Journal article

Benzotriazole-based donor-acceptor conjugated polymers with a broad absorption in the visible range

Wallace WH Wong, Jegadesan Subbiah, Sreenivasa R Puniredd, Wojciech Pisula, David J Jones, Andrew B Holmes



A series of benzodithiophene-benzotriazole push-pull copolymers were synthesised and characterised and their performance in bulk heterojunction solar cells devices was assessed. By incorporating strong electron acceptor units, such as benzothiadiazole and pyridylthiadiazole, into the polymer backbone, significant absorption across the entire visible range (300 nm to 750 nm) was observed for the random copolymers. The importance of investigating photophysical as well as bulk material properties of the polymers was demonstrated with a correlation of properties with device performance. © The Royal Society of Chemistry.


Awarded by European Community's Seventh Framework Programme ONE-P

Awarded by DFG Priority Program

Awarded by DFG MU

Awarded by ESF Project GOSPEL

Funding Acknowledgements

This work was made possible by support from the Australian Solar Institute/ARENA (Fellowship for W. W. H. Wong and project grant), the Victorian Organic Solar Cell Consortium, the Victorian State Government Department of Business Innovation (Victorian Science Agenda) and the Department of Primary Industries (Energy Technology Innovation Strategy), the AAS-BMBF Australia-Germany Solar Photovoltaic Research Exchange Program, the German Science Foundation (Korean-German IR TG), the European Community's Seventh Framework Programme ONE-P (grant agreement no. 212311), DFG Priority Program SPP 1355, DFG MU 334/32-1, DFG Priority Program SPP 1459, and ESF Project GOSPEL (ref. no.: 09-EuroGRAPHENE-FP-001). We also thank Prof. Klaus Mullen for his support and interest in this project.