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<p>Polyvinylidene Fluoride (PVDF) is known for its applications in electronic sensors and exhibits specific functional behaviours, including high thermal stability, piezoelectric behaviour, chemical resistance, and ferroelectric properties. However, its dielectric properties are limited due to its low dielectric constant. This study aims to enhance the functional characteristics and reduction of dielectric loss of PVDF configured with Trifluoroethylene (TrFE) in various ratios, specifically 60:40, 65:35, 70:30, and 75:25, fabricated via spin coating and processed through thermal annealing at 140 ℃, followed by electrical poling to improve their durability and performance. The results revealed that 70:30 PVDF: TrFE composition demonstrated improved device performance with better piezoelectric properties, achieving a piezoelectric coefficient (d<sub>33</sub>) of 33 pC/N, high output voltage of 2.2&#xa0;V and sensitivity (3.15&#xa0;V/N) among all the compositions. This composition exhibited the highest dielectric constant of 47.2, minimal dielectric loss (0.018), enhanced crystallinity with a crystalline size of 16.8&#xa0;nm, and phase alignment. These synergistic enhancements illustrated that TrFE-incorporated PVDF films facilitated high permittivity, minimal dissipation loss, and superior piezoelectric output. Thus, the present study highlights the significance and potential of TrFE-incorporated PVDF in high-performance piezoelectric sensor applications.</p>

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Influences and processing on piezoelectric and reduction of dielectric loss of Trifluoroethylene configured Polyvinylidene Fluoride piezoelectric sensor

  • 期刊论文

  • 发表日期：

    2026年4月13日

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  • M. Aruna,
  • N. Nagabhooshanam,
  • Rintu Kumar,
  • Mamata Chahar,
  • T. Sudhakar,
  • N B C S N Murthy,
  • Ramya Maranan,
  • M. Murali,
  • S. Sathiyamurthy

摘要

Polyvinylidene Fluoride (PVDF) is known for its applications in electronic sensors and exhibits specific functional behaviours, including high thermal stability, piezoelectric behaviour, chemical resistance, and ferroelectric properties. However, its dielectric properties are limited due to its low dielectric constant. This study aims to enhance the functional characteristics and reduction of dielectric loss of PVDF configured with Trifluoroethylene (TrFE) in various ratios, specifically 60:40, 65:35, 70:30, and 75:25, fabricated via spin coating and processed through thermal annealing at 140 ℃, followed by electrical poling to improve their durability and performance. The results revealed that 70:30 PVDF: TrFE composition demonstrated improved device performance with better piezoelectric properties, achieving a piezoelectric coefficient (d33) of 33 pC/N, high output voltage of 2.2 V and sensitivity (3.15 V/N) among all the compositions. This composition exhibited the highest dielectric constant of 47.2, minimal dielectric loss (0.018), enhanced crystallinity with a crystalline size of 16.8 nm, and phase alignment. These synergistic enhancements illustrated that TrFE-incorporated PVDF films facilitated high permittivity, minimal dissipation loss, and superior piezoelectric output. Thus, the present study highlights the significance and potential of TrFE-incorporated PVDF in high-performance piezoelectric sensor applications.