Detection of ethanol gas at room temperature by In2O3-based screen-printed films fabricated through particle-free aqueous solution combustible inks

Robbi Vivek Vardhan; Lakkimsetti Lakshmi Praveen; G Manjunath; P Nagaraju; Asiful Hossain Seikh; Ibrahim A Alnaser; Saumen Mandal

doi:10.1088/2053-1591/ad61bf

Materials Research Express (Jan 2024)

Detection of ethanol gas at room temperature by In2O3-based screen-printed films fabricated through particle-free aqueous solution combustible inks

Robbi Vivek Vardhan,
Lakkimsetti Lakshmi Praveen,
G Manjunath,
P Nagaraju,
Asiful Hossain Seikh,
Ibrahim A Alnaser,
Saumen Mandal

Affiliations

Robbi Vivek Vardhan: Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka (NITK), Surathkal, 575025, India
Lakkimsetti Lakshmi Praveen: Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka (NITK), Surathkal, 575025, India
G Manjunath: ORCiD; Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka (NITK), Surathkal, 575025, India
P Nagaraju: ORCiD; Department of Physics, Sreenidhi Institute of Science and Technology, Yamnampet (V), Ghatkesar (M), Hyderabad , Telangana, 501301, India
Asiful Hossain Seikh: ORCiD; Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research, King Saud University , Riyadh, 11421, Saudi Arabia
Ibrahim A Alnaser: Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research, King Saud University , Riyadh, 11421, Saudi Arabia
Saumen Mandal: ORCiD; Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka (NITK), Surathkal, 575025, India

DOI: https://doi.org/10.1088/2053-1591/ad61bf
Journal volume & issue: Vol. 11, no. 7
p. 076403

Abstract

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The current work investigates the room temperature ethanol gas detection capabilities of pristine, Sn-doped, Zn-doped, Sn & Zn co-doped In _2 O _3 -based screen-printed films, fabricated using particle-free aqueous solution combustible inks on glass substrates. The fabricated films were pure, polycrystalline with cubic bixbyite crystal structure, porous, and transparent (∼75 to 95%) in the visible range. Relatively high surface roughness was detected in pristine film than in doped films. Ethanol gas was detected by all the films at room temperature. Among all, the pristine film showed a relatively greater gas response at all concentrations of ethanol gas ranging from 25 ppm to 100 ppm. This superior gas response was attributed to comparatively greater oxygen vacancy concentration (O _V /O _L ), relative area fraction of surface adsorbed oxygen (% of O _A ), and high surface roughness with porosity. The maximum ethanol gas response attained was ∼17 at 100 ppm concentration by the pristine film, which also demonstrated high selectivity to ethanol gas.

Published in Materials Research Express

ISSN: 2053-1591 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials; Technology: Chemical technology
Website: https://iopscience.iop.org/journal/2053-1591

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