title: Wide-Bandgap Benzodithiophene-Benzothiadiazole Copolymers for Highly Efficient Multijunction Polymer Solar Cells.
abstract: Novel wide-bandgap semiconducting polymers are designed and synthesized for multijunction polymer solar cell (PSC) applications. In single-junction PSCs, BDT-FBT-2T exhibits efficiencies exceeding 6.5% for active layer thicknesses between 90 and 250 nm, with the highest efficiency of 7.7% at 100 and 250 nm. This enables tandem PSCs to be created with an efficiency of 8.9%.
authors.affiliation: Molecular Materials and Nanosystems, Institute for Complex Molecular Systems, Eindhoven University of Technology, P. O. Box 513, 5600, MB, Eindhoven, The Netherlands.
authors.forename: Chunhui
authors.initials: C
authors.lastname: Duan
authors.affiliation: Molecular Materials and Nanosystems, Institute for Complex Molecular Systems, Eindhoven University of Technology, P. O. Box 513, 5600, MB, Eindhoven, The Netherlands.
authors.forename: Alice
authors.initials: A
authors.lastname: Furlan
authors.affiliation: Molecular Materials and Nanosystems, Institute for Complex Molecular Systems, Eindhoven University of Technology, P. O. Box 513, 5600, MB, Eindhoven, The Netherlands.
authors.forename: Jacobus J
authors.initials: JJ
authors.lastname: van Franeker
authors.affiliation: Molecular Materials and Nanosystems, Institute for Complex Molecular Systems, Eindhoven University of Technology, P. O. Box 513, 5600, MB, Eindhoven, The Netherlands.
authors.forename: Robin E M
authors.initials: REM
authors.lastname: Willems
authors.affiliation: Molecular Materials and Nanosystems, Institute for Complex Molecular Systems, Eindhoven University of Technology, P. O. Box 513, 5600, MB, Eindhoven, The Netherlands.|Dutch Institute for Fundamental Energy Research, De Zaale 20, 5612, AJ, Eindhoven, The Netherlands.
authors.forename: Martijn M
authors.initials: MM
authors.lastname: Wienk
authors.affiliation: Molecular Materials and Nanosystems, Institute for Complex Molecular Systems, Eindhoven University of Technology, P. O. Box 513, 5600, MB, Eindhoven, The Netherlands.|Dutch Institute for Fundamental Energy Research, De Zaale 20, 5612, AJ, Eindhoven, The Netherlands.
authors.forename: René A J
authors.initials: RAJ
authors.lastname: Janssen
keywords: high efficiency; multijunction; polymer solar cells; wide-bandgap polymers