High-performance (Na0.5K0.5)NbO3 thin film piezoelectric energy harvester

Bo Yun Kim, In Tae Seo, Youn Seon Lee, Jin Seong Kim, Sahn Nahm, Chong-Yun Kang, Seok Jin Yoon, Jong Hoo Paik, Young Hun Jeong

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The pseudocubic structure of a (Na0.5K0.5)NbO3 (NKN) film grown on a Pt/Ti/SiO2/Si substrate changed to an orthorhombic structure when the film was transferred onto a polyimide substrate. Piezoelectric constant for the transferred NKN film increased considerably from 74 ± 11 to 120 ± 18 pm/V because the crystal structure of the film had changed from pseudocubic to orthorhombic. A gold interdigitated electrode was deposited onto the transferred NKN film to synthesize a NKN piezoelectric energy harvester. The NKN piezoelectric energy harvester was poled before bending under a 100 kV/cm DC electric field across the electrodes. When a strain of 0.85% and a strain rate of 4.05%/s were applied to the NKN piezoelectric energy harvester, it produced a maximum output voltage of 1.9 V and a current of 38 nA, corresponding to a power density of 2.89 μW/cm3.

Original languageEnglish
Pages (from-to)119-124
Number of pages6
JournalJournal of the American Ceramic Society
Volume98
Issue number1
DOIs
Publication statusPublished - 2015 Jan 1

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Harvesters
Thin films
energy
electrode
substrate
Electrodes
Substrates
strain rate
Polyimides
crystal structure
Gold
electric field
Strain rate
gold
Crystal structure
Electric fields
Electric potential

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Kim, B. Y., Seo, I. T., Lee, Y. S., Kim, J. S., Nahm, S., Kang, C-Y., ... Jeong, Y. H. (2015). High-performance (Na0.5K0.5)NbO3 thin film piezoelectric energy harvester. Journal of the American Ceramic Society, 98(1), 119-124. https://doi.org/10.1111/jace.13238

High-performance (Na0.5K0.5)NbO3 thin film piezoelectric energy harvester. / Kim, Bo Yun; Seo, In Tae; Lee, Youn Seon; Kim, Jin Seong; Nahm, Sahn; Kang, Chong-Yun; Yoon, Seok Jin; Paik, Jong Hoo; Jeong, Young Hun.

In: Journal of the American Ceramic Society, Vol. 98, No. 1, 01.01.2015, p. 119-124.

Research output: Contribution to journalArticle

Kim, BY, Seo, IT, Lee, YS, Kim, JS, Nahm, S, Kang, C-Y, Yoon, SJ, Paik, JH & Jeong, YH 2015, 'High-performance (Na0.5K0.5)NbO3 thin film piezoelectric energy harvester', Journal of the American Ceramic Society, vol. 98, no. 1, pp. 119-124. https://doi.org/10.1111/jace.13238
Kim, Bo Yun ; Seo, In Tae ; Lee, Youn Seon ; Kim, Jin Seong ; Nahm, Sahn ; Kang, Chong-Yun ; Yoon, Seok Jin ; Paik, Jong Hoo ; Jeong, Young Hun. / High-performance (Na0.5K0.5)NbO3 thin film piezoelectric energy harvester. In: Journal of the American Ceramic Society. 2015 ; Vol. 98, No. 1. pp. 119-124.
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