The development of
flexible materials with higher piezoelectric
properties and electrostrictive response is of great significance
in many applications such as wearable functional devices, flexible
sensors, and actuators. In this study, we report an efficient fabrication
strategy to construct a highly sensitive (0.72 kPa
–1
), red light-emitting flexible pressure sensor using electrospun
Eu
3+
-doped polyvinylidene fluoride–hexafluoropropylene/graphene
oxide composite nanofibers using a layer-by-layer technology. The
high β-phase concentration (96.3%) was achieved from the Eu
3+
-doped P(VDF-HFP)/GO nanofibers, leading to a high piezoelectricity
of the composite nanofibers. We observed that a pressure sensor is
enabled to generate an output voltage of 4.5 V. Furthermore, Eu
3+
-doped P(VDF-HFP)/GO composite nanofiber-based pressure sensors
can also be used as an actuator as it has a good electrostrictive
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.
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