Effect of polythiophene thickness on hybrid sensor sensitivity

In recent years, hybrid structures have attracted wide consideration because they generate new very interesting properties. In this study, a hybrid gas sensor was developed using a simple fabrication process from the combination of porous silicon (PSi) and polythiophene (PTh). The study of the effec...

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Autores principales:	Belhousse Samia, Tıghılt Fatma-Zohra, Bennıa Sarah, Adjtoutah Sarah, Sam Sabrina, Lasmı Kahina, Hamdanı Khaled
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	sensors electropolymerization polythiophene Technology T Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/02d12b518a82453593bfff73acd82fff
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id	oai:doaj.org-article:02d12b518a82453593bfff73acd82fff
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spelling	oai:doaj.org-article:02d12b518a82453593bfff73acd82fff2021-12-05T14:11:03ZEffect of polythiophene thickness on hybrid sensor sensitivity1605-812710.1515/rams-2021-0074https://doaj.org/article/02d12b518a82453593bfff73acd82fff2021-11-01T00:00:00Zhttps://doi.org/10.1515/rams-2021-0074https://doaj.org/toc/1605-8127In recent years, hybrid structures have attracted wide consideration because they generate new very interesting properties. In this study, a hybrid gas sensor was developed using a simple fabrication process from the combination of porous silicon (PSi) and polythiophene (PTh). The study of the effect of electropolymerization rate and film thickness of PTh on the sensitivity and the stability of sensor was realized at room temperature. PSi was formed by electrochemical anodization, and it is an interesting material for sensing applications due to its high surface area. However, to avoid its degradation and to preserve its properties over the time, PSi surface was functionalized electrochemically with PTh subsequently to thermal oxidation. PTh as a conductive polymer is known for its high sensitivity and stability to environmental change. Several thicknesses of PTh have been electropolymerized onto the oxidized PSi surface to determine the best conditions for developing a sensitive and stable sensor. PTh thickness was controlled by the number of applied voltammogram cyclic. The characterizations of the different elaborated surfaces were carried out by Fourier transform infrared spectroscopy, scanning electron microscopy, cyclic voltammetry, contact angle, and secondary ion mass spectrometry. Finally, we studied the sensitivity, the response time, and the stability of PSi/PTh structures with different PTh thicknesses in the presence of CO2 gas and under cigarette smoke, by performing electrical characterizations, at room temperature.Belhousse SamiaTıghılt Fatma-ZohraBennıa SarahAdjtoutah SarahSam SabrinaLasmı KahinaHamdanı KhaledDe GruyterarticlesensorselectropolymerizationpolythiopheneTechnologyTChemical technologyTP1-1185ENReviews on Advanced Materials Science, Vol 60, Iss 1, Pp 839-845 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sensors electropolymerization polythiophene Technology T Chemical technology TP1-1185
spellingShingle	sensors electropolymerization polythiophene Technology T Chemical technology TP1-1185 Belhousse Samia Tıghılt Fatma-Zohra Bennıa Sarah Adjtoutah Sarah Sam Sabrina Lasmı Kahina Hamdanı Khaled Effect of polythiophene thickness on hybrid sensor sensitivity
description	In recent years, hybrid structures have attracted wide consideration because they generate new very interesting properties. In this study, a hybrid gas sensor was developed using a simple fabrication process from the combination of porous silicon (PSi) and polythiophene (PTh). The study of the effect of electropolymerization rate and film thickness of PTh on the sensitivity and the stability of sensor was realized at room temperature. PSi was formed by electrochemical anodization, and it is an interesting material for sensing applications due to its high surface area. However, to avoid its degradation and to preserve its properties over the time, PSi surface was functionalized electrochemically with PTh subsequently to thermal oxidation. PTh as a conductive polymer is known for its high sensitivity and stability to environmental change. Several thicknesses of PTh have been electropolymerized onto the oxidized PSi surface to determine the best conditions for developing a sensitive and stable sensor. PTh thickness was controlled by the number of applied voltammogram cyclic. The characterizations of the different elaborated surfaces were carried out by Fourier transform infrared spectroscopy, scanning electron microscopy, cyclic voltammetry, contact angle, and secondary ion mass spectrometry. Finally, we studied the sensitivity, the response time, and the stability of PSi/PTh structures with different PTh thicknesses in the presence of CO2 gas and under cigarette smoke, by performing electrical characterizations, at room temperature.
format	article
author	Belhousse Samia Tıghılt Fatma-Zohra Bennıa Sarah Adjtoutah Sarah Sam Sabrina Lasmı Kahina Hamdanı Khaled
author_facet	Belhousse Samia Tıghılt Fatma-Zohra Bennıa Sarah Adjtoutah Sarah Sam Sabrina Lasmı Kahina Hamdanı Khaled
author_sort	Belhousse Samia
title	Effect of polythiophene thickness on hybrid sensor sensitivity
title_short	Effect of polythiophene thickness on hybrid sensor sensitivity
title_full	Effect of polythiophene thickness on hybrid sensor sensitivity
title_fullStr	Effect of polythiophene thickness on hybrid sensor sensitivity
title_full_unstemmed	Effect of polythiophene thickness on hybrid sensor sensitivity
title_sort	effect of polythiophene thickness on hybrid sensor sensitivity
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/02d12b518a82453593bfff73acd82fff
work_keys_str_mv	AT belhoussesamia effectofpolythiophenethicknessonhybridsensorsensitivity AT tıghıltfatmazohra effectofpolythiophenethicknessonhybridsensorsensitivity AT bennıasarah effectofpolythiophenethicknessonhybridsensorsensitivity AT adjtoutahsarah effectofpolythiophenethicknessonhybridsensorsensitivity AT samsabrina effectofpolythiophenethicknessonhybridsensorsensitivity AT lasmıkahina effectofpolythiophenethicknessonhybridsensorsensitivity AT hamdanıkhaled effectofpolythiophenethicknessonhybridsensorsensitivity
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Effect of polythiophene thickness on hybrid sensor sensitivity

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