Making Graphene Luminescent by Direct Laser Writing
Abstract
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.
Main Authors
Format
Articles
Research article
Published
2020
Series
Subjects
Publication in research information system
Publisher
American Chemical Society
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202003302575Use this for linking
Review status
Peer reviewed
ISSN
1932-7447
DOI
https://doi.org/10.1021/acs.jpcc.0c00194
Language
English
Published in
Journal of Physical Chemistry C
Citation
- 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
License
Funder(s)
Research Council of Finland
Research Council of Finland
Funding program(s)
Academy Project, AoF
Academy Project, AoF
Akatemiahanke, SA
Akatemiahanke, SA
Additional information about funding
V.-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).
Copyright© 2020 American Chemical Society