Regensburg 2022 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 25: Poster 1
HL 25.54: Poster
Wednesday, September 7, 2022, 18:00–20:00, P2
Towards charge-carrier transport studies in organic semiconductors strongly coupled to the electromagnetic vacuum field — •Daniel Vitroler1,2, James W. Borchert1, and R. Thomas Weitz1 — 1Universität Göttingen, Göttingen, Deutschland — 2LMU München, München, Deutschland
Strong coupling between the vacuum field and an excitonic transition in a semiconductor using plasmonic resonators or optical cavities leads to the formation of exciton polaritons [1]. Among the many prospective uses of strong coupling, recent studies have demonstrated that the formation of polaritons is an intriguing potential approach for improving charge transport in e.g. organic semiconductors [2]. However, there have so far been limited experimental demonstrations of strongly-coupled organic transistors [3], leaving many questions about the detailed physics of charge-carrier transport in these devices. In this work, we investigate light-matter coupling in thin films based on a perylene diimide derivate (PDI1MPCN2) which has previously shown electron mobilities as high as 4 cm2/Vs in organic transistors [4]. Tuned Fabry-Pérot cavities were implemented to achieve strong coupling to an excitonic transition of PDI1MPCN2 dispersed in a polymer matrix.
[1] Garcia-Vidal, F. J. et al. Science. 373, eabd0336 (2021).
[2] Hagenmüller, D. et al. Phys. Rev. Lett. 119, 223601 (2017).
[3] Orgiu, E. et al. Nature Mater. 14, 1123-1129 (2015).
[4] Vladimirov, I. et al. Nano Lett. 18, 9-14 (2018).