A Full-Range Flexible and Printed Humidity Sensor Based on a Solution-Processed P(VDF-TrFE)/Graphene-Flower Composite
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...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/8/1915 |
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| author | Shenawar Ali Khan Muhammad Saqib Muhammad Muqeet Rehman Hafiz Mohammad Mutee Ur Rehman Sheik Abdur Rahman Yunsook Yang Seongwan Kim Woo-Young Kim |
| author_facet | Shenawar Ali Khan Muhammad Saqib Muhammad Muqeet Rehman Hafiz Mohammad Mutee Ur Rehman Sheik Abdur Rahman Yunsook Yang Seongwan Kim Woo-Young Kim |
| author_sort | Shenawar Ali Khan |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T08:32:43Z |
| format | Article |
| id | doaj.art-e4f77969af394e88a9b32589aa50a9fe |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T08:32:43Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-e4f77969af394e88a9b32589aa50a9fe2023-11-22T08:57:40ZengMDPI AGNanomaterials2079-49912021-07-01118191510.3390/nano11081915A Full-Range Flexible and Printed Humidity Sensor Based on a Solution-Processed P(VDF-TrFE)/Graphene-Flower CompositeShenawar Ali Khan0Muhammad Saqib1Muhammad Muqeet Rehman2Hafiz Mohammad Mutee Ur Rehman3Sheik Abdur Rahman4Yunsook Yang5Seongwan Kim6Woo-Young Kim7Department of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaDepartment of Electronic Engineering, Jeju National University, 102 Jejudaehakro, Jeju 63243, KoreaA 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.https://www.mdpi.com/2079-4991/11/8/1915humidity sensorP(VDF-TrFE)/graphene flower compositeflexiblesolution processedhealth monitoring |
| spellingShingle | Shenawar Ali Khan Muhammad Saqib Muhammad Muqeet Rehman Hafiz Mohammad Mutee Ur Rehman Sheik Abdur Rahman Yunsook Yang Seongwan Kim Woo-Young Kim A Full-Range Flexible and Printed Humidity Sensor Based on a Solution-Processed P(VDF-TrFE)/Graphene-Flower Composite Nanomaterials humidity sensor P(VDF-TrFE)/graphene flower composite flexible solution processed health monitoring |
| title | A Full-Range Flexible and Printed Humidity Sensor Based on a Solution-Processed P(VDF-TrFE)/Graphene-Flower Composite |
| title_full | A Full-Range Flexible and Printed Humidity Sensor Based on a Solution-Processed P(VDF-TrFE)/Graphene-Flower Composite |
| title_fullStr | A Full-Range Flexible and Printed Humidity Sensor Based on a Solution-Processed P(VDF-TrFE)/Graphene-Flower Composite |
| title_full_unstemmed | A Full-Range Flexible and Printed Humidity Sensor Based on a Solution-Processed P(VDF-TrFE)/Graphene-Flower Composite |
| title_short | A Full-Range Flexible and Printed Humidity Sensor Based on a Solution-Processed P(VDF-TrFE)/Graphene-Flower Composite |
| title_sort | full range flexible and printed humidity sensor based on a solution processed p vdf trfe graphene flower composite |
| topic | humidity sensor P(VDF-TrFE)/graphene flower composite flexible solution processed health monitoring |
| url | https://www.mdpi.com/2079-4991/11/8/1915 |
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