556Room temperature carbon dioxide gas sensor based on europium oxide with a Kapton film as a flexible substrate

Mohd Chachuli, Siti Amaniah and Sanmugavelan, Kuberahventhan and Jali, Mohd Hafiz and Harun, Sulaiman Wadi and Thokchom, Siddharth (2025) 556Room temperature carbon dioxide gas sensor based on europium oxide with a Kapton film as a flexible substrate. International Journal of Nanoelectronics and Materials, 18 (4). pp. 556-562. ISSN 1985-5761

Text 0181702112025195312.pdf Download (848kB)

Abstract

The present research explores the fabrication and characterisation of thick films of europium oxide (Eu2O3), produced by the screen-printing method onto a Kapton film as a flexible substrate, for carbon dioxide (CO2) gas sensing at room temperature. Eu₂O₃ has been chosen as sensing material for CO2 gas due to the unique electrical structure, great sensitivity, and stability, and this study investigates the capability of Eu2O3 as gas sensor to interact with various CO2 concentrations at room temperature. The project aims to develop three Eu2O3 thick film sensors (Peu1, Peu2, and Peu3) using screen-printing method. Furthermore, the films gas-sensing characteristics are fully examined utilizing methods such as field emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD) and Raman spectroscopy. The result obtained from the graph of the I-V measurements of three Eu2O3 gas sensors were linear. Peu3 produced the highest response value of 1.53 at concentration of 30 sccm of CO2. Whereas Peu1 produced response value of 1.66 and 1.97 at concentration of 50 sccm and 70 sccm of CO2 gas, respectively. In general, Peu1 responded the best to different CO2 gas concentrations and had the least resistance which was 0.666 GΩ. Redox interactions between CO2 and Eu3+ ions at the Eu2O3 surface cause this drop in resistance by increasing the concentration of charge carriers and enhancing the electrical conductivity of the sensor material. These discoveries highlight the tremendous potential of Eu2O3 as a sensing material for several industrial applications, including the detection of greenhouse gases.

Item Type:	Article
Uncontrolled Keywords:	Binder, Carbon dioxide gas, Europium oxide, Kapton film, Screen-printing, Thick film gas sensor
Divisions:	Faculty Of Electrical Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	13 Apr 2026 08:07
Last Modified:	13 Apr 2026 08:07
URI:	http://eprints.utem.edu.my/id/eprint/29662
Statistic Details:	View Download Statistic

Actions (login required)

View Item