Photovoltaic and Piezoelectric Power Generation Characteristics of Flexible Poly(Vinylidene Fluoride-Ran-Trifluoroethylene) Thin Films

IF 3.9 3区化学 Q2 POLYMER SCIENCE

Journal of Polymer Science Pub Date : 2024-12-22 DOI:10.1002/pol.20240749

Eunmi Lee, Jong Yeog Son

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Abstract

We investigated the photovoltaic and piezoelectric power generation characteristics of ferroelectric poly(vinylidene fluoride-ran-trifluoroethylene, PVDF-TrFE) thin films on flexible indium tin oxide (ITO)/polyethylene terephthalate (PET) substrates. The solar cells and piezoelectric hybrid devices provide consistent energy to extend battery life and improve self-charging. The flexible PVDF-TrFE thin films with a transmittance of about 60% in the visible region showed a remanent polarization of about 10.5 μC/cm² (2P_r ~ 21.0 μC/cm²) with excellent β-phase formation. The flexible PVDF-TrFE thin films exhibited optimal ferroelectric and piezoelectric properties by exhibiting β-phase without α-phase. Since β-phase is the phase that carries high dipole alignment of the material, which is important for maximizing power output, the performance of the material in photovoltaic and piezoelectric applications is enhanced. The PVDF-TrFE capacitor exhibited not only a piezoelectric generation characteristic with an approximate voltage of 1.1 V under compression, but also a photovoltaic generation feature with an open-circuit voltage of about 0.23 V and a short-circuit current of approximately 0.13 mA/cm².

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来源期刊

Journal of Polymer Science POLYMER SCIENCE-

CiteScore

6.30

自引率

5.90%

发文量

264

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology.