Quaternary Holey Carbon Nanohorns/SnO<sub>2</sub>/ZnO/PVP Nano-Hybrid as Sensing Element for Resistive-Type Humidity Sensor

In this study, a resistive humidity sensor for moisture detection at room temperature is presented. The thin film proposed as a critical sensing element is based on a quaternary hybrid nanocomposite CNHox//SnO<sub>2</sub>/ZnO/PVP (oxidated carbon nanohorns–tin oxide–zinc oxide–polyvinylp...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Bogdan-Catalin Serban, Cornel Cobianu, Octavian Buiu, Marius Bumbac, Niculae Dumbravescu, Viorel Avramescu, Cristina Mihaela Nicolescu, Mihai Brezeanu, Cristiana Radulescu, Gabriel Craciun, Cosmin Romanitan, Florin Constantin Comanescu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	holey carbon nanohorns (CNHox) tin oxide zinc oxide polyvinylpyrrolidone (PVP) resistive humidity sensor p-type semiconductor Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/acd9a48d4caf467fb1d76561008f44da
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:acd9a48d4caf467fb1d76561008f44da
record_format	dspace
spelling	oai:doaj.org-article:acd9a48d4caf467fb1d76561008f44da2021-11-25T17:15:49ZQuaternary Holey Carbon Nanohorns/SnO<sub>2</sub>/ZnO/PVP Nano-Hybrid as Sensing Element for Resistive-Type Humidity Sensor10.3390/coatings111113072079-6412https://doaj.org/article/acd9a48d4caf467fb1d76561008f44da2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-6412/11/11/1307https://doaj.org/toc/2079-6412In this study, a resistive humidity sensor for moisture detection at room temperature is presented. The thin film proposed as a critical sensing element is based on a quaternary hybrid nanocomposite CNHox//SnO<sub>2</sub>/ZnO/PVP (oxidated carbon nanohorns–tin oxide–zinc oxide–polyvinylpyrrolidone) at the <i>w</i>/<i>w</i>/<i>w</i>/<i>w</i> ratios of 1.5/1/1/1 and 3/1/1/1. The sensing structure consists of a Si/SiO<sub>2</sub> dielectric substrate and interdigitated transducers (IDT) electrodes, while the sensing film layer is deposited through the drop-casting method. Morphology and composition of the sensing layers were investigated through scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), X-ray diffraction, and Raman spectroscopy. Each quaternary hybrid nanocomposite-based thin film’s relative humidity (RH) sensing capability was analyzed by applying a direct current with known intensity between two electrodes and measuring the voltage difference when varying the RH from 0% to 100% in a humid nitrogen atmosphere. While the sensor with CNHox/SnO<sub>2</sub>/ZnO/PVP at 1.5/1/1/1 as the sensing layer has the better performance in terms of sensitivity, the structure employing CNHox//SnO<sub>2</sub>/ ZnO/PVP at 3/1/1/1 (mass ratio) as the sensing layer has a better performance in terms of linearity. The contribution of each component of the quaternary hybrid nanocomposites to the sensing performance is discussed in relation to their physical and chemical properties. Several alternative sensing mechanisms were taken into consideration and discussed. Based on the measured sensing results, we presume that the impact of the p-type semiconductor behavior of CNHox, in conjunction with the swelling of the hydrophilic polymer, is dominant and leads to the overall increasing resistance of the sensing film.Bogdan-Catalin SerbanCornel CobianuOctavian BuiuMarius BumbacNiculae DumbravescuViorel AvramescuCristina Mihaela NicolescuMihai BrezeanuCristiana RadulescuGabriel CraciunCosmin RomanitanFlorin Constantin ComanescuMDPI AGarticleholey carbon nanohorns (CNHox)tin oxidezinc oxidepolyvinylpyrrolidone (PVP)resistive humidity sensorp-type semiconductorEngineering (General). Civil engineering (General)TA1-2040ENCoatings, Vol 11, Iss 1307, p 1307 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	holey carbon nanohorns (CNHox) tin oxide zinc oxide polyvinylpyrrolidone (PVP) resistive humidity sensor p-type semiconductor Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	holey carbon nanohorns (CNHox) tin oxide zinc oxide polyvinylpyrrolidone (PVP) resistive humidity sensor p-type semiconductor Engineering (General). Civil engineering (General) TA1-2040 Bogdan-Catalin Serban Cornel Cobianu Octavian Buiu Marius Bumbac Niculae Dumbravescu Viorel Avramescu Cristina Mihaela Nicolescu Mihai Brezeanu Cristiana Radulescu Gabriel Craciun Cosmin Romanitan Florin Constantin Comanescu Quaternary Holey Carbon Nanohorns/SnO<sub>2</sub>/ZnO/PVP Nano-Hybrid as Sensing Element for Resistive-Type Humidity Sensor
