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Electrophoresis Assisted Printing : A Method To Control the Morphology in Organic Thin Films

Title data

Pröller, Stephan ; Filonik, Oliver ; Eller, Fabian ; Mansi, Salma ; Zhu, Chenhui ; Schaible, Eric ; Hexemer, Alexander ; Müller-Buschbaum, Peter ; Herzig, Eva M.:
Electrophoresis Assisted Printing : A Method To Control the Morphology in Organic Thin Films.
In: ACS Applied Materials & Interfaces. Vol. 12 (2020) Issue 5 . - pp. 5219-5225.
ISSN 1944-8252
DOI: https://doi.org/10.1021/acsami.9b18064

Abstract in another language

A major advantage of organic solar cells (OSC) is the processability out of solution allowing for advanced printing methods toward large-scale production. Controlling the blend morphology of solution coated active layers is a key challenge to optimize their power conversion efficiency. We have derived a printing procedure from an industrial coating process that facilitates tuning the nanomorphology of a blend of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as model system for OSCs. Applying an electric field during printing and the film drying process modifies the vertical film composition of the photoactive layer and optimizes the polymer crystal orientation. The choice of chloroform as solvent allows us to obtain material transport within the wet film, due to an induced electrophoretic mobility. Tailoring the morphology improves the power conversion efficiency of the OSCs by up to 25%. Our findings indicate that electrophoresis assisted printing provides an efficient approach to optimize the active layer for various material and solvent combinations that exhibit an electrophoretic mobility.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation - Juniorprof. Dr. Eva Maria Herzig
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 20 Mar 2020 06:24
Last Modified: 20 Mar 2020 06:24
URI: https://eref.uni-bayreuth.de/id/eprint/54646