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AuthorKhouloud, Jlassi
AuthorMallick, Shoaib
AuthorBen Ali, Ahmed
AuthorMutahir, Hafsa
AuthorSalauddin, Sayma Akhter
AuthorAhmad, Zubair
AuthorTennouga, Lahcene
AuthorChehimi, Mohamed
Available date2023-09-18T04:36:30Z
Publication Date2023-09-12
Publication NameApplied Physics A Materials Science & Processing
Identifierhttp://dx.doi.org/10.1007/s00339-023-06908-3
CitationJlassi, K., Mallick, S., Ali, A.B. et al. Polyvinylpyridine–carbon dots composite-based novel humidity sensor. Appl. Phys. A 129, 691 (2023). https://doi.org/10.1007/s00339-023-06908-3
ISSN0947-8396
URIhttp://hdl.handle.net/10576/47583
AbstractThis work describes the rational design of thin films based on PVP-modified carbon dots for potential resistive humidity sensing application, prepared via spin coating on ITO substrates. The modified carbon dots were manufactured from graphite waste and modified with PVP to test the synergetic effect of the two materials. The surface hydrophilicity, morphology, and sensing properties were studied. AFM has been performed to investigate the prepared films’ texture and distribution over the surface. Overall, the hydrophilicity of the prepared films increases with concentration, leading to enhanced water vapor absorption on the surface of the sensing film. As a result, the sensor’s sensitivity is improved with the increasing concentration of PVP–CDs. The electrical response of the PVP–CDs composite film sensor shows a higher sensitivity level above 80% RH sensor with an irregular response; however, the concentration of 0.5 wt%, higher sensitivity, and linear change in impedance response was noted compared to other concentrations.
SponsorOpen Access funding provided by the Qatar National Library. This research received no specific grant from public, commercial, or not-for-profit funding agencies.
Languageen
PublisherSpringer
SubjectPolyvinylpyridine
Carbon dots
Humidity sensor
Sensing mechanism
TitlePolyvinylpyridine–carbon dots composite-based novel humidity sensor
TypeArticle
Pagination691
Issue Number10
Volume Number129
ESSN1432-0630
dc.accessType Full Text


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