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Nano Research 2018, 11(4): 1998-2011 https://doi.org/10.1007/s12274-017-1816-8
Research Article | Issue | Published: 19 March 2018

Long-term stable silver nanowire transparent composite as bottom electrode for perovskite solar cells

Show Author's Information Yunxia Jin1,2,  Yong Sun1,  Kaiqing Wang1,  Yani Chen1,  Ziqi Liang1,  Yuxi Xu2( ),  Fei Xiao1( )
Department of Materials ScienceFudan University, 220 Handan RoadShanghai200433China
Department of Macromolecular ScienceFudan University, 220 Handan RoadShanghai200433China
Keywords:
stability, silver nanowire, perovskite solar cell, ascorbic-acid-modified chitosan, transparent composite electrode
Cite this article:
Jin Y, Sun Y, Wang K, et al. Long-term stable silver nanowire transparent composite as bottom electrode for perovskite solar cells. Nano Research, 2018, 11(4): 1998-2011. https://doi.org/10.1007/s12274-017-1816-8
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Abstract Full text Electronic supplementary material About this article

As the most promising alternative to traditional indium tin oxide (ITO), silver nanowire (AgNW) composite transparent electrodes with improved stabilities compared with that of the pristine AgNWs networks have been demonstrated in various devices. However, a stable AgNW/polymer composite as the bottom electrode for perovskite solar cells has not yet been reported. Here, a long-term stable, smooth AgNW composite with an antioxidant-modified chitosan polymer was developed. The modified polymer can effectively protect pristine AgNWs from side reactions with perovskite, whereas it does not block the carrier drift through the interface of the insulating polymer. The as-prepared AgNW/polymer composite electrode exhibited a root mean square roughness below 10 nm at a scan size of 50 μm × 50 μm, and its original sheet resistance did not change obviously after aging at 85 ℃ for 40 days in air. As a result, the perovskite solar cell employing the composite as the bottom electrode yielded a power conversion efficiency of 7.9%, which corresponds to nearly 75% of that of the reference device with an ITO electrode.


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Electronic supplementary material
About this article

Long-term stable silver nanowire transparent composite as bottom electrode for perovskite solar cells

Show Author's information Yunxia Jin1,2, Yong Sun1, Kaiqing Wang1, Yani Chen1, Ziqi Liang1, Yuxi Xu2( ), Fei Xiao1( )
Department of Materials ScienceFudan University, 220 Handan RoadShanghai200433China
Department of Macromolecular ScienceFudan University, 220 Handan RoadShanghai200433China

Abstract

As the most promising alternative to traditional indium tin oxide (ITO), silver nanowire (AgNW) composite transparent electrodes with improved stabilities compared with that of the pristine AgNWs networks have been demonstrated in various devices. However, a stable AgNW/polymer composite as the bottom electrode for perovskite solar cells has not yet been reported. Here, a long-term stable, smooth AgNW composite with an antioxidant-modified chitosan polymer was developed. The modified polymer can effectively protect pristine AgNWs from side reactions with perovskite, whereas it does not block the carrier drift through the interface of the insulating polymer. The as-prepared AgNW/polymer composite electrode exhibited a root mean square roughness below 10 nm at a scan size of 50 μm × 50 μm, and its original sheet resistance did not change obviously after aging at 85 ℃ for 40 days in air. As a result, the perovskite solar cell employing the composite as the bottom electrode yielded a power conversion efficiency of 7.9%, which corresponds to nearly 75% of that of the reference device with an ITO electrode.

Keywords: stability, silver nanowire, perovskite solar cell, ascorbic-acid-modified chitosan, transparent composite electrode

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Publication history
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Acknowledgements

Publication history

Received: 10 March 2017
Revised: 19 August 2017
Accepted: 21 August 2017
Published: 19 March 2018
Issue date: April 2018

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany 2017

Acknowledgements

Acknowledgements

This study was sponsored by 59th China Postdoctoral Science Foundation (No. 2016M590318), Special Financial Grant from China Postdoctoral Science Foundation (No. 2017T100270), National Natural Science Foundation of China (Nos. 51603043 and 51673042), and the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning (No. TP2015002).

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