Structural, Mechanical and Electrical Characteristics of Copper Coatings Obtained by Various Electrodeposition Processes
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2022
Authors
Mladenovic, Ivana O.Boskovic, Marko V.
Vuksanović, Marija M.
Nikolić, Nebojša D.
Lamovec, Jelena S.
Vasiljevic-Radovic, Dana G.
Radojević, Vesna
Article (Published version)
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Mechanical (hardness and adhesion) and electrical (sheet resistance) characteristics of electrolytically produced copper coatings have been investigated. Morphologies of Cu coatings produced galvanostatically at two current densities from the basic sulfate electrolyte and from an electrolyte containing levelling/brightening additives without and with application of ultrasound for the electrolyte stirring were characterized by SEM and AFM techniques. Mechanical characteristics were examined by Vickers microindentation using the Chen-Gao (C-G) composite hardness model, while electrical characteristics were examined by the four-point probe method. Application of ultrasound achieved benefits on both hardness and adhesion of the Cu coatings, thereby the use of both the larger current density and additive-free electrolyte improved these mechanical characteristics. The hardness of Cu coatings calculated according to the C-G model was in the 1.1844-1.2303 GPa range for fine-grained Cu coatings... obtained from the sulfate electrolyte and in the 0.8572-1.1507 GPa range for smooth Cu coatings obtained from the electrolyte with additives. Analysis of the electrical characteristics of Cu coatings after an aging period of 4 years showed differences in the sheet resistance between the top and the bottom sides of the coating, which is attributed to the formation of a thin oxide layer on the coating surface area.
Keywords:
copper / electrodeposition / morphology / microstructure / composite hardness / adhesion / critical reduced depth / sheet resistanceSource:
Electronics, 2022, 11, 3Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200017 (University of Belgrade, Institute of Nuclear Sciences 'Vinča', Belgrade-Vinča) (RS-MESTD-inst-2020-200017)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-MESTD-inst-2020-200026)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-MESTD-inst-2020-200135)
DOI: 10.3390/electronics11030443
ISSN: 2079-9292
WoS: 000754769000001
Scopus: 2-s2.0-85123741962
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Mladenovic, Ivana O. AU - Boskovic, Marko V. AU - Vuksanović, Marija M. AU - Nikolić, Nebojša D. AU - Lamovec, Jelena S. AU - Vasiljevic-Radovic, Dana G. AU - Radojević, Vesna PY - 2022 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5026 AB - Mechanical (hardness and adhesion) and electrical (sheet resistance) characteristics of electrolytically produced copper coatings have been investigated. Morphologies of Cu coatings produced galvanostatically at two current densities from the basic sulfate electrolyte and from an electrolyte containing levelling/brightening additives without and with application of ultrasound for the electrolyte stirring were characterized by SEM and AFM techniques. Mechanical characteristics were examined by Vickers microindentation using the Chen-Gao (C-G) composite hardness model, while electrical characteristics were examined by the four-point probe method. Application of ultrasound achieved benefits on both hardness and adhesion of the Cu coatings, thereby the use of both the larger current density and additive-free electrolyte improved these mechanical characteristics. The hardness of Cu coatings calculated according to the C-G model was in the 1.1844-1.2303 GPa range for fine-grained Cu coatings obtained from the sulfate electrolyte and in the 0.8572-1.1507 GPa range for smooth Cu coatings obtained from the electrolyte with additives. Analysis of the electrical characteristics of Cu coatings after an aging period of 4 years showed differences in the sheet resistance between the top and the bottom sides of the coating, which is attributed to the formation of a thin oxide layer on the coating surface area. T2 - Electronics T1 - Structural, Mechanical and Electrical Characteristics of Copper Coatings Obtained by Various Electrodeposition Processes IS - 3 VL - 11 DO - 10.3390/electronics11030443 ER -
@article{ author = "Mladenovic, Ivana O. and Boskovic, Marko V. and Vuksanović, Marija M. and Nikolić, Nebojša D. and Lamovec, Jelena S. and Vasiljevic-Radovic, Dana G. and Radojević, Vesna", year = "2022", abstract = "Mechanical (hardness and adhesion) and electrical (sheet resistance) characteristics of electrolytically produced copper coatings have been investigated. Morphologies of Cu coatings produced galvanostatically at two current densities from the basic sulfate electrolyte and from an electrolyte containing levelling/brightening additives without and with application of ultrasound for the electrolyte stirring were characterized by SEM and AFM techniques. Mechanical characteristics were examined by Vickers microindentation using the Chen-Gao (C-G) composite hardness model, while electrical characteristics were examined by the four-point probe method. Application of ultrasound achieved benefits on both hardness and adhesion of the Cu coatings, thereby the use of both the larger current density and additive-free electrolyte improved these mechanical characteristics. The hardness of Cu coatings calculated according to the C-G model was in the 1.1844-1.2303 GPa range for fine-grained Cu coatings obtained from the sulfate electrolyte and in the 0.8572-1.1507 GPa range for smooth Cu coatings obtained from the electrolyte with additives. Analysis of the electrical characteristics of Cu coatings after an aging period of 4 years showed differences in the sheet resistance between the top and the bottom sides of the coating, which is attributed to the formation of a thin oxide layer on the coating surface area.", journal = "Electronics", title = "Structural, Mechanical and Electrical Characteristics of Copper Coatings Obtained by Various Electrodeposition Processes", number = "3", volume = "11", doi = "10.3390/electronics11030443" }
Mladenovic, I. O., Boskovic, M. V., Vuksanović, M. M., Nikolić, N. D., Lamovec, J. S., Vasiljevic-Radovic, D. G.,& Radojević, V.. (2022). Structural, Mechanical and Electrical Characteristics of Copper Coatings Obtained by Various Electrodeposition Processes. in Electronics, 11(3). https://doi.org/10.3390/electronics11030443
Mladenovic IO, Boskovic MV, Vuksanović MM, Nikolić ND, Lamovec JS, Vasiljevic-Radovic DG, Radojević V. Structural, Mechanical and Electrical Characteristics of Copper Coatings Obtained by Various Electrodeposition Processes. in Electronics. 2022;11(3). doi:10.3390/electronics11030443 .
Mladenovic, Ivana O., Boskovic, Marko V., Vuksanović, Marija M., Nikolić, Nebojša D., Lamovec, Jelena S., Vasiljevic-Radovic, Dana G., Radojević, Vesna, "Structural, Mechanical and Electrical Characteristics of Copper Coatings Obtained by Various Electrodeposition Processes" in Electronics, 11, no. 3 (2022), https://doi.org/10.3390/electronics11030443 . .