Effect of particle size and morphology on the performance of BiFeO3-PDMS piezoelectric generators

Kohei Yoshiyama, Masae Mori, Manabu Hagiwara, Shinobu Fujihara

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Piezoelectric oxide-polymer composite generators have attracted increasing attention for sensoring and energy-harvesting applications. In this work, the effect of the size and morphology of BiFeO3(BFO) particles on the performance of BFO-poly(dimethylsiloxane) (PDMS) composite generators is revealed. Three kinds of BFO particles—nanoparticles, microspheres, and microplates—were synthesizedviasolution synthesis routes and applied to BFO-PDMS composite films. The BFO microplates were found to be preferentially oriented along the pseudocubic <100> direction in the composite film due to their anisotropic morphology, while the nanoparticles and microspheres were not oriented. The composite film fabricated from the BFO microplates generated a higher open-circuit voltage in response to an applied compressive force compared to the other films. The effect of the particle size and morphology on the open-circuit voltage was discussed in terms of the dispersion and polarized states of the particles.

Original languageEnglish
Pages (from-to)2919-2925
Number of pages7
Issue number17
Publication statusPublished - 2020 May 7

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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