Impact of Ag on the Limit of Detection towards NH(3)-Sensing in Spray-Coated WO(3) Thin-Films

Ag-doped WO(3) (Ag–WO(3)) films were deposited on a soda-lime glass substrate via a facile spray pyrolysis technique. The surface roughness of the films varied between 0.6 nm and 4.3 nm, as verified by the Atomic Force Microscopy (AFM) studies. Ammonia (NH(3))-sensing measurements of the films were...

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Autores principales: Anusha, Ani, Aninamol, Poornesh, P., Antony, Albin, Bhaghyesh, Shchetinin, Igor V., Nagaraja, K. K., Chattopadhyay, Saikat, Vinayakumar, K. B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8915039/
https://www.ncbi.nlm.nih.gov/pubmed/35271180
http://dx.doi.org/10.3390/s22052033
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author Anusha,
Ani, Aninamol
Poornesh, P.
Antony, Albin
Bhaghyesh,
Shchetinin, Igor V.
Nagaraja, K. K.
Chattopadhyay, Saikat
Vinayakumar, K. B.
author_facet Anusha,
Ani, Aninamol
Poornesh, P.
Antony, Albin
Bhaghyesh,
Shchetinin, Igor V.
Nagaraja, K. K.
Chattopadhyay, Saikat
Vinayakumar, K. B.
author_sort Anusha,
collection PubMed
description Ag-doped WO(3) (Ag–WO(3)) films were deposited on a soda-lime glass substrate via a facile spray pyrolysis technique. The surface roughness of the films varied between 0.6 nm and 4.3 nm, as verified by the Atomic Force Microscopy (AFM) studies. Ammonia (NH(3))-sensing measurements of the films were performed for various concentrations at an optimum sensor working temperature of 200 °C. Enrichment of oxygen vacancies confirmed by X-ray Photoelectron Spectroscopy (XPS) in 1% Ag–WO(3) enhanced the sensor response from 1.06 to 3.29, approximately 3 times higher than that of undoped WO(3). Limit of detection (LOD) up to 500 ppb is achieved for 1% Ag–WO(3), substantiating the role of Ag in improving sensor performance.
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spelling pubmed-89150392022-03-12 Impact of Ag on the Limit of Detection towards NH(3)-Sensing in Spray-Coated WO(3) Thin-Films Anusha, Ani, Aninamol Poornesh, P. Antony, Albin Bhaghyesh, Shchetinin, Igor V. Nagaraja, K. K. Chattopadhyay, Saikat Vinayakumar, K. B. Sensors (Basel) Article Ag-doped WO(3) (Ag–WO(3)) films were deposited on a soda-lime glass substrate via a facile spray pyrolysis technique. The surface roughness of the films varied between 0.6 nm and 4.3 nm, as verified by the Atomic Force Microscopy (AFM) studies. Ammonia (NH(3))-sensing measurements of the films were performed for various concentrations at an optimum sensor working temperature of 200 °C. Enrichment of oxygen vacancies confirmed by X-ray Photoelectron Spectroscopy (XPS) in 1% Ag–WO(3) enhanced the sensor response from 1.06 to 3.29, approximately 3 times higher than that of undoped WO(3). Limit of detection (LOD) up to 500 ppb is achieved for 1% Ag–WO(3), substantiating the role of Ag in improving sensor performance. MDPI 2022-03-05 /pmc/articles/PMC8915039/ /pubmed/35271180 http://dx.doi.org/10.3390/s22052033 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Anusha,
Ani, Aninamol
Poornesh, P.
Antony, Albin
Bhaghyesh,
Shchetinin, Igor V.
Nagaraja, K. K.
Chattopadhyay, Saikat
Vinayakumar, K. B.
Impact of Ag on the Limit of Detection towards NH(3)-Sensing in Spray-Coated WO(3) Thin-Films
title Impact of Ag on the Limit of Detection towards NH(3)-Sensing in Spray-Coated WO(3) Thin-Films
title_full Impact of Ag on the Limit of Detection towards NH(3)-Sensing in Spray-Coated WO(3) Thin-Films
title_fullStr Impact of Ag on the Limit of Detection towards NH(3)-Sensing in Spray-Coated WO(3) Thin-Films
title_full_unstemmed Impact of Ag on the Limit of Detection towards NH(3)-Sensing in Spray-Coated WO(3) Thin-Films
title_short Impact of Ag on the Limit of Detection towards NH(3)-Sensing in Spray-Coated WO(3) Thin-Films
title_sort impact of ag on the limit of detection towards nh(3)-sensing in spray-coated wo(3) thin-films
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8915039/
https://www.ncbi.nlm.nih.gov/pubmed/35271180
http://dx.doi.org/10.3390/s22052033
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