Surface engineering of electrodeposited cuprous oxide (Cu2O) thin films: Effect on hydrophobicity and LP gas sensing

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dc.contributor.author Bandara, K.N.D.
dc.contributor.author Jayathilaka, K.M.D.C.
dc.contributor.author Dissanayake, D.P.
dc.contributor.author Jayanetti, J. K. D. S.
dc.date.accessioned 2021-11-10T03:54:16Z
dc.date.available 2021-11-10T03:54:16Z
dc.date.issued 2021
dc.identifier.citation Bandara, K.N.D., Jayathilaka, K.M.D.C., Dissanayake, D.P., & Jayanetti, J.K.D.S. (2021) Surface engineering of electrodeposited cuprous oxide (Cu2O) thin films: Effect on hydrophobicity and LP gas sensing, Applied Surface Science, 561, https://doi.org/10.1016/j.apsusc.2021.150020 en_US
dc.identifier.uri 10.1016/j.apsusc.2021.150020
dc.identifier.uri http://archive.cmb.ac.lk:8080/xmlui/handle/70130/6275
dc.description.abstract P-type cuprous oxide thin films electrodeposited on a titanium substrate in a lactate bath was investigated for liquid petroleum gas (LPG) sensing. Contact angle measurements using water droplets revealed that the surfaces of the films become progressively hydrophobic with increasing deposition bath pH. The films deposited at pH = 10 were sensitive for LPG even at room temperature (30 ◦C). X-ray diffraction (XRD) and scanning electron microscopy (SEM) were performed to investigate the crystalline structure and the surface morphology of Cu2O films. According to the XRD patterns, the films had a preferred orientation along the (200) and (111) planes. The normalized intensity of (200) XRD peak increased with the deposition bath pH and reached its maximum value around pH = 11. It was also observed that the LPG sensitivity of the Cu2O films closely followed the normalized intensity of (200) peak. SEM images of Cu2O films showed the presence of well-defined crystallites with sharp edges. Atomic force microscopy (AFM) analysis showed that the surface roughness increased with deposition bath pH. Energy Dispersive X-ray analysis (EDAX) was used for compositional analysis of films and Mott - Schottky plots and spectral response measurements were carried out to confirm the p-type conductivity. en_US
dc.language.iso en en_US
dc.subject Electrodeposition en_US
dc.subject Cuprous oxide en_US
dc.subject Liquefied petroleum gas en_US
dc.subject Recovery time en_US
dc.subject Response time en_US
dc.subject Room temperature en_US
dc.subject Wettability en_US
dc.title Surface engineering of electrodeposited cuprous oxide (Cu2O) thin films: Effect on hydrophobicity and LP gas sensing en_US
dc.type Article en_US


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