Berlin 2018 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 45: Organic photovoltaics and electronics
HL 45.4: Talk
Thursday, March 15, 2018, 15:45–16:00, EW 203
Circular Polarized Light Sensor based on Organic Photodiodes — •Manuela Schiek1, Matthias Schulz2, Dorothea Scheunemann1, Oliver Kolloge1, Arne Lützen2, Oriol Arteaga3, and Stefan C. J. Meskers4 — 1University of Oldenburg, D — 2University of Bonn, D — 3University of Barcelona, ES — 4University of Eindhoven, NL
Enantiopure prolinol-functionalized squaraines with opposite handedness have been obtained via an ex-chiral pool strategy. Strong intrinsic circular dichroism within the green spectral range is probed in spin-casted thin films by Mueller matrix spectroscopy. Blended with a fullerene acceptor these small molecular squaraines function as active layer in a photodiode with reasonable frequency response in transient photocurrent recordings. Within the green spectral range circular polarized light is highly selectively converted into photocurrent outperforming the polymer-based devices by far [1]. Connecting such photodiodes of opposite handedness, we provide a fully integrated organic circular polarization light sensor that does not require any active manipulation of the polarization of the incoming light. [1] J. Gilot, R. Abbel, G. Lakhwani, E.W. Meijer, A.P.H.J. Schenning, S.C.J. Meskers, Adv. Mater. 22 (2010) E131-E134.