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The Influence of Conjugated Polymer Side Chain Manipulation on the Efficiency and Stability of Polymer Solar Cells

The stability of polymer solar cells (PSCs) can be influenced by the introduction of particular moieties on the conjugated polymer side chains. In this study, two series of donor-acceptor copolymers, based on bis(thienyl)dialkoxybenzene donor and benzo[c][1,2,5]thiadiazole (BT) or thiazolo[5,4-d]thi...

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Autores principales: Heckler, Ilona M., Kesters, Jurgen, Defour, Maxime, Madsen, Morten V., Penxten, Huguette, D’Haen, Jan, Van Mele, Bruno, Maes, Wouter, Bundgaard, Eva
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456685/
https://www.ncbi.nlm.nih.gov/pubmed/28773308
http://dx.doi.org/10.3390/ma9030181
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author Heckler, Ilona M.
Kesters, Jurgen
Defour, Maxime
Madsen, Morten V.
Penxten, Huguette
D’Haen, Jan
Van Mele, Bruno
Maes, Wouter
Bundgaard, Eva
author_facet Heckler, Ilona M.
Kesters, Jurgen
Defour, Maxime
Madsen, Morten V.
Penxten, Huguette
D’Haen, Jan
Van Mele, Bruno
Maes, Wouter
Bundgaard, Eva
author_sort Heckler, Ilona M.
collection PubMed
description The stability of polymer solar cells (PSCs) can be influenced by the introduction of particular moieties on the conjugated polymer side chains. In this study, two series of donor-acceptor copolymers, based on bis(thienyl)dialkoxybenzene donor and benzo[c][1,2,5]thiadiazole (BT) or thiazolo[5,4-d]thiazole (TzTz) acceptor units, were selected toward effective device scalability by roll-coating. The influence of the partial exchange (5% or 10%) of the solubilizing 2-hexyldecyloxy by alternative 2-phenylethoxy groups on efficiency and stability was investigated. With an increasing 2-phenylethoxy ratio, a decrease in solar cell efficiency was observed for the BT-based series, whereas the efficiencies for the devices based on the TzTz polymers remained approximately the same. The photochemical degradation rate for PSCs based on the TzTz polymers decreased with an increasing 2-phenylethoxy ratio. Lifetime studies under constant sun irradiance showed a diminishing initial degradation rate for the BT-based devices upon including the alternative side chains, whereas the (more stable) TzTz-based devices degraded at a faster rate from the start of the experiment upon partly exchanging the side chains. No clear trends in the degradation behavior, linked to the copolymer structural changes, could be established at this point, evidencing the complex interplay of events determining PSCs’ lifetime.
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spelling pubmed-54566852017-07-28 The Influence of Conjugated Polymer Side Chain Manipulation on the Efficiency and Stability of Polymer Solar Cells Heckler, Ilona M. Kesters, Jurgen Defour, Maxime Madsen, Morten V. Penxten, Huguette D’Haen, Jan Van Mele, Bruno Maes, Wouter Bundgaard, Eva Materials (Basel) Article The stability of polymer solar cells (PSCs) can be influenced by the introduction of particular moieties on the conjugated polymer side chains. In this study, two series of donor-acceptor copolymers, based on bis(thienyl)dialkoxybenzene donor and benzo[c][1,2,5]thiadiazole (BT) or thiazolo[5,4-d]thiazole (TzTz) acceptor units, were selected toward effective device scalability by roll-coating. The influence of the partial exchange (5% or 10%) of the solubilizing 2-hexyldecyloxy by alternative 2-phenylethoxy groups on efficiency and stability was investigated. With an increasing 2-phenylethoxy ratio, a decrease in solar cell efficiency was observed for the BT-based series, whereas the efficiencies for the devices based on the TzTz polymers remained approximately the same. The photochemical degradation rate for PSCs based on the TzTz polymers decreased with an increasing 2-phenylethoxy ratio. Lifetime studies under constant sun irradiance showed a diminishing initial degradation rate for the BT-based devices upon including the alternative side chains, whereas the (more stable) TzTz-based devices degraded at a faster rate from the start of the experiment upon partly exchanging the side chains. No clear trends in the degradation behavior, linked to the copolymer structural changes, could be established at this point, evidencing the complex interplay of events determining PSCs’ lifetime. MDPI 2016-03-09 /pmc/articles/PMC5456685/ /pubmed/28773308 http://dx.doi.org/10.3390/ma9030181 Text en © 2016 by the authors; Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Heckler, Ilona M.
Kesters, Jurgen
Defour, Maxime
Madsen, Morten V.
Penxten, Huguette
D’Haen, Jan
Van Mele, Bruno
Maes, Wouter
Bundgaard, Eva
The Influence of Conjugated Polymer Side Chain Manipulation on the Efficiency and Stability of Polymer Solar Cells
title The Influence of Conjugated Polymer Side Chain Manipulation on the Efficiency and Stability of Polymer Solar Cells
title_full The Influence of Conjugated Polymer Side Chain Manipulation on the Efficiency and Stability of Polymer Solar Cells
title_fullStr The Influence of Conjugated Polymer Side Chain Manipulation on the Efficiency and Stability of Polymer Solar Cells
title_full_unstemmed The Influence of Conjugated Polymer Side Chain Manipulation on the Efficiency and Stability of Polymer Solar Cells
title_short The Influence of Conjugated Polymer Side Chain Manipulation on the Efficiency and Stability of Polymer Solar Cells
title_sort influence of conjugated polymer side chain manipulation on the efficiency and stability of polymer solar cells
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456685/
https://www.ncbi.nlm.nih.gov/pubmed/28773308
http://dx.doi.org/10.3390/ma9030181
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