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

doi:10.1111/jace.13238

High-performance (Na_0.5K_0.5)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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

The pseudocubic structure of a (Na_0.5K_0.5)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 language	English
Pages (from-to)	119-124
Number of pages	6
Journal	Journal of the American Ceramic Society
Volume	98
Issue number	1
DOIs	https://doi.org/10.1111/jace.13238
Publication status	Published - 2015 Jan 1

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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title = "High-performance (Na0.5K0.5)NbO3 thin film piezoelectric energy harvester",

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.",

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

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doi = "10.1111/jace.13238",

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AU - Kim, Bo Yun

AU - Seo, In Tae

AU - Lee, Youn Seon

AU - Kim, Jin Seong

AU - Nahm, Sahn

AU - Kang, Chong-Yun

AU - Yoon, Seok Jin

AU - Paik, Jong Hoo

AU - Jeong, Young Hun

PY - 2015/1/1

Y1 - 2015/1/1

N2 - 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.

AB - 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.

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High-performance (Na_0.5K_0.5)NbO₃ thin film piezoelectric energy harvester

Abstract

ASJC Scopus subject areas

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