.1002/adfm.201601347
DO - 10.1002/adfm.201601347
M3 - Article
AN - SCOPUS:84973573504
VL - 26
SP - 5940
EP - 5946
JO - Advanced Functional Materials
JF - Advanced Functional Materials
SN - 1616-301X
IS - 32
ER -