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Title
Alternating Copolymers and Alternative Device Geometries for Organic Photovoltaics
Article in journal
Authors
Olle Inganäs, Fengling Zhang, Mats R Andersson
Publication Year
2012
Source
Ambio, 2012, (41), 138-142
Link to Source (DOI)
10.1007/s13280-012-0276-3
Abstract
<p>The efficiency of conversion of light to electrical energy with the help of conjugated polymers and molecules is rapidly improving. The optical absorption properties of these materials can be designed, and implemented via molecular engineering. Full coverage of the solar spectrum is thus feasible. Narrow absorption spectra allow construction of tandem solar cells. The poor transport properties of these materials require thin devices, which limits optical absorption. Alternative device geometries for these flexible materials compensate for the optical absorption by light trapping, and allow tandem cells.</p>