SAMOP 2023 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 59: Poster IV
Q 59.60: Poster
Thursday, March 9, 2023, 16:30–19:00, Empore Lichthof
Optical investigations of evaporated dibenzoterrylene layers in a C60-fullerene matrix — •Franziska Hirt1,2, Justus Christinck1,2, Helmuth Hofer2, Gunilla Harm2,3, Andreas Reutter2,3, Mike Stummvoll2,3, Neda Noei3, Uta Schlickum2,3, and Stefan Kück1,2 — 1Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig — 2Laboratory for Emerging Nanometrology, Langer Kamp 6a/b, 38106 Braunschweig — 3Technische Universität Braunschweig, Universitätsplatz 2, 38106 Braunschweig
Polycyclic aromatic hydrocarbons are suitable to be used in a single-photon source at cryogenic and room temperatures, respectively. One prerequisite is their embedment in a stabilizing solid matrix protecting them from oxygen and thermal induced bleaching effects. We report a method based on a high temperature and high vacuum deposition procedure allowing for a controllable growth of single layers of dibenzoterrylene (DBT) molecules. They are placed between several monolayers of C60-fullerenes, which are forming the protection against the environmental conditions. An absorption spectrum of this composite was measured, revealing a linear superposition. Raman spectroscopy measurements proved that the DBT molecules were still intact after being deposited. First experiments in a self-built confocal laser scanning microscope did not show any emission at all, indicating a quenching behavior of the molecule after being evaporated. Thermal annealing could cancel out these quenching and an emission of DBT layers was detected. Further investigations will be presented at the conference.