Статья

A Full-Range Flexible and Printed Humidity Sensor Based on a Solution-Processed P(VDF-TrFE)/Graphene-Flower Composite

Shenawar Ali KhanDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaMuhammad SaqibDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaMuhammad Muqeet RehmanDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaHafiz Mohammad Mutee Ur RehmanDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaSheik Abdur RahmanDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaYunsook YangDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaSeongwan KimDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaWoo Young KimDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, Korea

2021en

ABI

Аннотация

A novel composite based on a polymer (P(VDF-TrFE)) and a two-dimensional material (graphene flower) was proposed as the active layer of an interdigitated electrode (IDEs) based humidity sensor. Silver (Ag) IDEs were screen printed on a flexible polyethylene terephthalate (PET) substrate followed by spin coating the active layer of P(VDF-TrFE)/graphene flower on its surface. It was observed that this sensor responds to a wide relative humidity range (RH%) of 8-98% with a fast response and recovery time of 0.8 s and 2.5 s for the capacitance, respectively. The fabricated sensor displayed an inversely proportional response between capacitance and RH%, while a directly proportional relationship was observed between its impedance and RH%. P(VDF-TrFE)/graphene flower-based flexible humidity sensor exhibited high sensitivity with an average change of capacitance as 0.0558 pF/RH%. Stability of obtained results was monitored for two weeks without any considerable change in the original values, signifying its high reliability. Various chemical, morphological, and electrical characterizations were performed to comprehensively study the humidity-sensing behavior of this advanced composite. The fabricated sensor was successfully used for the applications of health monitoring and measuring the water content in the environment.

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Идентификаторы

DOI: 10.3390/nano11081915

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar