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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2017
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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. |
format | Online Article Text |
id | pubmed-6641064 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
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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