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Efficient Inverted Organic Solar Cells Based on a Fullerene Derivative-Modified Transparent Cathode

Indium tin oxide (ITO) is a transparent conductive material which is extensively used in organic solar cells (OSCs) as electrodes. In inverted OSCs, ITO is usually employed as a cathode, which should be modified by cathode buffer layers (CBLs) to achieve better contact with the active layers. In thi...

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Autores principales: Wang, Yifan, Cong, Hailin, Yu, Bing, Zhang, Zhiguo, Zhan, Xiaowei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5615718/
https://www.ncbi.nlm.nih.gov/pubmed/28891990
http://dx.doi.org/10.3390/ma10091064
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author Wang, Yifan
Cong, Hailin
Yu, Bing
Zhang, Zhiguo
Zhan, Xiaowei
author_facet Wang, Yifan
Cong, Hailin
Yu, Bing
Zhang, Zhiguo
Zhan, Xiaowei
author_sort Wang, Yifan
collection PubMed
description Indium tin oxide (ITO) is a transparent conductive material which is extensively used in organic solar cells (OSCs) as electrodes. In inverted OSCs, ITO is usually employed as a cathode, which should be modified by cathode buffer layers (CBLs) to achieve better contact with the active layers. In this paper, an amine group functionalized fullerene derivative (DMAPA-C(60)) is used as a CBL to modify the transparent cathode ITO in inverted OSCs based on PTB7 as a donor and PC(71)BM as an acceptor. Compared with traditional ZnO CBL, DMAPA-C(60) exhibited comparable transmittance. OSCs based on DMAPA-C(60) show much better device performance compared with their ZnO counterparts (power conversion efficiencies (PCEs) improved from 6.24 to 7.43%). This is mainly because a better contact between the DMAPA-C(60) modified ITO and the active layer is formed, which leads to better electron transport and collection. Nanoscale morphologies also demonstrate that the surface of DMAPA-C(60)-modified ITO is plainer than the ZnO counterparts, which also leads to the better device performance.
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spelling pubmed-56157182017-09-28 Efficient Inverted Organic Solar Cells Based on a Fullerene Derivative-Modified Transparent Cathode Wang, Yifan Cong, Hailin Yu, Bing Zhang, Zhiguo Zhan, Xiaowei Materials (Basel) Article Indium tin oxide (ITO) is a transparent conductive material which is extensively used in organic solar cells (OSCs) as electrodes. In inverted OSCs, ITO is usually employed as a cathode, which should be modified by cathode buffer layers (CBLs) to achieve better contact with the active layers. In this paper, an amine group functionalized fullerene derivative (DMAPA-C(60)) is used as a CBL to modify the transparent cathode ITO in inverted OSCs based on PTB7 as a donor and PC(71)BM as an acceptor. Compared with traditional ZnO CBL, DMAPA-C(60) exhibited comparable transmittance. OSCs based on DMAPA-C(60) show much better device performance compared with their ZnO counterparts (power conversion efficiencies (PCEs) improved from 6.24 to 7.43%). This is mainly because a better contact between the DMAPA-C(60) modified ITO and the active layer is formed, which leads to better electron transport and collection. Nanoscale morphologies also demonstrate that the surface of DMAPA-C(60)-modified ITO is plainer than the ZnO counterparts, which also leads to the better device performance. MDPI 2017-09-11 /pmc/articles/PMC5615718/ /pubmed/28891990 http://dx.doi.org/10.3390/ma10091064 Text en © 2017 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, Yifan
Cong, Hailin
Yu, Bing
Zhang, Zhiguo
Zhan, Xiaowei
Efficient Inverted Organic Solar Cells Based on a Fullerene Derivative-Modified Transparent Cathode
title Efficient Inverted Organic Solar Cells Based on a Fullerene Derivative-Modified Transparent Cathode
title_full Efficient Inverted Organic Solar Cells Based on a Fullerene Derivative-Modified Transparent Cathode
title_fullStr Efficient Inverted Organic Solar Cells Based on a Fullerene Derivative-Modified Transparent Cathode
title_full_unstemmed Efficient Inverted Organic Solar Cells Based on a Fullerene Derivative-Modified Transparent Cathode
title_short Efficient Inverted Organic Solar Cells Based on a Fullerene Derivative-Modified Transparent Cathode
title_sort efficient inverted organic solar cells based on a fullerene derivative-modified transparent cathode
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5615718/
https://www.ncbi.nlm.nih.gov/pubmed/28891990
http://dx.doi.org/10.3390/ma10091064
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