Simultaneously enhanced electrical conductivity and strength in Cu/graphene/Cu sandwiched nanofilm. (October 2020)

• Record Type: Journal Article
• Authors: Dong, Zhilei; Peng, Yifei; Tan, Zhanqiu; Fan, Genlian; Guo, Qiang; Li, Zhiqiang; Xiong, Ding-Bang
• Is Part Of: Scripta materialia. Number 187(2020)
• Page Start: 296
• Page End: 300
• Publication Date: 2020-10
• Subjects: Cu/graphene/Cu -- Sandwiched nanofilm -- Electrical conductivity -- Doping; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.06.051
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Cu/graphene/Cu sandwiched nanofilms with a thickness of ~100 nm were prepared on SiO2 /Si substrates by a combined process of magnetron sputtering and graphene transfer. Except for an enhancement of 14.9% on hardness as compared to Cu/Cu nanofilms, the as-sputtered and annealed sandwiched nanofilms show improvements on electrical conductivity by 18.0% and 17.2%, respectively. By using Raman spectroscopy, the enhancement mechanism on electrical conductivity was investigated with respect to electron doping, and strain effect on the band gap of graphene and thus the doping concentration was also discussed. Graphical abstract: Image, graphical abstract