Raman Spectral Indicators of Catalyst Decoupling for Transfer of CVD Grown 2D Materials
| Autor: | Bjarke Sørensen Jessen, Philipp Braeuninger-Weimer, Lutz Prager, Timothy J. Booth, Stephan Hofmann, Adam Carsten Stoot, Alex Jouvray, Luca Camilli, David M. A. Mackenzie, Birong Luo, Patrick Rebsdorf Whelan, Peter Bøggild, Ruizhi Wang |
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| Přispěvatelé: | Wang, Ruizhi [0000-0002-3914-8649], Braeuninger-Weimer, Philipp [0000-0001-8677-1647], Hofmann, Stephan [0000-0001-6375-1459], Apollo - University of Cambridge Repository |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Analytical chemistry chemistry.chemical_element FOS: Physical sciences 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention Catalysis symbols.namesake law Monolayer Wavenumber General Materials Science Wafer Condensed Matter - Materials Science Settore FIS/03 Graphene Materials Science (cond-mat.mtrl-sci) General Chemistry 021001 nanoscience & nanotechnology 5104 Condensed Matter Physics Copper 0104 chemical sciences 3. Good health chemistry symbols 0210 nano-technology Raman spectroscopy 51 Physical Sciences Decoupling (electronics) |
| Zdroj: | Carbon Whelan, P R, Jessen, B S, Wang, R, Luo, B, Stoot, A C, Mackenzie, D, Braeuninger-Weimer, P, Jouvray, A, Prager, L, Camilli, L, Hofmann, S, Bøggild, P & Booth, T 2017, ' Raman spectral indicators of catalyst decoupling for transfer of CVD grown 2D materials ', Carbon, vol. 117, pp. 75-81 . https://doi.org/10.1016/j.carbon.2017.02.028 |
| DOI: | 10.48550/arxiv.1805.05083 |
| Popis: | Through a combination of monitoring the Raman spectral characteristics of 2D materials grown on copper catalyst layers, and wafer scale automated detection of the fraction of transferred material, we reproducibly achieve transfers with over 97.5% monolayer hexagonal boron nitride and 99.7% monolayer graphene coverage, for up to 300 mm diameter wafers. We find a strong correlation between the transfer coverage obtained for graphene and the emergence of a lower wavenumber 2D- peak component, with the concurrent disappearance of the higher wavenumber 2D+ peak component during oxidation of the catalyst surface. The 2D peak characteristics can therefore act as an unambiguous predictor of the success of the transfer. The combined monitoring and transfer process presented here is highly scalable and amenable for roll-to-roll processing. Comment: 18 pages, 6 figures |
| Databáze: | OpenAIRE |
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