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Enhanced Charge Separation in Ternary P3HT/PCBM/CuInS(2) Nanocrystals Hybrid Solar Cells

Geminate recombination of bound polaron pairs at the donor/acceptor interface is one of the major loss mechanisms in organic bulk heterojunction solar cells. One way to overcome Coulomb attraction between opposite charge carriers and to achieve their full dissociation is the introduction of high die...

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Autores principales: Lefrançois, Aurélie, Luszczynska, Beata, Pepin-Donat, Brigitte, Lombard, Christian, Bouthinon, Benjamin, Verilhac, Jean-Marie, Gromova, Marina, Faure-Vincent, Jérôme, Pouget, Stéphanie, Chandezon, Frédéric, Sadki, Saïd, Reiss, Peter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4295099/
https://www.ncbi.nlm.nih.gov/pubmed/25588811
http://dx.doi.org/10.1038/srep07768
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author Lefrançois, Aurélie
Luszczynska, Beata
Pepin-Donat, Brigitte
Lombard, Christian
Bouthinon, Benjamin
Verilhac, Jean-Marie
Gromova, Marina
Faure-Vincent, Jérôme
Pouget, Stéphanie
Chandezon, Frédéric
Sadki, Saïd
Reiss, Peter
author_facet Lefrançois, Aurélie
Luszczynska, Beata
Pepin-Donat, Brigitte
Lombard, Christian
Bouthinon, Benjamin
Verilhac, Jean-Marie
Gromova, Marina
Faure-Vincent, Jérôme
Pouget, Stéphanie
Chandezon, Frédéric
Sadki, Saïd
Reiss, Peter
author_sort Lefrançois, Aurélie
collection PubMed
description Geminate recombination of bound polaron pairs at the donor/acceptor interface is one of the major loss mechanisms in organic bulk heterojunction solar cells. One way to overcome Coulomb attraction between opposite charge carriers and to achieve their full dissociation is the introduction of high dielectric permittivity materials such as nanoparticles of narrow band gap semiconductors. We selected CuInS(2) nanocrystals of 7.4 nm size, which present intermediate energy levels with respect to poly(3-hexylthiophene) (P3HT) and Phenyl-C61-butyric acid methyl ester (PCBM). Efficient charge transfer from P3HT to nanocrystals takes place as evidenced by light-induced electron spin resonance. Charge transfer between nanocrystals and PCBM only occurs after replacing bulky dodecanethiol (DDT) surface ligands with shorter 1,2-ethylhexanethiol (EHT) ligands. Solar cells containing in the active layer a ternary blend of P3HT:PCBM:CuInS(2)-EHT nanocrystals in 1:1:0.5 mass ratio show strongly improved short circuit current density and a higher fill factor with respect to the P3HT:PCBM reference device. Complementary measurements of the absorption properties, external quantum efficiency and charge carrier mobility indicate that enhanced charge separation in the ternary blend is at the origin of the observed behavior. The same trend is observed for blends using the glassy polymer poly(triarylamine) (PTAA).
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spelling pubmed-42950992015-01-27 Enhanced Charge Separation in Ternary P3HT/PCBM/CuInS(2) Nanocrystals Hybrid Solar Cells Lefrançois, Aurélie Luszczynska, Beata Pepin-Donat, Brigitte Lombard, Christian Bouthinon, Benjamin Verilhac, Jean-Marie Gromova, Marina Faure-Vincent, Jérôme Pouget, Stéphanie Chandezon, Frédéric Sadki, Saïd Reiss, Peter Sci Rep Article Geminate recombination of bound polaron pairs at the donor/acceptor interface is one of the major loss mechanisms in organic bulk heterojunction solar cells. One way to overcome Coulomb attraction between opposite charge carriers and to achieve their full dissociation is the introduction of high dielectric permittivity materials such as nanoparticles of narrow band gap semiconductors. We selected CuInS(2) nanocrystals of 7.4 nm size, which present intermediate energy levels with respect to poly(3-hexylthiophene) (P3HT) and Phenyl-C61-butyric acid methyl ester (PCBM). Efficient charge transfer from P3HT to nanocrystals takes place as evidenced by light-induced electron spin resonance. Charge transfer between nanocrystals and PCBM only occurs after replacing bulky dodecanethiol (DDT) surface ligands with shorter 1,2-ethylhexanethiol (EHT) ligands. Solar cells containing in the active layer a ternary blend of P3HT:PCBM:CuInS(2)-EHT nanocrystals in 1:1:0.5 mass ratio show strongly improved short circuit current density and a higher fill factor with respect to the P3HT:PCBM reference device. Complementary measurements of the absorption properties, external quantum efficiency and charge carrier mobility indicate that enhanced charge separation in the ternary blend is at the origin of the observed behavior. The same trend is observed for blends using the glassy polymer poly(triarylamine) (PTAA). Nature Publishing Group 2015-01-15 /pmc/articles/PMC4295099/ /pubmed/25588811 http://dx.doi.org/10.1038/srep07768 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
spellingShingle Article
Lefrançois, Aurélie
Luszczynska, Beata
Pepin-Donat, Brigitte
Lombard, Christian
Bouthinon, Benjamin
Verilhac, Jean-Marie
Gromova, Marina
Faure-Vincent, Jérôme
Pouget, Stéphanie
Chandezon, Frédéric
Sadki, Saïd
Reiss, Peter
Enhanced Charge Separation in Ternary P3HT/PCBM/CuInS(2) Nanocrystals Hybrid Solar Cells
title Enhanced Charge Separation in Ternary P3HT/PCBM/CuInS(2) Nanocrystals Hybrid Solar Cells
title_full Enhanced Charge Separation in Ternary P3HT/PCBM/CuInS(2) Nanocrystals Hybrid Solar Cells
title_fullStr Enhanced Charge Separation in Ternary P3HT/PCBM/CuInS(2) Nanocrystals Hybrid Solar Cells
title_full_unstemmed Enhanced Charge Separation in Ternary P3HT/PCBM/CuInS(2) Nanocrystals Hybrid Solar Cells
title_short Enhanced Charge Separation in Ternary P3HT/PCBM/CuInS(2) Nanocrystals Hybrid Solar Cells
title_sort enhanced charge separation in ternary p3ht/pcbm/cuins(2) nanocrystals hybrid solar cells
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4295099/
https://www.ncbi.nlm.nih.gov/pubmed/25588811
http://dx.doi.org/10.1038/srep07768
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