Regensburg 2019 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 7: Organic photovoltaics and electronics (joint session HL/CPP)

HL 7.1: Vortrag

Montag, 1. April 2019, 15:00–15:15, H31

Spectroscopy of Oligoacene molecules attached to Argon clusters — •Matthias Bohlen1, Corey A. Rice1, Aaron LaForge1,2, and Frank Stienkemeier11Institute of Physics, University of Freiburg, Hermann-Herder-Str. 3, D-79104 Freiburg — 2University of Connecticut, Department of Physics, 2152 Hillside Rd, Storrs, CT, USA

Energy conversion efficiency for solar cells is generally limited by the Shockley-Queisser limit [1]. One way to circumvent this limit is through the use of organic photovoltaics (OPV), where specific charge and energy transfer processes can lead to higher conversion efficiencies. Polyaromatic hydrocarbons such as oligoacene molecules exhibit interesting quantum effects such as singlet fission, triplet-triplet annihilation, or superradiance and make promising candidates for OPV applications. Recently anthracene, tetracene and pentacene molecules adhered to the surface of neon clusters have been shown to provide interesting model systems for detailed studies of such effects [2]. We want to extend these measurements by spectroscopy of oligoacenes deposited to the surface of argon clusters.

[1] W. Shockley and H. J. Queisser, J Appl Phys 32, 510 (1961)

[2] S. Izadnia et al., J. Phys. Chem. Lett.*8,*2068 (2017)

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