Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/25560
Title: | Conjugated ionic (co)polythiophene-based cathode interlayers for bulk heterojunction organic solar cells | Authors: | GOVAERTS, Sanne KESTERS, Jurgen Defour, Maxime Van Mele, Bruno PENXTEN, Huguette NEUPANE, Shova RENNER, Frank LUTSEN, Laurence VANDERZANDE, Dirk MAES, Wouter |
Issue Date: | 2017 | Publisher: | PERGAMON-ELSEVIER SCIENCE LTD | Source: | EUROPEAN POLYMER JOURNAL, 97, p. 49-56 | Abstract: | The incorporation of conjugated polyelectrolytes as cathode interlayers in organic photovoltaics has been proven to be an effective way to boost the device efficiency. Nevertheless, more detailed investigations of the structure property relationships of these interlayer materials, in particular related to the film deposition behavior, can provide further insights into their mode of action. With this aim, a series of ionic (co)polythiophenes is successfully synthesized via Kumada catalyst-transfer condensation polymerization and subsequent introduction of ionic moieties on the polymer side chains. Both the topology (i.e. homopolymers, random and block copolymers) and the amount of ionic groups are systematically varied. The polymers are fully characterized and then applied as cathode interlayers in polymer solar cells based on PCDTBT:PC71BM, affording an average efficiency increase of similar to 15%. The structural screening on one hand indicates that the efficiency gain is a rather general phenomenon for this material class. On the other hand, the best photovoltaic responses are observed for the conjugated polyelectrolytes with a higher triethylene glycol side chain ratio and the block copolymer structure performs slightly better as compared to the random copolymer with the same (50/50) monomer ratio. Based on these findings, the field can move on to a more rational development of novel interfacial materials and thereby push the device efficiency even further. | Notes: | [Govaerts, Sanne; Kesters, Jurgen; Penxten, Huguette; Vanderzande, Dirk; Maes, Wouter] UHasselt Hassell Univ, Inst Mat Res IMO, DSOS, B-3590 Diepenbeek, Belgium. [Defour, Maxime; Van Mele, Bruno] Vrije Univ Brussel, Phys Chem & Polymer Sci FYSC, Pleinlaan 2, B-1050 Brussels, Belgium. [Neupane, Shova; Renner, Frank Uwe] UHasselt Hasselt Univ, Inst Mat Res IMO, Energy Mat & Interfaces EMInt, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. [Renner, Frank Uwe; Lutsen, Laurence; Vanderzande, Dirk; Maes, Wouter] IMEC, IMOMEC Div, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. | Keywords: | Conjugated polyelectrolytes; Polymer solar cells; Interfacial materials; Topology; Structure-property relationships;Conjugated polyelectrolytes; Polymer solar cells; Interfacial materials; Topology; Structure-property relationships | Document URI: | http://hdl.handle.net/1942/25560 | ISSN: | 0014-3057 | e-ISSN: | 1873-1945 | DOI: | 10.1016/j.eurpolymj.2017.09.043 | ISI #: | 000419415800005 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2019 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
govaerts 1.pdf Restricted Access | Published version | 1.27 MB | Adobe PDF | View/Open Request a copy |
Revised ETL paper Govaerts et al.pdf | Peer-reviewed author version | 923.98 kB | Adobe PDF | View/Open |
SCOPUSTM
Citations
2
checked on Sep 3, 2020
WEB OF SCIENCETM
Citations
6
checked on Oct 12, 2024
Page view(s)
70
checked on Jun 13, 2022
Download(s)
180
checked on Jun 13, 2022
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.