Dresden 2014 – scientific programme

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DS: Fachverband Dünne Schichten

DS 27: Organic Thin Films II

DS 27.4: Talk

Wednesday, April 2, 2014, 15:45–16:00, CHE 91

Dynamics at Pentacene/C₆₀ interfaces studied by time resolved photoluminescence — •Nils Rosemann, Andrea Karthäuser, Gregor Witte, and Sangam Chatterjee — Philipps-Universität Marburg, Marburg, Germany

The combination of Pentacene (PEN) and C₆₀ is a promising model system for next-generation solar cells based on organic semiconductors. Here, the C₆₀ acts as an electron acceptor while PEN, on the other hand, attracts the holes. One of the remaining challenges in this system is the underlying charge-transfer mechanism. In general the efficiency of this charge separation will depend on the structural and electronic states at the interface. To study these dynamics, we performed time-resolved photoluminescence measurements on a thin PEN layer of standing molecules covered by C₆₀. The data indicate the formation of correlated states across the interface.