Highly Oriented Monolayer Graphene Grown on a Cu/Ni(111) Alloy Foil
| Autor: | Won Jong Yoo, Rodney S. Ruoff, Xiaochi Liu, Zhi-Li Zhu, Zhong-Liu Liu, Lu Qiu, Seokmo Hong, Da Luo, Feng Ding, Yeliang Wang, Yuan Huang, Zonghoon Lee, Zheng Yang, Hyunseob Lim, Ming Huang, Deshun Qu, Mandakini Biswal, Hyo Ju Park, Sunghwan Jin |
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| Rok vydání: | 2018 |
| Předmět: |
Superstructure
Materials science Hydrogen Low-energy electron diffraction Alloy General Engineering Analytical chemistry General Physics and Astronomy chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Methane 0104 chemical sciences chemistry.chemical_compound chemistry engineering General Materials Science 0210 nano-technology Single crystal Stoichiometry FOIL method |
| Zdroj: | ACS Nano. 12:6117-6127 |
| ISSN: | 1936-086X 1936-0851 |
| Popis: | Fast-growth of single crystal monolayer graphene by CVD using methane and hydrogen has been achieved on “homemade” single crystal Cu/Ni(111) alloy foils over large area. Full coverage was achieved in 5 min or less for a particular range of composition (1.3 at.% to 8.6 at.% Ni), as compared to 60 min for a pure Cu(111) foil under identical growth conditions. These are the bulk atomic percentages of Ni, as a superstructure at the surface of these foils with stoichiometry Cu6Ni1 (for 1.3 to 7.8 bulk at.% Ni in the Cu/Ni(111) foil) was discovered by low energy electron diffraction (LEED). Complete large area monolayer graphene films are either single crystal or close to single crystal, and include folded regions that are essentially parallel and that were likely wrinkles that “fell over” to bind to the surface; these folds are separated by large, wrinkle-free regions. The folds occur due to the buildup of interfacial compressive stress (and its release) during cooling of the foils from 1075 °C to room tempera... |
| Databáze: | OpenAIRE |
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