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Integrated Effects of Two Additives on the Enhanced Performance of PTB7:PC(71)BM Polymer Solar Cells

Organic photovoltaics (OPVs) are fabricated with blended active layers of poly [[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno[3,4-b]thiophenediyl]]: [6,6]-phenylC71-butyric acid methyl ester (PTB7:PC(71)BM). The active layers are...

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Autores principales: Wang, Lin, Zhao, Suling, Xu, Zheng, Zhao, Jiao, Huang, Di, Zhao, Ling
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456692/
https://www.ncbi.nlm.nih.gov/pubmed/28773297
http://dx.doi.org/10.3390/ma9030171
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author Wang, Lin
Zhao, Suling
Xu, Zheng
Zhao, Jiao
Huang, Di
Zhao, Ling
author_facet Wang, Lin
Zhao, Suling
Xu, Zheng
Zhao, Jiao
Huang, Di
Zhao, Ling
author_sort Wang, Lin
collection PubMed
description Organic photovoltaics (OPVs) are fabricated with blended active layers of poly [[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno[3,4-b]thiophenediyl]]: [6,6]-phenylC71-butyric acid methyl ester (PTB7:PC(71)BM). The active layers are prepared in chlorobenzene (CB) added different additives of 1, 8-Diiodooctane (DIO) and polystyrene (PS) with different concentrations by spin coating. A small addition, 0.5%–5% by weight relative to the BHJ components, of inert high molecular weight PS is used to increase the solution viscosity and film thickness without sacrificing desirable phase separation and structural order. The effects of the PS are studied with respect of photovoltaic parameters such as fill factor, short circuit current density, and power conversion efficiency. Together with DIO, the device with 3.0 v% DIO and 1 wt % PS shows a high power conversion efficiency (PCE) of 8.92% along with an open-circuit voltage (V(oc)) of 0.76 V, a short-circuit current (J(sc)) of 16.37 mA/cm(2), and a fill factor (FF) of 71.68%. The absorption and surface morphology of the active layers are investigated by UV-visible spectroscopy, atomic force microscopy (AFM) respectively. The positive effect of DIO and PS additives on the performance of the OPVs is attributed to the increased absorption and the charge carrier transport and collection.
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spelling pubmed-54566922017-07-28 Integrated Effects of Two Additives on the Enhanced Performance of PTB7:PC(71)BM Polymer Solar Cells Wang, Lin Zhao, Suling Xu, Zheng Zhao, Jiao Huang, Di Zhao, Ling Materials (Basel) Article Organic photovoltaics (OPVs) are fabricated with blended active layers of poly [[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno[3,4-b]thiophenediyl]]: [6,6]-phenylC71-butyric acid methyl ester (PTB7:PC(71)BM). The active layers are prepared in chlorobenzene (CB) added different additives of 1, 8-Diiodooctane (DIO) and polystyrene (PS) with different concentrations by spin coating. A small addition, 0.5%–5% by weight relative to the BHJ components, of inert high molecular weight PS is used to increase the solution viscosity and film thickness without sacrificing desirable phase separation and structural order. The effects of the PS are studied with respect of photovoltaic parameters such as fill factor, short circuit current density, and power conversion efficiency. Together with DIO, the device with 3.0 v% DIO and 1 wt % PS shows a high power conversion efficiency (PCE) of 8.92% along with an open-circuit voltage (V(oc)) of 0.76 V, a short-circuit current (J(sc)) of 16.37 mA/cm(2), and a fill factor (FF) of 71.68%. The absorption and surface morphology of the active layers are investigated by UV-visible spectroscopy, atomic force microscopy (AFM) respectively. The positive effect of DIO and PS additives on the performance of the OPVs is attributed to the increased absorption and the charge carrier transport and collection. MDPI 2016-03-05 /pmc/articles/PMC5456692/ /pubmed/28773297 http://dx.doi.org/10.3390/ma9030171 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
Wang, Lin
Zhao, Suling
Xu, Zheng
Zhao, Jiao
Huang, Di
Zhao, Ling
Integrated Effects of Two Additives on the Enhanced Performance of PTB7:PC(71)BM Polymer Solar Cells
title Integrated Effects of Two Additives on the Enhanced Performance of PTB7:PC(71)BM Polymer Solar Cells
title_full Integrated Effects of Two Additives on the Enhanced Performance of PTB7:PC(71)BM Polymer Solar Cells
title_fullStr Integrated Effects of Two Additives on the Enhanced Performance of PTB7:PC(71)BM Polymer Solar Cells
title_full_unstemmed Integrated Effects of Two Additives on the Enhanced Performance of PTB7:PC(71)BM Polymer Solar Cells
title_short Integrated Effects of Two Additives on the Enhanced Performance of PTB7:PC(71)BM Polymer Solar Cells
title_sort integrated effects of two additives on the enhanced performance of ptb7:pc(71)bm polymer solar cells
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456692/
https://www.ncbi.nlm.nih.gov/pubmed/28773297
http://dx.doi.org/10.3390/ma9030171
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