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RESEARCH PRODUCT
Making Graphene Luminescent by Direct Laser Writing
Vesa-matti HiltunenPekka KoskinenKamila K. MentelJyrki ManninenAndreas JohanssonMika PetterssonPasi Myllyperkiösubject
Materials scienceFabricationBand gapspektroskopia02 engineering and technology010402 general chemistry01 natural scienceslaw.inventionlawPhysical and Theoretical ChemistryRaman-spektroskopiaGraphenebusiness.industryluminesenssi021001 nanoscience & nanotechnologyLaserlasertekniikka0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsGeneral EnergyRaman spectroscopyOptoelectronics0210 nano-technologyLuminescencebusinessdescription
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. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-03-25 | The Journal of Physical Chemistry C |