Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 30, Pages 15336-15341Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm32050a
Keywords
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Funding
- National Synchrotron Radiation Laboratory of China [KY206014002]
- National Natural Science Foundation of China [21071137]
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The influence of defects (such as vacancy and substitution atom) on SERS of graphene has been investigated systematically. It is found that B-substituted graphene has a positive effect on SERS with an enhancement factor of 103 to 104 and a frequency shift of approximately 30 cm(-1), resulting from the electronic attraction between the positive charged substrate and the negative charged probe molecule, which forms a chemisorption interaction at the interface. The doped B atom could introduce some new excited states to the complex for charge transfer, and this is confirmed by the UV-Visible absorption spectra and charge difference densities.
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