Quantum dots and molecules
We investigate molecules and semiconducting nanocrystals (quantum dots) as single emitters and as emitter ensembles.
It takes a close look to understand how (and when) single quantum dots emit a photon [1]. In emitter ensembles, we analyzed radiationless energy transfer, including the role of particle plasmons [2,3]. Of fundamental as well as applied interest, we used the combination of plasmonic nanostructures and molecular layers to map plasmon fields [4] and to control light extraction in organic LEDs [5]. Furthermore, we investigate photoconductance in closely packed quantum dot films.
[1] M. Belitsch et al., Nano 13, 1850039 (2018)
[2] N. Reitinger et al., Phys. Stat. Sol. 208, 710 (2011)
[3] F. Reil et al., Nano Lett. 8, 4128 (2008)
[4] D.M. Koller et al., Phys. Rev. Lett. 104, 143901 (2010)
[5] M. Auer-Berger et al., Appl. Phys. Lett. 111, 173301 (2017)
