Fig. 1: Photon-induced current and luminescence of a single open-shell molecule in a STM-nanocavity. | Nature Communications

Fig. 1: Photon-induced current and luminescence of a single open-shell molecule in a STM-nanocavity.

From: Disentangling the components of a multiconfigurational excited state in isolated chromophore with light-scanning-tunneling microscopy

Fig. 1

a Scheme of the experiment: plasmonic tip apex is illuminated by focused laser light and scanned parallel to the surface plane of 3ML-NaCl/Ag(111) above an organic radical dye, PTCDA anion. The laser light is focused by the plasmonic cavity and excites the molecule, inducing photoluminescence and electron tunneling between the molecule and the tip or the substrate. b The recorded net tunneling current map above a group of four identical molecules. A model of PTCDA is shown for orientation (2x magnified). c A map of the photon rate at the photodetector with a 912-938 nm bandpass filter. The measurements were taken with 785 nm excitation wavelength and at zero bias voltage. The map sizes are 14 × 8.5 nm2.

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