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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/24020

Title: Designing Small Molecule Organic Solar Cells with High Open-Circuit Voltage
Authors: Kudrjasova, Julija
Van Landeghem, Melissa
Vangerven, Tim
Kesters, Jurgen
Heintges, Gael H. L.
Cardinaletti, Ilaria
Lenaerts, Ruben
Penxten, Huguette
Adriaensens, Peter
Lutsen, Laurence
Vanderzande, Dirk
Manca, Jean
Goovaerts, Etienne
Maes, Wouter
Issue Date: 2017
Citation: CHEMISTRYSELECT, 2(3), p. 1253-1261
Abstract: Three extended 2,5-dithienylthiazolo[5,4-d] thiazole-based small molecule chromophores are prepared via a sustainable direct arylation approach and their physicochemical and opto-electrical material characteristics are analyzed toward integration in solution-processed bulk heterojunction organic photo-voltaics. Efficient charge separation and high values of the charge transfer state energy are derived from sensitive ground and excited state absorption and photoluminescence measurements on blends of the thiazolo[5,4-d] thiazole-based electron donor components with the PC71BM fullerene acceptor. Upon implementation in organic solar cells, a maximum power conversion efficiency of 2.7% and particularly high open-circuit voltages (0.93 - 0.98 V) are observed, which are correlated to the charge transfer state energies as derived from photoluminescence, Fourier transform photocurrent spectroscopy and combined electrochemical and photophysical data. Furthermore, several loss processes at the origin of the modest short-circuit current densities and fill factors are elucidated.
Notes: [Kudrjasova, Julija; Vangerven, Tim; Kesters, Jurgen; Heintges, Gael H. L.; Cardinaletti, Ilaria; Lenaerts, Ruben; Penxten, Huguette; Adriaensens, Peter; Vanderzande, Dirk; Maes, Wouter] UHasselt Hasselt Univ, Inst Mat Res IMO IMOMEC, Design & Synth Organ Semicond DSOS Mat Phys NMR, Agoralaan, B-3590 Diepenbeek, Belgium. [Kudrjasova, Julija; Vangerven, Tim; Kesters, Jurgen; Cardinaletti, Ilaria; Lenaerts, Ruben; Adriaensens, Peter; Lutsen, Laurence; Vanderzande, Dirk; Maes, Wouter] IMEC VZW, Associated Lab IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. [Van Landeghem, Melissa; Goovaerts, Etienne] Univ Antwerp, Dept Phys, Univ Pl 1, B-2610 Antwerp, Belgium. [Heintges, Gael H. L.] Eindhoven Univ Technol, Inst Complex Mol Syst Mol Mat & Nanosyst, POB 513, NL-5600 MB Eindhoven, Netherlands. [Manca, Jean] UHasselt Hasselt Univ, Agoralaan, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/24020
DOI: 10.1002/slct.201601915
ISI #: 000395533100065
ISSN: 2365-6549
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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