Making Graphene Luminescent by Direct Laser Writing
Hiltunen, V.-M., Koskinen, P. J., Mentel, K. K., Manninen, J., Myllyperkiö, P., Johansson, A., & Pettersson, M. (2020). Making Graphene Luminescent by Direct Laser Writing. Journal of Physical Chemistry C, 124(15), 8371-8377. https://doi.org/10.1021/acs.jpcc.0c00194
Published inJournal of Physical Chemistry C
© 2020 American Chemical Society
Graphene is not intrinsically luminescent, due to a lack of bandgap, and methods for its creation are tricky for device fabrication. In this study, we create luminescent graphene patterns by a simple direct laser writing method. We analyze the graphene using Raman spectroscopy and find that the laser writing leads to generation of line defects after initial formation of point defects. This Raman data enables us to create a model that explains the luminescence by a formation of small domains due to confinement of graphene by line defects, which is conceptually similar to the mechanism of luminescence in graphene quantum dots.
PublisherAmerican Chemical Society
Publication in research information system
MetadataShow full item record
Related funder(s)Academy of Finland
Funding program(s)Academy Project, AoF
Additional information about fundingV.-M.H. acknowledges funding from the Finnish Cultural Foundation. P.K. and M.P. acknowledge funding from the Academy of Finland (grants 297115 and 311330).
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