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par Hervé Henry - publié le , mis à jour le

Jeudi 30 novembre à 11h en salle PMC

Guillaume Schull,(IPCMS, U. Strasbourg, CNRS)
"Electroluminescence and photoluminescence with sub-molecular resolution using STM"

Pushed to their limit, tip-enhanced photoluminescence and electroluminescence can be used to generate sub-molecularly resolved fluorescence maps of individual molecules. Combined with spectral selection and time-correlated measurements, these hyper-resolved fluorescence microscopies allowed us to scrutinize the vibronic and charged states of individual molecules [1,2], to track the motion of hydrogen atoms within free-based phthalocyanine molecules [3,4], and to follow resonance energy transfers between individual pigments [5].
These results constitute an important step towards photonic measurements with atoms-scale resolution.


[1] B. Doppagne et al., Phys. Rev. Lett. 118, 127401 (2017)
[2] B. Doppagne et al. Science 361, 251 (2018)
[3] B. Doppagne et al. Nature Nanotechnol.15, 207 (2020).
[4] A. Roslawska et al. arXiv:2305.13157.
[5] S. Cao et al. Nature Chem. 12, 766 (2021)