Paper Title :Liquefied Petroleum Gas Sensing Performance of Electrodeposited Cuprous Oxide Thin Films at Room Temperature
Author :K N D Bandara, K M D C Jayathilaka, M S Gunewardene, D P Dissanayake, J K D S Jayanetti
Article Citation :K N D Bandara ,K M D C Jayathilaka ,M S Gunewardene ,D P Dissanayake ,J K D S Jayanetti ,
(2018 ) " Liquefied Petroleum Gas Sensing Performance of Electrodeposited Cuprous Oxide Thin Films at Room Temperature " ,
International Journal of Advances in Science, Engineering and Technology(IJASEAT) ,
pp. 7-10,
Volume-6, Issue-2
Abstract : Application of p-type cuprous oxide (Cu2O) thin films fabricated by electrochemical deposition for Liquefied
petroleum gas (LPG) sensors was investigated. The scanning electron microscopy (SEM) and X-ray diffraction (XRD)
measurements were performed to investigate the crystal structure of synthesized Cu2O films. According to the XRD patterns,
the films had a preferred (200) orientation. The effect of the electrical resistivity change of Cu2O thin film layer in the
presence of LPG is used for gas sensing and their response times, and recovery times were examined using LPG gas in dry
air 1.5% volume percentage at the room temperature. The compositional analysis investigated using energy dispersive Xray
spectrometry (EDAX). The Mott - Schottky plot was used to confirm p-type conductivity of Cu2O thin films. When
exposed to a mixture of LP gas and dry air, the resistance of these films increased and LPG gas response was recorded for
lowest LP gas concentration of 1.5 vol. % with 36 s and 40 s response and recovery times, respectively. The device retained
95 % gas sensing stability after the time period of 60 days, suggesting that the fabricated p-type Cu2O thin films are reliable
and promising for LPG sensing.
Keywords – Electro deposition, gas sensor, liquefied petroleum gas, cuprous oxide
Type : Research paper
Published : Volume-6, Issue-2
DOIONLINE NO - IJASEAT-IRAJ-DOIONLINE-11977
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Published on 2018-06-29 |
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