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Efficient Organic Solar Cells with Polymer-Small Molecule: Fullerene Ternary Active Layers

[Image: see text] In this study, we report organic solar cells (OSCs) fabricated by a polymer-small molecule: the fullerene ternary active layer. It is found that a significantly enhanced power conversion efficiency contributed to the enhanced short-circuit current density and fill factor (FF). Inve...

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Autores principales: Xu, Wenzhan, Yi, Chao, Yao, Xiang, Jiang, Lili, Gong, Xiong, Cao, Yong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2017
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6641064/
https://www.ncbi.nlm.nih.gov/pubmed/31457542
http://dx.doi.org/10.1021/acsomega.7b00269
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author Xu, Wenzhan
Yi, Chao
Yao, Xiang
Jiang, Lili
Gong, Xiong
Cao, Yong
author_facet Xu, Wenzhan
Yi, Chao
Yao, Xiang
Jiang, Lili
Gong, Xiong
Cao, Yong
author_sort Xu, Wenzhan
collection PubMed
description [Image: see text] In this study, we report organic solar cells (OSCs) fabricated by a polymer-small molecule: the fullerene ternary active layer. It is found that a significantly enhanced power conversion efficiency contributed to the enhanced short-circuit current density and fill factor (FF). Investigation of absorption spectra and external quantum efficiency spectra indicate that the enhancement in photocurrent originates from the improved light absorption attributed to the small molecule. Further investigations by grazing-incidence wide-angle X-ray scattering, transmission electron microscopy, and atomic force microscopy reveal that charge transport within the ternary active layer is facilitated by a reduced π–π distance between the adjacent polymer chains along the out-of-plane direction, good miscibilities between ternary components, and the rougher surface of the resultant thin film. As a result, the hole mobility of the polymer electron donor and electron mobility of the fullerene electron acceptor are considerably increased, resulting in enhanced FFs. Our studies provide a facile route to realize efficient OSCs.
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spelling pubmed-66410642019-08-27 Efficient Organic Solar Cells with Polymer-Small Molecule: Fullerene Ternary Active Layers Xu, Wenzhan Yi, Chao Yao, Xiang Jiang, Lili Gong, Xiong Cao, Yong ACS Omega [Image: see text] In this study, we report organic solar cells (OSCs) fabricated by a polymer-small molecule: the fullerene ternary active layer. It is found that a significantly enhanced power conversion efficiency contributed to the enhanced short-circuit current density and fill factor (FF). Investigation of absorption spectra and external quantum efficiency spectra indicate that the enhancement in photocurrent originates from the improved light absorption attributed to the small molecule. Further investigations by grazing-incidence wide-angle X-ray scattering, transmission electron microscopy, and atomic force microscopy reveal that charge transport within the ternary active layer is facilitated by a reduced π–π distance between the adjacent polymer chains along the out-of-plane direction, good miscibilities between ternary components, and the rougher surface of the resultant thin film. As a result, the hole mobility of the polymer electron donor and electron mobility of the fullerene electron acceptor are considerably increased, resulting in enhanced FFs. Our studies provide a facile route to realize efficient OSCs. American Chemical Society 2017-05-04 /pmc/articles/PMC6641064/ /pubmed/31457542 http://dx.doi.org/10.1021/acsomega.7b00269 Text en Copyright © 2017 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Xu, Wenzhan
Yi, Chao
Yao, Xiang
Jiang, Lili
Gong, Xiong
Cao, Yong
Efficient Organic Solar Cells with Polymer-Small Molecule: Fullerene Ternary Active Layers
title Efficient Organic Solar Cells with Polymer-Small Molecule: Fullerene Ternary Active Layers
title_full Efficient Organic Solar Cells with Polymer-Small Molecule: Fullerene Ternary Active Layers
title_fullStr Efficient Organic Solar Cells with Polymer-Small Molecule: Fullerene Ternary Active Layers
title_full_unstemmed Efficient Organic Solar Cells with Polymer-Small Molecule: Fullerene Ternary Active Layers
title_short Efficient Organic Solar Cells with Polymer-Small Molecule: Fullerene Ternary Active Layers
title_sort efficient organic solar cells with polymer-small molecule: fullerene ternary active layers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6641064/
https://www.ncbi.nlm.nih.gov/pubmed/31457542
http://dx.doi.org/10.1021/acsomega.7b00269
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