Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/14774
Title: | Ester-functionalized poly(3-alkylthiophene) copolymers: Synthesis, physicochemical characterization and performance in bulk heterojunction organic solar cells | Authors: | CAMPO, Bert BEVK, David KESTERS, Jurgen Gilot, Jan Bolink, Henk J. Zhao, Jun BOLSEE, Jean-Christophe OOSTERBAAN, Wibren BERTHO, Sabine D'HAEN, Jan MANCA, Jean LUTSEN, Laurence Van Assche, Guy MAES, Wouter Janssen, Rene A. J. VANDERZANDE, Dirk |
Issue Date: | 2013 | Publisher: | ELSEVIER SCIENCE BV | Source: | ORGANIC ELECTRONICS, 14 (2), p. 523-534 | Abstract: | The introduction of functional moieties in the donor polymer (side chains) offers a potential pathway toward selective modification of the nanomorphology of conjugated polymer:fullerene active layer blends applied in bulk heterojunction organic photovoltaics, pursuing morphology control and solar cell stability. For this purpose, two types of poly(3-alkylthiophene) random copolymers, incorporating different amounts (10/30/50%) of ester-functionalized side chains, were efficiently synthesized using the Rieke method. The solar cell performance of the functionalized copolymers was evaluated and compared to the pristine P3HT:PCBM system. It was observed that the physicochemical and opto-electronic characteristics of the polythiophene donor material can be modified to a certain extent via copolymerization without (too much) jeopardizing the OPV efficiency, as far as the functionalized side chains are introduced in a moderate ratio (<30%) and that preference is given to side chains with a small molar volume. A range of complementary techniques - UV-Vis spectroscopy, (modulated temperature) differential scanning calorimetry, transmission electron microscopy and X-ray diffraction analysis - indicated that variations in polymer crystallinity, while maintaining a high level of regioregularity, are probably the main factor responsible for the observed differences. (C) 2012 Elsevier B.V. All rights reserved. | Notes: | [Campo, Bert J.; Bevk, David; Kesters, Jurgen; Oosterbaan, Wibren D.; Lutsen, Laurence; Maes, Wouter; Vanderzande, Dirk] Hasselt Univ, Inst Mat Res IMO IMOMEC, B-3590 Diepenbeek, Belgium. [Gilot, Jan; Janssen, Rene A. J.] Eindhoven Univ Technol, NL-5600 MB Eindhoven, Netherlands. [Bolink, Henk J.] Univ Valencia, Inst Ciencia Mol, E-46071 Valencia, Spain. [Zhao, Jun; Van Assche, Guy] Vrije Univ Brussel, B-1050 Brussels, Belgium. [Bolsee, Jean-Christophe; Bertho, Sabine; D'Haen, Jan; Manca, Jean] Hasselt Univ, Inst Mat Res IMO IMOMEC, Organ & Nanostruct Elect & Energy Convers ONE2 El, B-3590 Diepenbeek, Belgium. [Manca, Jean; Lutsen, Laurence; Vanderzande, Dirk] IMEC, IMOMEC Ass Lab, B-3590 Diepenbeek, Belgium. | Keywords: | Poly(3-alkylthiophene); Random copolymer; Ester-functionalized side chain; Regioregular; Bulk heterojunction organic solar cell;Materials Science, Multidisciplinary; Physics, Applied | Document URI: | http://hdl.handle.net/1942/14774 | ISSN: | 1566-1199 | e-ISSN: | 1878-5530 | DOI: | 10.1016/j.orgel.2012.11.021 | ISI #: | 000314658700014 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2014 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
ester-functionalized.pdf Restricted Access | 696.98 kB | Adobe PDF | View/Open Request a copy |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.