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AuthorFatima, Noshin
AuthorAziz, Fakhra
AuthorAhmad, Zubair
AuthorNajeeb, M. A.
AuthorAzmeer, M. I.
AuthorKarimov, Kh. S.
AuthorAhmed, M. M.
AuthorBasheer, S.
AuthorShakoor, R. A.
AuthorSulaiman, K.
Available date2022-10-05T07:23:07Z
Publication Date2017
Publication NameRSC Advances
ResourceScopus
URIhttp://dx.doi.org/10.1039/c7ra02525d
URIhttp://hdl.handle.net/10576/34847
AbstractThis study exhibits a solution-processed organic semiconductor humidity sensor based on vanadyl 2,9,16,23-tetraphenoxy-29H,31H-phthalocyanine (VOPcPhO), tris-(8-hydroxy-quinoline)aluminum (Alq3), and their composites. Compositional engineering of the VOPcPhO : Alq3 complex was performed to develop a sensitive humidity sensor with a linear response. Thin films of VOPcPhO, Alq3, and composites were spin-coated over pre-deposited aluminum (Al) electrodes, whereas the other electrodes were deposited through a thermal evaporation technique. Both capacitive and resistive responses were measured as a function of different relative humidity levels. Morphological and structural properties of the organic thin films were characterized by atomic force microscopy (AFM), field emission scanning electron microscopy (FESEM), and Fourier transform infrared spectroscopy (FTIR). Compared to the VOPcPhO and Alq3 stand-alone sensors, the VOPcPhO : Alq3 composite-based sensor demonstrated superior performance with significantly improved sensing parameters, highlighting unique advantages of the low-molecular composite-based thin film organic humidity sensors.
SponsorThe authors are thankful to Capital University of Science and Technology Islamabad, University of Malaya, Malaysia, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology and Center for Advanced Materials (CAM), Qatar University for their exclusive support during this research work.
Languageen
PublisherRoyal Society of Chemistry
SubjectVOPcPhO
Alq3
atomic force microscopy (AFM)
field emission scanning electron microscopy (FESEM)
Fourier transform infrared spectroscopy (FTIR)
TitleCompositional engineering of the pi-conjugated small molecular VOPcPhO : Alq3 complex to boost humidity sensing
TypeArticle
Pagination19780-19786
Issue Number32
Volume Number7
dc.accessType Open Access


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