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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...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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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. |
format | Online Article Text |
id | pubmed-5615718 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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