Vertically aligned P(VDF-TrFE) core-shell structures on flexible pillar arrays
- Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Department of Materials Science and Engineering; Argonne National Lab. (ANL), Argonne, IL (United States)
- Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Graduate School of Energy Environment Water Sustainability
- Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Department of Materials Science and Engineering
- Argonne National Lab. (ANL), Lemont, IL (United States). Nuclear Engineering Division
PVDF and P(VDF-TrFE) nano-and micro-structures have been widely used due to their potential applications in several fields, including sensors, actuators, vital sign transducers, and energy harvesters. In this study, we developed vertically aligned P(VDF-TrFE) core-shell structures using high modulus polyurethane acrylate (PUA) pillars as the support structure to maintain the structural integrity. In addition, we were able to improve the piezoelectric effect by 1.85 times from 40 +/- 2 to 74 +/- 2 pm/V when compared to the thin film counterpart, which contributes to the more efficient current generation under a given stress, by making an effective use of the P(VDF-TrFE) thin top layer as well as the side walls. We attribute the enhancement of piezoelectric effects to the contributions from the shell component and the strain confinement effect, which was supported by our modeling results. We envision that these organic- based P(VDF-TrFE) core-shell structures will be used widely as 3D sensors and power generators because they are optimized for current generations by utilizing all surface areas, including the side walls of core-shell structures.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- National Research Foundation of Korea (NRF); USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-06CH11357; 2010-0015063; 2011K000674; 20103020060010; 2014R1A4A1003712; SC1100
- OSTI ID:
- 1221905
- Alternate ID(s):
- OSTI ID: 1356242
- Journal Information:
- Scientific Reports, Vol. 5; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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