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AuthorAzmer, Mohamad Izzat
AuthorAziz, Fakhra
AuthorAhmad, Zubair
AuthorRaza, Ehsan
AuthorNajeeb, Mansoor Ani
AuthorFatima, Noshin
AuthorBawazeer, Tahani M.
AuthorAlsoufi, Mohammad S.
AuthorShakoor, R.A.
AuthorSulaiman, Khaulah
Available date2020-10-01T05:53:34Z
Publication Date2017
Publication NameTalanta
ResourceScopus
ISSN399140
URIhttp://dx.doi.org/10.1016/j.talanta.2017.06.016
URIhttp://hdl.handle.net/10576/16325
AbstractThis research work demonstrates compositional engineering of an organic-inorganic hybrid nano-composites for modifying absolute threshold of humidity sensors. Vanadyl-2,9,16,23-tetraphenoxy-29H,31H-phthalocyanine (VOPcPhO), an organic semiconductor, doped with Titanium-dioxide nanoparticles (TiO2 NPs) has been employed to fabricate humidity sensors. The morphology of the VOPcPhO:TiO2 nano-composite films has been analyzed by atomic force microscopy (AFM) and field emission scanning electron microscopy (FESEM). The sensors have been examined over a wide range of relative humidity i.e. 20-99% RH. The sensor with TiO2 (90 nm) shows reduced sensitivity-threshold and improved linearity. The VOPcPhO:TiO2 (90 nm) nano-composite film is comprised of uniformly distributed voids which makes the surface more favorable for adsorption of moisture content from environment. The VOPcPhO:TiO2 nano-composite based sensor demonstrates remarkable improvement in the sensing parameter when equated with VOPcPhO sensors.
Languageen
PublisherElsevier B.V.
SubjectAbsolute threshold
Compositional engineering
Nano-composite
Relative humidity
VOPcPhO:TiO2
TitleCompositional engineering of VOPcPhO-TiO2 nano-composite to reduce the absolute threshold value of humidity sensors
TypeArticle
Pagination279-284
Volume Number174
dc.accessType Abstract Only


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