AUTHOR=Hu Xiaoran , You Mengli , Yi Na , Zhang Xiaokun , Xiang Yong 

TITLE=Enhanced Piezoelectric Coefficient of PVDF-TrFE Films via In Situ Polarization

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2021.621540

DOI=10.3389/fenrg.2021.621540

ISSN=2296-598X

ABSTRACT=The 10X times of d33 coefficient of PVDF-TrFE piezoelectric films were achieved by the in-situ polarization. Compared with traditional polar methods, the in-situ polarization was performed with low poling voltage, short poling time, and can ensure the obtained PVDF-TrFE film with enhanced piezoelectric performances and uniform distribution among large area of 200 × 200 mm2. The processing influence of drying, annealing and poling on the crystalline properties and piezoelectric performances were investigated. Besides, the obtained PVDF-TrFE films present good piezoelectric response to different extent of mechanical stimulations, which has great potential in energy harvesting applications.