Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 43: Scanning probe microscopy: light matter interaction at atomic scales – Poster
O 43.14: Poster
Dienstag, 10. März 2026, 14:00–16:00, P2
Light emission from dibenzoterrylene (DBT) molecules studied with STML — •Yannis Hilgers, Andreas Reutter, Markus Etzkorn, and Uta Schlickum — Institute of Applied Physics, LENA - TU Braunschweig, Braunschweig, Germany
Scanning Tunneling Microscopy induced Luiminescence (STML) has gathered great interest since its development in the late 1980s as it allows studying optical properties with atomic spatial resolution. With this technique, it has become possible to study quantum light sources like individual molecules exhibiting single photon emission, but obtaining high and reproducible photon yields has proven to remain challenging. With our self-built STML-setup, we achieve count rates about an order of magnitude higher than what has been reported in the past, allowing for measurements on more sensitive systems. Here, we present optical properties of dibenzoterrylene (DBT) molecules which have been reported as single photon sources when encapsulated inside a host lattice of Anthracene and Naphthalene. However, since both materials are not stable, we combine DBT molecules with a host lattice consisting of C60 multilayers, which is much more robust and even stable in air at room temperature. We found that light emission of individual DBT on C60 multilayers is indeed preserved. The emitted light was analyzed by means of photon maps and photon energy spectra.
Keywords: STM; STML; Excitons; Dibenzoterrylene