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Combinatorial Cu-Ni Alloy Thin-Film Catalysts for Layer Number Control in Chemical Vapor-Deposited Graphene
| Content Provider | MDPI |
|---|---|
| Author | Khanna, Sumeer R. Stanford, Michael G. Vlassiouk, Ivan V. Rack, Philip D. |
| Copyright Year | 2022 |
| Description | We synthesized a combinatorial library of $Cu_{x}Ni_{1−x}$ alloy thin films via co-sputtering from Cu and Ni targets to catalyze graphene chemical vapor deposition. The alloy morphology, composition, and microstructure were characterized via scanning electron microscopy (SEM), energy dispersive x-ray spectroscopy (EDS), and X-ray diffraction (XRD), respectively. Subsequently, the $Cu_{x}Ni_{1−x}$ alloy thin films were used to grow graphene in a $CH_{4}-Ar-H_{2}$ ambient at atmospheric pressure. The underlying rationale is to adjust the $Cu_{x}Ni_{1−x}$ composition to control the graphene. Energy dispersive x-ray spectroscopy (EDS) analysis revealed that a continuous gradient of $Cu_{x}Ni_{1−x}$ (25 at. % < x < 83 at.%) was initially achieved across the 100 mm diameter substrate (~0.9%/mm composition gradient). The XRD spectra confirmed a solid solution was realized and the face-centered cubic lattice parameter varied from ~3.52 to 3.58 |
| Starting Page | 1553 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano12091553 |
| Journal | Nanomaterials |
| Issue Number | 9 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-05-04 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Coatings and Films Thin Film Combinatorial Sputtering Alloys Catalyst Graphene 2d Materials Chemical Vapor Deposition (cvd) Raman Spectroscopy |
| Content Type | Text |
| Resource Type | Article |
