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AuthorFatima, Noshin
AuthorAhmed, Muhammad M
AuthorKarimov, Khasan S
AuthorAhmad, Zubair
AuthorMuhammad, Fahmi Fariq
Available date2020-09-20T08:35:38Z
Publication Date2017
Publication NameChinese Physics B
ResourceScopus
ISSN16741056
URIhttp://dx.doi.org/10.1088/1674-1056/26/6/060704
URIhttp://hdl.handle.net/10576/16181
AbstractIn this study, solution processed composite films of nickel phthalocyanine (NiPc) and cobalt phthalocyanine (CoPc) are deposited by drop casting and under centrifugal force. The films are deposited on surface-type inter-digitated silver electrodes on ceramic alumina substrates. The effects of illumination on the impedance and capacitance of the NiPc CoPc composite samples are investigated. The samples deposited under centrifugal force show better conductivity than the samples deposited by drop casting technique. In terms of impedance and capacitance sensitivities the samples fabricated under centrifugal force are more sensitive than the drop casting samples. The values of impedance sensitivity (Sz) are equal to (-1.83) MWcm2/mW and (-5.365) MWcm2/mW for the samples fabricated using drop casting and under centrifugal force, respectively. Similarly, the values of capacitance sensitivity (Sc) are equal to 0.083 pFcm2/mW and 0.185 pFcm2/mW for the samples fabricated by drop casting and under centrifugal force. The films deposited using the different procedures could potentially be viable for different operational modes (i.e., conductive or capacitive) of the optical sensors. Both experimental and simulated results are discussed.
Languageen
PublisherInstitute of Physics Publishing
Subjectcapacitive mode
centrifugal deposition
impedance mode
optical sensors
TitleOptical sensors based on the NiPc-CoPc composite films deposited by drop casting and under the action of centrifugal force
TypeArticle
Issue Number6
Volume Number26
dc.accessType Abstract Only


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