description	In this study, a resistive humidity sensor for moisture detection at room temperature is presented. The thin film proposed as a critical sensing element is based on a quaternary hybrid nanocomposite CNHox//SnO<sub>2</sub>/ZnO/PVP (oxidated carbon nanohorns–tin oxide–zinc oxide–polyvinylpyrrolidone) at the <i>w</i>/<i>w</i>/<i>w</i>/<i>w</i> ratios of 1.5/1/1/1 and 3/1/1/1. The sensing structure consists of a Si/SiO<sub>2</sub> dielectric substrate and interdigitated transducers (IDT) electrodes, while the sensing film layer is deposited through the drop-casting method. Morphology and composition of the sensing layers were investigated through scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), X-ray diffraction, and Raman spectroscopy. Each quaternary hybrid nanocomposite-based thin film’s relative humidity (RH) sensing capability was analyzed by applying a direct current with known intensity between two electrodes and measuring the voltage difference when varying the RH from 0% to 100% in a humid nitrogen atmosphere. While the sensor with CNHox/SnO<sub>2</sub>/ZnO/PVP at 1.5/1/1/1 as the sensing layer has the better performance in terms of sensitivity, the structure employing CNHox//SnO<sub>2</sub>/ ZnO/PVP at 3/1/1/1 (mass ratio) as the sensing layer has a better performance in terms of linearity. The contribution of each component of the quaternary hybrid nanocomposites to the sensing performance is discussed in relation to their physical and chemical properties. Several alternative sensing mechanisms were taken into consideration and discussed. Based on the measured sensing results, we presume that the impact of the p-type semiconductor behavior of CNHox, in conjunction with the swelling of the hydrophilic polymer, is dominant and leads to the overall increasing resistance of the sensing film.
format	article
author	Bogdan-Catalin Serban Cornel Cobianu Octavian Buiu Marius Bumbac Niculae Dumbravescu Viorel Avramescu Cristina Mihaela Nicolescu Mihai Brezeanu Cristiana Radulescu Gabriel Craciun Cosmin Romanitan Florin Constantin Comanescu
author_facet	Bogdan-Catalin Serban Cornel Cobianu Octavian Buiu Marius Bumbac Niculae Dumbravescu Viorel Avramescu Cristina Mihaela Nicolescu Mihai Brezeanu Cristiana Radulescu Gabriel Craciun Cosmin Romanitan Florin Constantin Comanescu
author_sort	Bogdan-Catalin Serban
title	Quaternary Holey Carbon Nanohorns/SnO<sub>2</sub>/ZnO/PVP Nano-Hybrid as Sensing Element for Resistive-Type Humidity Sensor
title_short	Quaternary Holey Carbon Nanohorns/SnO<sub>2</sub>/ZnO/PVP Nano-Hybrid as Sensing Element for Resistive-Type Humidity Sensor
title_full	Quaternary Holey Carbon Nanohorns/SnO<sub>2</sub>/ZnO/PVP Nano-Hybrid as Sensing Element for Resistive-Type Humidity Sensor
title_fullStr	Quaternary Holey Carbon Nanohorns/SnO<sub>2</sub>/ZnO/PVP Nano-Hybrid as Sensing Element for Resistive-Type Humidity Sensor
title_full_unstemmed	Quaternary Holey Carbon Nanohorns/SnO<sub>2</sub>/ZnO/PVP Nano-Hybrid as Sensing Element for Resistive-Type Humidity Sensor
title_sort	quaternary holey carbon nanohorns/sno<sub>2</sub>/zno/pvp nano-hybrid as sensing element for resistive-type humidity sensor
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/acd9a48d4caf467fb1d76561008f44da
work_keys_str_mv	AT bogdancatalinserban quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor AT cornelcobianu quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor AT octavianbuiu quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor AT mariusbumbac quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor AT niculaedumbravescu quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor AT viorelavramescu quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor AT cristinamihaelanicolescu quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor AT mihaibrezeanu quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor AT cristianaradulescu quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor AT gabrielcraciun quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor AT cosminromanitan quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor AT florinconstantincomanescu quaternaryholeycarbonnanohornssnosub2subznopvpnanohybridassensingelementforresistivetypehumiditysensor
_version_	1718412551988969472

Quaternary Holey Carbon Nanohorns/SnO<sub>2</sub>/ZnO/PVP Nano-Hybrid as Sensing Element for Resistive-Type Humidity Sensor

Ejemplares similares