Journal article
Low Band Gap Polymers for Roll-to-Roll Coated Organic Photovoltaics – Design, Synthesis and Characterization
In this paper we present the design and synthesis of 25 new low band gap polymers. The polymers were characterized by UV-vis spectroscopy which showed optical band gaps of 2.0–0.9 eV. The polymers which were soluble enough were applied in organic photovoltaics, both small area devices with a spin coated active layer and in large area modules where all layers including the active layer were either roll-to-roll coated or printed.
These experiments showed that the design of polymers compatible with roll-toroll coating is not straightforward and that there are various issues such as donor/acceptor fitting within the polymer, side chains to ensure solubility and HOMO/LUMO level alignment with the acceptor (e.g. [60]PCBM) to take into consideration.
Language: | English |
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Year: | 2011 |
Pages: | 55-64 |
ISSN: | 18698778 and 1869876x |
Types: | Journal article |
DOI: | 10.1515/GREEN.2011.005 |
ORCIDs: | Bundgaard, Eva , Jørgensen, Mikkel and Krebs, Frederik C |