Flexible organic ferroelectric films with a large piezoelectric response

Wenxiu Gao; Lei Chang; He Ma; Lu You; Jiang Yin; Junming Liu; Zhiguo Liu; Junling Wang; Guoliang Yuan

doi:10.1038/am.2015.54

Flexible organic ferroelectric films with a large piezoelectric response

Wenxiu Gao, Lei Chang, He Ma, Lu You, Jiang Yin, Junming Liu, Zhiguo Liu, Junling Wang^*, Guoliang Yuan

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

55 Citations (Scopus)

2 Downloads (CityUHK Scholars)

Abstract

Compared with ferroelectric oxides, organic ferroelectric materials are lightweight, flexible and easy to process. They are ideal for applications in the next-generation portable electronics. Here, we demonstrate the room-temperature growth of imidazolium perchlorate (C₃N₂H₅ClO₄) ferroelectric films on various substrates, including Pt-coated Si, quartz and, more importantly, on flexible and transparent polyethylene terephthalate (PET). The films have a preferred (0 - 1 - 1) or (1 0 - 1) orientation. The former shows a piezoelectric response comparable with the response of the Pb(Zr_0.2Ti_0.8)O₃ film. This is attributed to the smaller elastic constant of the film, which makes it less susceptible to substrate clamping. When grown on PET, the film is transparent and can be bent to radii of a few millimetres without affecting its ferroelectric properties. Our discovery may significantly promote the application of molecular ferroelectrics in flexible and transparent electronics. © 2015 Nature Publishing Group All rights reserved.

Original language	English
Article number	e189
Journal	NPG Asia Materials
Volume	7
Issue number	6
DOIs	https://doi.org/10.1038/am.2015.54
Publication status	Published - 26 Jun 2015
Externally published	Yes

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abstract = "Compared with ferroelectric oxides, organic ferroelectric materials are lightweight, flexible and easy to process. They are ideal for applications in the next-generation portable electronics. Here, we demonstrate the room-temperature growth of imidazolium perchlorate (C3N2H5ClO4) ferroelectric films on various substrates, including Pt-coated Si, quartz and, more importantly, on flexible and transparent polyethylene terephthalate (PET). The films have a preferred (0 - 1 - 1) or (1 0 - 1) orientation. The former shows a piezoelectric response comparable with the response of the Pb(Zr0.2Ti0.8)O3 film. This is attributed to the smaller elastic constant of the film, which makes it less susceptible to substrate clamping. When grown on PET, the film is transparent and can be bent to radii of a few millimetres without affecting its ferroelectric properties. Our discovery may significantly promote the application of molecular ferroelectrics in flexible and transparent electronics. {\textcopyright} 2015 Nature Publishing Group All rights reserved.",

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AU - Gao, Wenxiu

AU - Chang, Lei

AU - Ma, He

AU - You, Lu

AU - Yin, Jiang

AU - Liu, Junming

AU - Liu, Zhiguo

AU - Wang, Junling

AU - Yuan, Guoliang

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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N2 - Compared with ferroelectric oxides, organic ferroelectric materials are lightweight, flexible and easy to process. They are ideal for applications in the next-generation portable electronics. Here, we demonstrate the room-temperature growth of imidazolium perchlorate (C3N2H5ClO4) ferroelectric films on various substrates, including Pt-coated Si, quartz and, more importantly, on flexible and transparent polyethylene terephthalate (PET). The films have a preferred (0 - 1 - 1) or (1 0 - 1) orientation. The former shows a piezoelectric response comparable with the response of the Pb(Zr0.2Ti0.8)O3 film. This is attributed to the smaller elastic constant of the film, which makes it less susceptible to substrate clamping. When grown on PET, the film is transparent and can be bent to radii of a few millimetres without affecting its ferroelectric properties. Our discovery may significantly promote the application of molecular ferroelectrics in flexible and transparent electronics. © 2015 Nature Publishing Group All rights reserved.

AB - Compared with ferroelectric oxides, organic ferroelectric materials are lightweight, flexible and easy to process. They are ideal for applications in the next-generation portable electronics. Here, we demonstrate the room-temperature growth of imidazolium perchlorate (C3N2H5ClO4) ferroelectric films on various substrates, including Pt-coated Si, quartz and, more importantly, on flexible and transparent polyethylene terephthalate (PET). The films have a preferred (0 - 1 - 1) or (1 0 - 1) orientation. The former shows a piezoelectric response comparable with the response of the Pb(Zr0.2Ti0.8)O3 film. This is attributed to the smaller elastic constant of the film, which makes it less susceptible to substrate clamping. When grown on PET, the film is transparent and can be bent to radii of a few millimetres without affecting its ferroelectric properties. Our discovery may significantly promote the application of molecular ferroelectrics in flexible and transparent electronics. © 2015 Nature Publishing Group All rights reserved.

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Flexible organic ferroelectric films with a large piezoelectric response

Abstract

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