Eu3+-Doped Electrospun Polyvinylidene Fluoride–Hexafluoropropylene/Graphene Oxide Multilayer Composite Nanofiber for the Fabrication of Flexible Pressure Sensors
writer：Qisong Shi
keywords：Piezoelectric; Fluorescent; Sandwich-structured; Electrostrictive; Flexible pressure
source：期刊
specific source：ACS Omega
Issue time：2022年
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.