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Flexible and Transparent Ionic Liquids/Poly(vinylidene fluoride) Composition‐Gradient Piezo‐Active Composites for Highly Sensitive Pressure Sensor.
- Source :
- Advanced Electronic Materials; Feb2023, Vol. 9 Issue 2, p1-13, 13p
- Publication Year :
- 2023
-
Abstract
- Nowadays, the advent of pressure sensors for intelligence terminal devices and skin‐inspired electronics has trigged rapid development of flexible, sensitive, and transparent sensing materials. Piezo‐active poly(vinylidene fluoride) (PVDF) is emerging as a promising candidate for sensing components due to the flexible and transparent features. However, the inherent weak piezo‐activity and consequently low sensitivity of PVDF remains a challenge for its sensing applications. Herein, ionic liquids ([EMIM]Cl) additive combined with a composition‐gradient multilayered architecture design are employed to hardness the piezo‐response of PVDF. The resultant composites present ultra‐high piezoelectric coefficient d33 of 39 pC N−1, which is 2.78 times that of PVDF. Meanwhile, the transparent ILs dopant enables the composites with superior transparency (87%). With notable advantages of high transparency and piezoelectricity, the ILs/PVDF composites exhibit high sensitivity of 0.0423 V N−1, ultra‐fast recovery time of 0.2 ms and stable operation capability when coupled with metal electrodes, confirming their applicability for reliable pressure sensor. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 2199160X
- Volume :
- 9
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Advanced Electronic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 161826462
- Full Text :
- https://doi.org/10.1002/aelm.202201013