Gigahertz Frame Rate Imaging of Charge-Injection Dynamics in a Molecular Light Source - Archive ouverte HAL
Article Dans Une Revue Nano Letters Année : 2021

Gigahertz Frame Rate Imaging of Charge-Injection Dynamics in a Molecular Light Source

Résumé

Light sources on the scale of single molecules can be addressed and characterized at their proper sub-nanometer scale by scanning tunneling microscopy-induced luminescence (STML). Such a source can be driven by defined short charge pulses while the luminescence is detected with sub-nanosecond resolution. We introduce an approach to concurrently image the molecular emitter, which is based on an individual defect, with its local environment along with its luminescence dynamics at a resolution of a billion frames per second. The observed dynamics can be assigned to the single electron capture occurring in the low-nanosecond regime. While the emitter's location on the surface remains fixed, the scanning of the tip modifies the energy landscape for charge injection into the defect. The principle of measurement is extendable to fundamental processes beyond charge transfer, like exciton diffusion.
Fichier principal
Vignette du fichier
islandora_126837.pdf (2.87 Mo) Télécharger le fichier
Origine Publication financée par une institution

Dates et versions

hal-03450333 , version 1 (25-11-2021)

Licence

Identifiants

Citer

Anna Roslawska, Pablo Merino, Christopher C. Leon, Abhishek Grewal, Markus Etzkorn, et al.. Gigahertz Frame Rate Imaging of Charge-Injection Dynamics in a Molecular Light Source. Nano Letters, 2021, 21 (11), pp.4577-4583. ⟨10.1021/acs.nanolett.1c00328⟩. ⟨hal-03450333⟩
30 Consultations
33 Téléchargements

Altmetric

Partager

More