Dresden 2011 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 6: SKM Symposium: Elementary Processes in Organic Photovoltaics (SYOP)

HL 6.2: Hauptvortrag

Montag, 14. März 2011, 11:00–11:30, TRE Ma

Three-Dimensional Nanoscale Organization of Bulk Heterojunction Polymer Solar Cells — •Joachim Loos — University of Glasgow, School of Physics and Astronomy, Glasgow, Scotland, UK

Polymer and hybrid solar cells have the potential to become one of the leading technology of the 21st century in conversion of sun light to electrical energy because their ease processing from solution producing printable devices in a roll-to-roll fashion with high speed and low cost. The performance of such devices critically depends on the nanoscale organization of the photoactive layer, which is composed of at least two functional materials, the electron donor and the electron acceptor forming a so-called bulk heterojunction; however, control of its volume morphology still is a challenge. In this context, advanced analytical tools are required that are able to provide information on the local volume morphology of the photoactive layer with nanometer resolution. In this contribution we introduce electron tomography as the technique being able to explore the 3D morphology or polymer and hybrid solar cells and critically discuss first results achieved.