A small-molecule organic ferroelectric with piezoelectric voltage coefficient larger than that of lead zirconate titanate and polyvinylidene difluoride

A small-molecule organic ferroelectric (3,3-DFCBA)Cl has high piezoelectric voltage coefficients g 33 (437.2 × 10 −3 V m N −1 ), a large electrostriction coefficient Q 33 , and low acoustic impedance z 0 , far beyond that of PZT and PVDF.