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Compositional engineering of VOPcPhO-TiO2 nano-composite to reduce the absolute threshold value of humidity sensors

This 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 NP...

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Main Authors: Azmer, M.I., Aziz, F., Ahmad, Z., Raza, E., Najeeb, M.A., Fatima, N., Bawazeer, T.M., Alsoufi, M.S., Shakoor, R.A., Sulaiman, K.
Format: Article
Published: Elsevier 2017
Subjects:
Q Science (General)
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.um.edu.my/17552/
https://doi.org/10.1016/j.talanta.2017.06.016
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spelling my.um.eprints.175522017-07-21T02:30:01Z http://eprints.um.edu.my/17552/ Compositional engineering of VOPcPhO-TiO2 nano-composite to reduce the absolute threshold value of humidity sensors Azmer, M.I. Aziz, F. Ahmad, Z. Raza, E. Najeeb, M.A. Fatima, N. Bawazeer, T.M. Alsoufi, M.S. Shakoor, R.A. Sulaiman, K. Q Science (General) TA Engineering (General). Civil engineering (General) This 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. Elsevier 2017 Article PeerReviewed Azmer, M.I. and Aziz, F. and Ahmad, Z. and Raza, E. and Najeeb, M.A. and Fatima, N. and Bawazeer, T.M. and Alsoufi, M.S. and Shakoor, R.A. and Sulaiman, K. (2017) Compositional engineering of VOPcPhO-TiO2 nano-composite to reduce the absolute threshold value of humidity sensors. Talanta, 174. pp. 279-284. ISSN 0039-9140 https://doi.org/10.1016/j.talanta.2017.06.016 DOI: 10.1016/j.talanta.2017.06.016
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)
TA Engineering (General). Civil engineering (General)
spellingShingle Q Science (General)
TA Engineering (General). Civil engineering (General)
Azmer, M.I.
Aziz, F.
Ahmad, Z.
Raza, E.
Najeeb, M.A.
Fatima, N.
Bawazeer, T.M.
Alsoufi, M.S.
Shakoor, R.A.
Sulaiman, K.
Compositional engineering of VOPcPhO-TiO2 nano-composite to reduce the absolute threshold value of humidity sensors
description This 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.
format Article
author Azmer, M.I.
Aziz, F.
Ahmad, Z.
Raza, E.
Najeeb, M.A.
Fatima, N.
Bawazeer, T.M.
Alsoufi, M.S.
Shakoor, R.A.
Sulaiman, K.
author_facet Azmer, M.I.
Aziz, F.
Ahmad, Z.
Raza, E.
Najeeb, M.A.
Fatima, N.
Bawazeer, T.M.
Alsoufi, M.S.
Shakoor, R.A.
Sulaiman, K.
author_sort Azmer, M.I.
title Compositional engineering of VOPcPhO-TiO2 nano-composite to reduce the absolute threshold value of humidity sensors
title_short Compositional engineering of VOPcPhO-TiO2 nano-composite to reduce the absolute threshold value of humidity sensors
title_full Compositional engineering of VOPcPhO-TiO2 nano-composite to reduce the absolute threshold value of humidity sensors
title_fullStr Compositional engineering of VOPcPhO-TiO2 nano-composite to reduce the absolute threshold value of humidity sensors
title_full_unstemmed Compositional engineering of VOPcPhO-TiO2 nano-composite to reduce the absolute threshold value of humidity sensors
title_sort compositional engineering of vopcpho-tio2 nano-composite to reduce the absolute threshold value of humidity sensors
publisher Elsevier
publishDate 2017
url http://eprints.um.edu.my/17552/
https://doi.org/10.1016/j.talanta.2017.06.016
_version_ 1643690450545016832
score 13.211869

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