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High-performance piezoelectric energy harvesting in amorphous perovskite thin films deposited directly on a plastic substrate

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  • Ju Han

    (Yonsei University)

  • Sung Hyun Park

    (Yonsei University)

  • Ye Seul Jung

    (Yonsei University)

  • Yong Soo Cho

    (Yonsei University)

Abstract

Most reported thin-film piezoelectric energy harvesters have been based on cantilever-type crystalline ferroelectric oxide thin films deposited on rigid substrates, which utilize vibrational input sources. Herein, we introduce flexible amorphous thin-film energy harvesters based on perovskite CaCu3Ti4O12 (CCTO) thin films on a plastic substrate for highly competitive electromechanical energy harvesting. The room-temperature sputtering of CCTO thin films enable the use of plastic substrates to secure reliable flexibility, which has not been available thus far. Surprisingly, the resultant amorphous nature of the films results in an output voltage and power density of ~38.7 V and ~2.8 × 106 μW cm−3, respectively, which break the previously reported record for typical polycrystalline ferroelectric oxide thin-film cantilevers. The origin of this excellent electromechanical energy conversion is systematically explored as being related to the localized permanent dipoles of TiO6 octahedra and lowered dielectric constant in the amorphous state, depending on the stoichiometry and defect states. This is the leading example of a high-performance flexible piezoelectric energy harvester based on perovskite oxides not requiring a complex process for transferring films onto a plastic substrate.

Suggested Citation

  • Ju Han & Sung Hyun Park & Ye Seul Jung & Yong Soo Cho, 2024. "High-performance piezoelectric energy harvesting in amorphous perovskite thin films deposited directly on a plastic substrate," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48551-3
    DOI: 10.1038/s41467-024-48551-3
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    References listed on IDEAS

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    1. Nick A. Shepelin & Peter C. Sherrell & Emmanuel N. Skountzos & Eirini Goudeli & Jizhen Zhang & Vanessa C. Lussini & Beenish Imtiaz & Ken Aldren S. Usman & Greg W. Dicinoski & Joseph G. Shapter & Josel, 2021. "Interfacial piezoelectric polarization locking in printable Ti3C2Tx MXene-fluoropolymer composites," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    2. Sangtae Kim & Soon Ju Choi & Kejie Zhao & Hui Yang & Giorgia Gobbi & Sulin Zhang & Ju Li, 2016. "Electrochemically driven mechanical energy harvesting," Nature Communications, Nature, vol. 7(1), pages 1-7, April.
    3. Yuzhong Hu & Kaushik Parida & Hao Zhang & Xin Wang & Yongxin Li & Xinran Zhou & Samuel Alexander Morris & Weng Heng Liew & Haomin Wang & Tao Li & Feng Jiang & Mingmin Yang & Marin Alexe & Zehui Du & C, 2022. "Bond engineering of molecular ferroelectrics renders soft and high-performance piezoelectric energy harvesting materials," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
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