title: Codependence between Crystalline and Photovoltage Evolutions in P3HT:PCBM Solar Cells Probed with in-Operando GIWAXS.
abstract: We address the correlation between the crystalline state of photoactive materials in a model organic solar cell based on poly(3-hexylthiophene-2,5-diyl):phenyl-C60-butyric acid methyl ester (P3HT:PCBM) and the photovoltage in an in-operando investigation. I-V curves are simultaneously measured together with grazing incidence wide-angle X-ray scattering probing the crystalline state of the device active layer as a function of the operation time. The results show a high degree of correlation between open-circuit voltage VOCand the crystalline state of P3HT.
authors.affiliation: Lehrstuhl für Funktionelle Materialien, Physik-Department, Technische Universität München , James-Franck-Strasse 1, 85748 Garching, Germany.
authors.forename: Daniel
authors.identifier: http://orcid.org/0000-0002-8397-8834
authors.initials: D
authors.lastname: Moseguí González
authors.affiliation: Lehrstuhl für Funktionelle Materialien, Physik-Department, Technische Universität München , James-Franck-Strasse 1, 85748 Garching, Germany.
authors.forename: Christoph J
authors.initials: CJ
authors.lastname: Schaffer
authors.affiliation: Herzig Group, Munich School of Engineering, Technische Universität München , Lichtenbergstrasse 4, 85748 Garching, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Pröller
authors.affiliation: Lehrstuhl für Funktionelle Materialien, Physik-Department, Technische Universität München , James-Franck-Strasse 1, 85748 Garching, Germany.
authors.forename: Johannes
authors.initials: J
authors.lastname: Schlipf
authors.affiliation: Lehrstuhl für Funktionelle Materialien, Physik-Department, Technische Universität München , James-Franck-Strasse 1, 85748 Garching, Germany.
authors.forename: Lin
authors.initials: L
authors.lastname: Song
authors.affiliation: Elettra-Sincrotrone Trieste S.C.p.A. , Strada Statale 14-km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Sigrid
authors.identifier: http://orcid.org/0000-0001-6451-5159
authors.initials: S
authors.lastname: Bernstorff
authors.affiliation: Herzig Group, Munich School of Engineering, Technische Universität München , Lichtenbergstrasse 4, 85748 Garching, Germany.
authors.forename: Eva M
authors.initials: EM
authors.lastname: Herzig
authors.affiliation: Lehrstuhl für Funktionelle Materialien, Physik-Department, Technische Universität München , James-Franck-Strasse 1, 85748 Garching, Germany.
authors.forename: Peter
authors.identifier: http://orcid.org/0000-0002-9566-6088
authors.initials: P
authors.lastname: Müller-Buschbaum
keywords: GIWAXS; crystallinity; in-operando; nanomorphology; organic photovoltaics