Dresden 2014 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 19: Poster Session 1 (joint session with BP)
CPP 19.46: Poster
Tuesday, April 1, 2014, 09:30–13:00, P1
AFM, STXM, and TEM studies of DCV-5T:C60 absorber layers for highly efficient organic solar cells — •Tobias Mönch1, Peter Warnicke3, Peter Formanek2, Christian Körner1, and Karl Leo1 — 1TU Dresden, IAPP, Dresden — 2Leibniz-Institut für Polymerforschung Dresden e.V., Dresden — 3Paul Scherrer Institut, Villigen, Schweiz
The optoelectronic properties of organic thin film solar cells are closely related to the microstructure of the self-organized, nanostructured network of donor and acceptor molecules. Hence, the microstructure plays a crucial role in the understanding and optimization of organic solar cells. Here we use multiple high-resolution (<40 nm) techniques to study the relationship between the microstructure and electronic properties of the device: scanning transmission X-ray microscopy (STXM), photoconductive atomic force microscopy (pcAFM), and transmission electron microscopy (TEM) were used to study local chemical composition, local charge transport, and local crystallinity, respectively. Utilizing these techniques we study the impact of in-vacuo substrate heating on the phase separation of DCV-5T:C60 (2:1 by volume) blends, used in highly efficient organic solar cells.