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Trifluoromethyl-Substituted Large Band-Gap Polytriphenylamines for Polymer Solar Cells with High Open-Circuit Voltages
Two large band-gap polymers (PTPACF and PTPA2CF) based on polytriphenylamine derivatives with the introduction of electron-withdrawing trifluoromethyl groups were designed and prepared by Suzuki polycondensation reaction. The chemical structures, thermal, optical and electrochemical properties were...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415081/ https://www.ncbi.nlm.nih.gov/pubmed/30966088 http://dx.doi.org/10.3390/polym10010052 |
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author | Yi, Shuwang Deng, Wanyuan Sun, Sheng Lan, Linfeng He, Zhicai Yang, Wei Zhang, Bin |
author_facet | Yi, Shuwang Deng, Wanyuan Sun, Sheng Lan, Linfeng He, Zhicai Yang, Wei Zhang, Bin |
author_sort | Yi, Shuwang |
collection | PubMed |
description | Two large band-gap polymers (PTPACF and PTPA2CF) based on polytriphenylamine derivatives with the introduction of electron-withdrawing trifluoromethyl groups were designed and prepared by Suzuki polycondensation reaction. The chemical structures, thermal, optical and electrochemical properties were characterized in detail. From the UV-visible absorption spectra, the PTPACF and PTPA2CF showed the optical band gaps of 2.01 and 2.07 eV, respectively. The cyclic voltammetry (CV) measurement displayed the deep highest occupied molecular orbital (HOMO) energy levels of −5.33 and −5.38 eV for PTPACF and PTPA2CF, respectively. The hole mobilities, determined by field-effect transistor characterization, were 2.5 × 10(−3) and 1.1 × 10(−3) cm(2) V(−1) S(−1) for PTPACF and PTPA2CF, respectively. The polymer solar cells (PSCs) were tested under the conventional device structure of ITO/PEDOT:PSS/polymer:PC(71)BM/PFN/Al. All of the PSCs showed the high open circuit voltages (V(oc)s) with the values approaching 1 V. The PTPACF and PTPA2CF based PSCs gave the power conversion efficiencies (PCEs) of 3.24% and 2.40%, respectively. Hence, it is a reliable methodology to develop high-performance large band-gap polymer donors with high V(oc)s through the feasible side-chain modification. |
format | Online Article Text |
id | pubmed-6415081 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64150812019-04-02 Trifluoromethyl-Substituted Large Band-Gap Polytriphenylamines for Polymer Solar Cells with High Open-Circuit Voltages Yi, Shuwang Deng, Wanyuan Sun, Sheng Lan, Linfeng He, Zhicai Yang, Wei Zhang, Bin Polymers (Basel) Article Two large band-gap polymers (PTPACF and PTPA2CF) based on polytriphenylamine derivatives with the introduction of electron-withdrawing trifluoromethyl groups were designed and prepared by Suzuki polycondensation reaction. The chemical structures, thermal, optical and electrochemical properties were characterized in detail. From the UV-visible absorption spectra, the PTPACF and PTPA2CF showed the optical band gaps of 2.01 and 2.07 eV, respectively. The cyclic voltammetry (CV) measurement displayed the deep highest occupied molecular orbital (HOMO) energy levels of −5.33 and −5.38 eV for PTPACF and PTPA2CF, respectively. The hole mobilities, determined by field-effect transistor characterization, were 2.5 × 10(−3) and 1.1 × 10(−3) cm(2) V(−1) S(−1) for PTPACF and PTPA2CF, respectively. The polymer solar cells (PSCs) were tested under the conventional device structure of ITO/PEDOT:PSS/polymer:PC(71)BM/PFN/Al. All of the PSCs showed the high open circuit voltages (V(oc)s) with the values approaching 1 V. The PTPACF and PTPA2CF based PSCs gave the power conversion efficiencies (PCEs) of 3.24% and 2.40%, respectively. Hence, it is a reliable methodology to develop high-performance large band-gap polymer donors with high V(oc)s through the feasible side-chain modification. MDPI 2018-01-08 /pmc/articles/PMC6415081/ /pubmed/30966088 http://dx.doi.org/10.3390/polym10010052 Text en © 2018 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 Yi, Shuwang Deng, Wanyuan Sun, Sheng Lan, Linfeng He, Zhicai Yang, Wei Zhang, Bin Trifluoromethyl-Substituted Large Band-Gap Polytriphenylamines for Polymer Solar Cells with High Open-Circuit Voltages |
title | Trifluoromethyl-Substituted Large Band-Gap Polytriphenylamines for Polymer Solar Cells with High Open-Circuit Voltages |
title_full | Trifluoromethyl-Substituted Large Band-Gap Polytriphenylamines for Polymer Solar Cells with High Open-Circuit Voltages |
title_fullStr | Trifluoromethyl-Substituted Large Band-Gap Polytriphenylamines for Polymer Solar Cells with High Open-Circuit Voltages |
title_full_unstemmed | Trifluoromethyl-Substituted Large Band-Gap Polytriphenylamines for Polymer Solar Cells with High Open-Circuit Voltages |
title_short | Trifluoromethyl-Substituted Large Band-Gap Polytriphenylamines for Polymer Solar Cells with High Open-Circuit Voltages |
title_sort | trifluoromethyl-substituted large band-gap polytriphenylamines for polymer solar cells with high open-circuit voltages |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415081/ https://www.ncbi.nlm.nih.gov/pubmed/30966088 http://dx.doi.org/10.3390/polym10010052 |
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