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Enhanced sensitivity of zinc phthalocyanine-based microporous humidity sensors by varying size of electrode gaps

The use of organic materials has become an increasingly important issue in sensing devices in recent times. Phthalocyanine is among the most promising materials in this undertaking. Zinc phthalocyanine (ZnPc) based microporous device was fabricated and its capacitance was utilized as the sensing mec...

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Main Authors: Safian, Nur Azmina Mohamed, Anuar, Afiq, Omar, Al-Zuhairi, Bawazeer, Tahani M., Alsenany, Nourah, Alsoufi, Mohammad S., Supangat, Azzuliani, Roslan, Nur Adilah
Format: Article
Published: Elsevier Science SA 2021
Subjects:
Q Science (General)
QC Physics
QD Chemistry
Online Access:http://eprints.um.edu.my/33890/
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spelling my.um.eprints.338902022-07-22T05:08:57Z http://eprints.um.edu.my/33890/ Enhanced sensitivity of zinc phthalocyanine-based microporous humidity sensors by varying size of electrode gaps Safian, Nur Azmina Mohamed Anuar, Afiq Omar, Al-Zuhairi Bawazeer, Tahani M. Alsenany, Nourah Alsoufi, Mohammad S. Supangat, Azzuliani Roslan, Nur Adilah Q Science (General) QC Physics QD Chemistry The use of organic materials has become an increasingly important issue in sensing devices in recent times. Phthalocyanine is among the most promising materials in this undertaking. Zinc phthalocyanine (ZnPc) based microporous device was fabricated and its capacitance was utilized as the sensing mechanism for a humidity sensor. The effect of the electrode gap of the device on the electrical properties was investigated along with the correlation between the device's performances and the morphology of the sensing film. Using the solutionprocessed spin coating method, the capacitive type humidity sensor devices have been fabricated in a planar geometry of Al/ZnPc/Al with the presence of a microporous template. The size of electrode gaps measured with a surface profiler was 53.00 +/- 0.06 mu m, 119.00 +/- 0.03 mu m and 286.00 +/- 0.01 mu m. The surface morphology was characterized by using transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM) and X-ray photoelectron spectroscopy (XPS). Analysis of the experimental results showed that the device with the shortest electrode gap (53.00 mu m) produced the best sensitivity of 1.03 +/- 0.04 pF/%RH than that of the longer gaps. Additionally, hysteresis as well as response and recovery performances have also been investigated. Elsevier Science SA 2021-09-15 Article PeerReviewed Safian, Nur Azmina Mohamed and Anuar, Afiq and Omar, Al-Zuhairi and Bawazeer, Tahani M. and Alsenany, Nourah and Alsoufi, Mohammad S. and Supangat, Azzuliani and Roslan, Nur Adilah (2021) Enhanced sensitivity of zinc phthalocyanine-based microporous humidity sensors by varying size of electrode gaps. Sensors and Actuators B-Chemical, 343. ISSN 0925-4005, DOI https://doi.org/10.1016/j.snb.2021.130158 <https://doi.org/10.1016/j.snb.2021.130158>. 10.1016/j.snb.2021.130158
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QC Physics
QD Chemistry
spellingShingle Q Science (General)
QC Physics
QD Chemistry
Safian, Nur Azmina Mohamed
Anuar, Afiq
Omar, Al-Zuhairi
Bawazeer, Tahani M.
Alsenany, Nourah
Alsoufi, Mohammad S.
Supangat, Azzuliani
Roslan, Nur Adilah
Enhanced sensitivity of zinc phthalocyanine-based microporous humidity sensors by varying size of electrode gaps
description The use of organic materials has become an increasingly important issue in sensing devices in recent times. Phthalocyanine is among the most promising materials in this undertaking. Zinc phthalocyanine (ZnPc) based microporous device was fabricated and its capacitance was utilized as the sensing mechanism for a humidity sensor. The effect of the electrode gap of the device on the electrical properties was investigated along with the correlation between the device's performances and the morphology of the sensing film. Using the solutionprocessed spin coating method, the capacitive type humidity sensor devices have been fabricated in a planar geometry of Al/ZnPc/Al with the presence of a microporous template. The size of electrode gaps measured with a surface profiler was 53.00 +/- 0.06 mu m, 119.00 +/- 0.03 mu m and 286.00 +/- 0.01 mu m. The surface morphology was characterized by using transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM) and X-ray photoelectron spectroscopy (XPS). Analysis of the experimental results showed that the device with the shortest electrode gap (53.00 mu m) produced the best sensitivity of 1.03 +/- 0.04 pF/%RH than that of the longer gaps. Additionally, hysteresis as well as response and recovery performances have also been investigated.
format Article
author Safian, Nur Azmina Mohamed
Anuar, Afiq
Omar, Al-Zuhairi
Bawazeer, Tahani M.
Alsenany, Nourah
Alsoufi, Mohammad S.
Supangat, Azzuliani
Roslan, Nur Adilah
author_facet Safian, Nur Azmina Mohamed
Anuar, Afiq
Omar, Al-Zuhairi
Bawazeer, Tahani M.
Alsenany, Nourah
Alsoufi, Mohammad S.
Supangat, Azzuliani
Roslan, Nur Adilah
author_sort Safian, Nur Azmina Mohamed
title Enhanced sensitivity of zinc phthalocyanine-based microporous humidity sensors by varying size of electrode gaps
title_short Enhanced sensitivity of zinc phthalocyanine-based microporous humidity sensors by varying size of electrode gaps
title_full Enhanced sensitivity of zinc phthalocyanine-based microporous humidity sensors by varying size of electrode gaps
title_fullStr Enhanced sensitivity of zinc phthalocyanine-based microporous humidity sensors by varying size of electrode gaps
title_full_unstemmed Enhanced sensitivity of zinc phthalocyanine-based microporous humidity sensors by varying size of electrode gaps
title_sort enhanced sensitivity of zinc phthalocyanine-based microporous humidity sensors by varying size of electrode gaps
publisher Elsevier Science SA
publishDate 2021
url http://eprints.um.edu.my/33890/
_version_ 1739828479562612736
score 13.211869

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