Codependence between Crystalline and Photovoltage Evolutions in P3HT:PCBM Solar Cells Probed with in-Operando GIWAXS

Daniel Moseguí González; Christoph J Schaffer; Stephan Pröller; Johannes Schlipf; Lin Song; Sigrid Bernstorff; Eva M Herzig; Peter Müller-Buschbaum

doi:10.1021/acsami.6b15661

Codependence between Crystalline and Photovoltage Evolutions in P3HT:PCBM Solar Cells Probed with in-Operando GIWAXS

ACS Appl Mater Interfaces. 2017 Feb 1;9(4):3282-3287. doi: 10.1021/acsami.6b15661. Epub 2017 Jan 20.

Authors

Daniel Moseguí González¹, Christoph J Schaffer¹, Stephan Pröller², Johannes Schlipf¹, Lin Song¹, Sigrid Bernstorff³, Eva M Herzig², Peter Müller-Buschbaum¹

Affiliations

¹ Lehrstuhl für Funktionelle Materialien, Physik-Department, Technische Universität München , James-Franck-Strasse 1, 85748 Garching, Germany.
² Herzig Group, Munich School of Engineering, Technische Universität München , Lichtenbergstrasse 4, 85748 Garching, Germany.
³ Elettra-Sincrotrone Trieste S.C.p.A. , Strada Statale 14-km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.

PMID: 28094911
DOI: 10.1021/acsami.6b15661

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 V_OC and the crystalline state of P3HT.

Keywords: GIWAXS; crystallinity; in-operando; nanomorphology; organic photovoltaics.