Ultrasensitive mechanical/thermal response of a P(VDF-TrFE) sensor with a tailored network interconnection interface

Li，Bo1; Cai，Chuanyang2; Liu，Yang3; Wang，Fang4; Yang，Bin1; Li，Qikai1; Zhang，Pengxiang1; Deng，Biao1; Hou，Pengfei2; Liu，Weishu1

2023-12-01

10.1038/s41467-023-39476-4

Nature Communications   Impact Factor & Quartile

2041-1723

Ferroelectric polymers have great potential applications in mechanical/thermal sensing, but their sensitivity and detection limit are still not outstanding. We propose interface engineering to improve the charge collection in a ferroelectric poly(vinylidene fluoride-co-trifluoroethylene) copolymer (P(VDF-TrFE)) thin film via cross-linking with poly(3,4-ethylenedioxythiophene) doped with polystyrenesulfonate (PEDOT:PSS) layer. The as-fabricated P(VDF-TrFE)/PEDOT:PSS composite film exhibits an ultrasensitive and linear mechanical/thermal response, showing sensitivities of 2.2 V kPa in the pressure range of 0.025–100 kPa and 6.4 V K in the temperature change range of 0.05–10 K. A corresponding piezoelectric coefficient of −86 pC N and a pyroelectric coefficient of 95 μC m K are achieved because more charge is collected by the network interconnection interface between PEDOT:PSS and P(VDF-TrFE), related to the increase in the dielectric properties. Our work shines a light on a device-level technique route for boosting the sensitivity of ferroelectric polymer sensors through electrode interface engineering.

SCI

English

NI Journal Papers ; NI论文

First ; Corresponding

National Natural Science Foundation of China-Yunnan Joint Fund[12175191];National Natural Science Foundation of China-Yunnan Joint Fund[12274152];Natural Science Foundation of Guangdong Province[2023A1515012638];

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:001026219000002

NATURE PORTFOLIO

2-s2.0-85164254122

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
2.School of Materials Science and Engineering,Xiangtan University,Xiangtan,Hunan,411105,China
3.State Key Laboratory of Material Processing and Die & Mould Technology,School of Materials Science and Engineering,Huazhong University of Science & Technology,Wuhan,430074,China
4.Institute of Biomedical & Health Engineering,Shenzhen Institute of Advanced Technology (SIAT),Chinese Academy of Sciences (CAS),Shenzhen,518055,China

Li，Bo,Cai，Chuanyang,Liu，Yang,et al. Ultrasensitive mechanical/thermal response of a P(VDF-TrFE) sensor with a tailored network interconnection interface[J]. Nature Communications,2023,14(1).

Li，Bo.,Cai，Chuanyang.,Liu，Yang.,Wang，Fang.,Yang，Bin.,...&Liu，Weishu.(2023).Ultrasensitive mechanical/thermal response of a P(VDF-TrFE) sensor with a tailored network interconnection interface.Nature Communications,14(1).

Li，Bo,et al."Ultrasensitive mechanical/thermal response of a P(VDF-TrFE) sensor with a tailored network interconnection interface".Nature Communications 14.1(2023).