Journal article
In-line, roll-to-roll morphology analysis of organic solar cell active layers
Department of Energy Conversion and Storage, Technical University of Denmark1
Organic Energy Materials, Department of Energy Conversion and Storage, Technical University of Denmark2
SLAC National Accelerator Laboratory3
Imaging and Structural Analysis, Department of Energy Conversion and Storage, Technical University of Denmark4
We present the first comparative in situ small and wide angle X-ray scattering study of two polymers that are relevant for organic photovoltaics, during coating on a flexible substrate. From the obtained measurements we identified several differences between the drying of the two polymers. The polymer optimized for roll-to-roll coating attained its final morphological packing nearly instantly after deposition, and had the shortest drying profile.
We therefore conclude that fast-drying polymers which are influenced less by drying temperature or substrate inhomogeneities are better suited for roll-to-roll coating, and that fundamentally, the kinetics of drying dominate the process in the case of roll-to-roll slot-die coating.
Language: | English |
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Publisher: | The Royal Society of Chemistry |
Year: | 2017 |
Pages: | 2411-2419 |
ISSN: | 17545706 and 17545692 |
Types: | Journal article |
DOI: | 10.1039/C7EE01900A |
ORCIDs: | Rossander, Lea Hildebrandt , 0000-0002-3304-5016 , 0000-0002-9144-180X , Helgesen, Martin , 0000-0003-4397-4801 , Krebs, Frederik C and Andreasen, Jens Wenzel |