Efficient Inverted ITO-Free Organic Solar Cells Based on Transparent Silver Electrode with Aqueous Solution-Processed ZnO Interlayer

Efficient inverted organic solar cells (OSCs) with the MoO3 (2 nm)/Ag (12 nm) transparent cathode and an aqueous solution ZnO electron extraction layer processed at low temperature are investigated in this work. The blend of low bandgap poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-...

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Main Authors: Zhizhe Wang, Dazheng Chen, Chunfu Zhang, Zhenhua Lin, Yan Liu, Genquan Han, Jingjing Chang, Jincheng Zhang, Lixin Guo, Yue Hao
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:International Journal of Photoenergy
Online Access:http://dx.doi.org/10.1155/2017/1043264
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author Zhizhe Wang
Dazheng Chen
Chunfu Zhang
Zhenhua Lin
Yan Liu
Genquan Han
Jingjing Chang
Jincheng Zhang
Lixin Guo
Yue Hao
author_facet Zhizhe Wang
Dazheng Chen
Chunfu Zhang
Zhenhua Lin
Yan Liu
Genquan Han
Jingjing Chang
Jincheng Zhang
Lixin Guo
Yue Hao
author_sort Zhizhe Wang
collection DOAJ
description Efficient inverted organic solar cells (OSCs) with the MoO3 (2 nm)/Ag (12 nm) transparent cathode and an aqueous solution ZnO electron extraction layer processed at low temperature are investigated in this work. The blend of low bandgap 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]] (PTB7) and [6,6]-phenyl-C71-butyric acid methylester (PC71BM) is employed as the photoactive layer here. A power conversion efficiency (PCE) of 5.55% is achieved for such indium tin oxide- (ITO-) free OSCs under AM 1.5G simulated illumination, comparable to that of ITO-based reference OSCs (PCE of 6.11%). It is found that this ZnO interlayer not only slightly enhances the transparency of MoO3/Ag cathode but also obtains a lower root-mean-square (RMS) roughness on the MoO3/Ag surface. Meanwhile, ITO-free OSCs also show a good stability. The PCE of the devices still remains above 85% of the original values after 30 days, which is slightly superior to ITO-based reference OSCs where the 16% degradation in PCE is observed after 30 days. It may be instructive for further research of OSCs based on metal thin film electrodes.
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institution Kabale University
issn 1110-662X
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publishDate 2017-01-01
publisher Wiley
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series International Journal of Photoenergy
spelling doaj-art-31baf3343de24a24bdf216689df1df292025-02-03T06:08:21ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2017-01-01201710.1155/2017/10432641043264Efficient Inverted ITO-Free Organic Solar Cells Based on Transparent Silver Electrode with Aqueous Solution-Processed ZnO InterlayerZhizhe Wang0Dazheng Chen1Chunfu Zhang2Zhenhua Lin3Yan Liu4Genquan Han5Jingjing Chang6Jincheng Zhang7Lixin Guo8Yue Hao9China Electronic Product Reliability and Environmental Testing Research Institute, No. 110 Dongguanzhuang Road, Guangzhou 510610, ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, ChinaChina Electronic Product Reliability and Environmental Testing Research Institute, No. 110 Dongguanzhuang Road, Guangzhou 510610, ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, ChinaSchool of Physics and Optoeletronic Engineering, Xidian University, 2 South Taibai Road, Xi’an 710071, ChinaState Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, ChinaEfficient inverted organic solar cells (OSCs) with the MoO3 (2 nm)/Ag (12 nm) transparent cathode and an aqueous solution ZnO electron extraction layer processed at low temperature are investigated in this work. The blend of low bandgap 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]] (PTB7) and [6,6]-phenyl-C71-butyric acid methylester (PC71BM) is employed as the photoactive layer here. A power conversion efficiency (PCE) of 5.55% is achieved for such indium tin oxide- (ITO-) free OSCs under AM 1.5G simulated illumination, comparable to that of ITO-based reference OSCs (PCE of 6.11%). It is found that this ZnO interlayer not only slightly enhances the transparency of MoO3/Ag cathode but also obtains a lower root-mean-square (RMS) roughness on the MoO3/Ag surface. Meanwhile, ITO-free OSCs also show a good stability. The PCE of the devices still remains above 85% of the original values after 30 days, which is slightly superior to ITO-based reference OSCs where the 16% degradation in PCE is observed after 30 days. It may be instructive for further research of OSCs based on metal thin film electrodes.http://dx.doi.org/10.1155/2017/1043264
spellingShingle Zhizhe Wang
Dazheng Chen
Chunfu Zhang
Zhenhua Lin
Yan Liu
Genquan Han
Jingjing Chang
Jincheng Zhang
Lixin Guo
Yue Hao
Efficient Inverted ITO-Free Organic Solar Cells Based on Transparent Silver Electrode with Aqueous Solution-Processed ZnO Interlayer
International Journal of Photoenergy
title Efficient Inverted ITO-Free Organic Solar Cells Based on Transparent Silver Electrode with Aqueous Solution-Processed ZnO Interlayer
title_full Efficient Inverted ITO-Free Organic Solar Cells Based on Transparent Silver Electrode with Aqueous Solution-Processed ZnO Interlayer
title_fullStr Efficient Inverted ITO-Free Organic Solar Cells Based on Transparent Silver Electrode with Aqueous Solution-Processed ZnO Interlayer
title_full_unstemmed Efficient Inverted ITO-Free Organic Solar Cells Based on Transparent Silver Electrode with Aqueous Solution-Processed ZnO Interlayer
title_short Efficient Inverted ITO-Free Organic Solar Cells Based on Transparent Silver Electrode with Aqueous Solution-Processed ZnO Interlayer
title_sort efficient inverted ito free organic solar cells based on transparent silver electrode with aqueous solution processed zno interlayer
url http://dx.doi.org/10.1155/2017/1043264
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