Manufacturing method of polarizing polyvinylidene fluoride piezoelectric film without metalized electrode and system having the same

摘要

A manufacturing method of polarizing polyvinylidene fluoride (PVDF) piezoelectric film without metalized electrode includes providing a polyvinylidene fluoride (PVDF) piezoelectric film that is stretched into β phase; providing two glass substrates having an indium tin oxide (ITO) layer respectively, wherein the PVDF piezoelectric film is located between the two glass substrates, and the two ITO layers are coated located separately on top of and below the PVDF piezoelectric film; and imposing a DC electric field onto two ITO layers, wherein the DC electric field of polarization is 400 to 900 kV/cm approximately.