Title: Cyanine dye polyelectrolytes for organic bilayer solar cells
Authors : Wang, Lei
Hinderling, Christian
Jenatsch, Sandra
Nüesch, Frank
Rentsch, Daniel
Steim, Roland
Zhang, Hui
Hany, Roland
Published in : Polymer
Volume(Issue) : 55
Issue : 15
Pages : 3195
Pages to: 3201
Publisher / Ed. Institution : Elsevier
Issue Date: 2014
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subject (DDC) : 621.3: Electrical engineering and electronics
Abstract: Polyelectrolytes composed of an anionic sulfoethyl methacrylate/methacrylate backbone and cationic cyanine dyes counter ions are synthesized. The effective reaction sequence is confirmed by NMR spectroscopy and consists of a thermal radical copolymerization to obtain the polymer backbone (Mn ∼ 40 kg mol−1), followed by deprotonation of the sulfoethyl group and a salt metathesis reaction with elimination of silver halide to incorporate the dye. With increasing cyanine content (20–50% of polymer repeating units) polyelectrolytes become insoluble in apolar solvents. This allows the fabrication of simple solution-processed bilayer organic solar cells, where an electron acceptor fullerene layer is coated from the orthogonal solvent chlorobenzene onto an underlying polyelectrolyte electron donor layer. The optimization of solar cells is described, and photo-CELIV measurements are used to identify the low hole mobility in the polyelectrolyte layer as the main reason that currently limits solar cell performance to ∼0.9%.
Departement: Life Sciences und Facility Management
Organisational Unit: Institute of Chemistry and Biotechnology (ICBT)
Publication type: Article in scientific Journal
DOI : 10.1016/j.polymer.2014.05.035
ISSN: 0032-3861
1873-2291
URI: https://digitalcollection.zhaw.ch/handle/11475/13654
Appears in Collections:Publikationen Life Sciences und Facility Management

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