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AuthorRaza, Ehsan
AuthorAsif, Muhammad
AuthorAziz, Fakhra
AuthorAzmer, Mohamad Izzat
AuthorMalika, Haseeb Ashraf
AuthorThe, Chin-Hoong
AuthorNajeeb, Mansoor Ani
AuthorZafar, Qayyum
AuthorAhmad, Zubair
AuthorWahab, Fazal
AuthorDaik, Rusli
AuthorSarih, Norazilawati Muhamad
AuthorSupangat, Azzuliani
AuthorSulaiman, Khaulah
Available date2021-04-22T13:00:31Z
Publication Date2016
Publication NameSensors and Actuators, B: Chemical
ResourceScopus
URIhttp://dx.doi.org/10.1016/j.snb.2016.05.071
URIhttp://hdl.handle.net/10576/18339
AbstractIn this work, we report on the application of a newly synthesized macroporous polythiophene derivative, benzo[b]thiophene end-capped dioctyloxy-benzene(PBObzT2), in the fabrication of a capacitive humidity sensor. The sensor has been fabricated by spin-coating polymer solution in the gap between pre-deposited aluminum electrodes to form a coplanar Al/PBObzT2/Al capacitive humidity sensor. We have also demonstrated how effectively thermal annealing has improved the physical aspects of the active layer and sensing properties of the sensor. The sensor's capacitance is measured against RH variations at different frequencies. Particularly, at an optimum annealing temperature of 75 �C, the sensor exhibits high sensitivity, fast response and low hysteresis. The hydrophobic nature of the polymer makes it highly appropriate to be used in the humidity sensors
SponsorAuthors are thankful to the Ministry of Education, Malaysia , for the financial support under High Impact Research (HIR) grant UM.S/625/3/HIR/MOE/26 with account number UM.0000080/HIR.C3, Fundamental Research Grant Scheme (FRGS) FP046-2015A and University Malaya under University Malaya Research Grant (UMRG) RP007A-13AFR and RP007A/2011A . Fakhra Aziz would like to acknowledge the support of Higher Education Commission (HEC) of Pakistan through Post Doctoral Fellowship. The authors are also grateful to the University Kebangsaan Malaysia (UKM) for providing the research funds through grant FST-06-FRGS0095-2010 . Appendix A
Languageen
PublisherElsevier B.V.
SubjectAluminum coatings
Annealing
Humidity sensors
Hysteresis
Morphology
Thiophene
Aluminum electrodes
Annealing temperatures
Benzothiophene
Capacitive humidity sensors
Different frequency
Hydrophobic nature
Polythiophene derivatives
Thermal-annealing
Capacitive sensors
TitleInfluence of thermal annealing on a capacitive humidity sensor based on newly synthesized macroporous PBObzT2
TypeArticle
Pagination146-153
Volume Number235
dc.accessType Abstract Only


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