Combinatorial Screening of Polymer/Fullerene Blends for Organic Solar Cells by Inkjet Printing
-
Teichler, Anke; Eckardt, Rebecca; Höppener, Stephanie; Friebe, Christian; Perelaer, Jolke; Senes, Alessia; Morana, Mauro; Brabec, Christoph J.; Schubert, Ulrich S.
- Year:
- 2011
- Type of Publication:
- Article
- Journal:
- Advanced Energy Materials
- Volume:
- 1
- Pages:
- 105 - 114
- Note:
- Polymer:fullerene blends were screened in a combinatorial approach using
inkjet printing thin fi lm libraries for photovoltaic devices. The application of
inkjet printing enabled a fast and simple experimental workfl ow from fi lm
preparation to the study of structure-property-relationships with a very high
material effi ciency. Inkjet printing requires less material for the preparation
of thin fi lm libraries in comparison to other dispensing techniques, like
spin-coating. Two polymers (PCPDTBT, PSBTBT) and two fullerene derivatives
(mono-PCBM, bis-PCBM) were investigated in various blend ratios,
concentrations, solvent ratios, and fi lm thicknesses. Morphological and
optical properties of the inkjet printed fi lms were investigated and compared
with spin-coated fi lms. This study shows the principle of an experimental
setup from solution preparation to fi lm characterization for the combinatorial
investigation of large polymer:fullerene libraries.