Dresden 2017 – wissenschaftliches Programm
CPP 35.3: Vortrag
Mittwoch, 22. März 2017, 10:45–11:00, ZEU 222
In-operando study of changes in the crystalline parts of P3HT:PCBM solar cells — Daniel Moseguí González1, Christoph J. Schaffer1, Stephan Pröller2, Johannes Schlipf1, Lin Song1, Sigrid Bernstorff3, Eva M. Herzig2, and •Peter Müller-Buschbaum1 — 1TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching, Germany — 2TU München, MSE, Lichtenbergstr. 4, 85748 Garching — 3Elettra-Sincrotrone Trieste, 34149 Basovizza, Italy
Organic solar cells based on poly(3-hexylthiophen-2,5-diyl):phenyl-C60-butyric acid methyl ester (P3HT:PCBM) have developed into a well-controlled model system for studying fundamental questions, although device efficiencies of other blends using low band gap polymers demonstrated significantly higher device efficiencies. Based on an in-operando investigation of a P3HT:PCBM-based solar cell we address for the first time the correlation between the crystalline state of the materials in the organic solar cell and the open circuit voltage probed in the IV-characteristics. We use in-operando grazing incidence wide angle x-ray scattering to probe changes in the crystalline parts of the active layer. The findings give a better understanding of aging of organic solar cells during operation.