The development of flexible materials with higher piezoelectric properties

and electrostrictive response is of great significance in many application

fields such as wearable functional devices, flexible sensors and actuators. In

this study, we report an efficient fabrication strategy to construct a highly

sensitive (0.72kPa-1), red light-emit flexible pressure sensor by

electrospun Eu3+ doped P(VDF-HFP)/GO composite nanofibers using

layer-by-layer technology. The high β-phase concentration (96.3%) was achieved

from the Eu3+ doped P(VDF-HFP)/GO nanofibers, leading to a high

piezoelectricity of the composite nanofibers. We observed that pressure sensor

is enabled to generate an output voltage of 4.5V. Furthermore, Eu3+

doped P(VDF-HFP)/Go composite nanofibers-based pressure sensors can also be

used as an actuator as it has good electro strictive effect. At the same time,

the nanofiber membrane has excellent ferroelectric properties and good

fluorescence properties. These results indicate that this material has great

application potential in the fields of photoluminescent fabrics, flexible

sensors, soft actuators, and energy storage devices.