title: Alternating copolymers and alternative device geometries for organic photovoltaics.
abstract: 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.
authors.affiliation: Biomolecular and Organic Electronics, IFM, and Center of Organic Electronics, Linköping University, 581 83, Linköping, Sweden. ois@ifm.liu.se
authors.forename: Olle
authors.initials: O
authors.lastname: Inganäs
authors.forename: Fengling
authors.initials: F
authors.lastname: Zhang
authors.forename: Mats R
authors.initials: MR
authors.lastname: Andersson
mesh_terms: D011211:Electric Power Supplies; D011108:Polymers / Q000737:chemistry*; D012993:Solar Energy; D013472:Sunlight
chemical_list: D011108:Polymers