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Nano Research 2017, 10(3): 1092-1103 https://doi.org/10.1007/s12274-016-1407-0
Research Article | Issue | Published: 22 December 2016

Interface engineering of high efficiency perovskite solar cells based on ZnO nanorods using atomic layer deposition

Show Author's Information Shibin Li1( ),  Peng Zhang1,  Yafei Wang1,  Hojjatollah Sarvari2,  Detao Liu1,  Jiang Wu3,  Yajie Yang1,  Zhiming Wang4,  Zhi David Chen1,2( )
School of Optoelectronic InformationUniversity of Electronic Science and Technology of ChinaChengdu610054China
Department of Electrical & Computer Engineering and Center for Nanoscale Science & EngineeringUniversity of Kentucky, LexingtonKentucky40506USA
Department of Electronic and Electrical EngineeringUniversity College London, Torrington PlaceLondonWC1E 7JEUK
Institute of Fundamental and Frontier SciencesUniversity of Electronic Science and Technology of ChinaChengdu610054China
Keywords:
oxygen vacancy, perovskite solar cell, ZnO nanorods, Al2O3 monolayer, charge recombination
Cite this article:
Li S, Zhang P, Wang Y, et al. Interface engineering of high efficiency perovskite solar cells based on ZnO nanorods using atomic layer deposition. Nano Research, 2017, 10(3): 1092-1103. https://doi.org/10.1007/s12274-016-1407-0
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Abstract Full text Electronic supplementary material About this article

Despite the considerably improved efficiency of inorganic-organic metal hybrid perovskite solar cells (PSCs), electron transport is still a challenging issue. In this paper, we report the use of ZnO nanorods prepared by hydrothermal self- assembly as the electron transport layer in perovskite solar cells. The efficiency of the perovskite solar cells is significantly enhanced by passivating the interfacial defects via atomic layer deposition of Al2O3 monolayers on the ZnO nanorods. By employing the Al2O3 monolayers, the average power conversion efficiency of methylammonium lead iodide PSCs was increased from 10.33% to 15.06%, and the highest efficiency obtained was 16.08%. We suggest that the passivation of defects using the atomic layer deposition of monolayers might provide a new pathway for the improvement of all types of PSCs..


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Electronic supplementary material
About this article

Interface engineering of high efficiency perovskite solar cells based on ZnO nanorods using atomic layer deposition

Show Author's information Shibin Li1( ), Peng Zhang1, Yafei Wang1, Hojjatollah Sarvari2, Detao Liu1, Jiang Wu3, Yajie Yang1, Zhiming Wang4, Zhi David Chen1,2( )
School of Optoelectronic InformationUniversity of Electronic Science and Technology of ChinaChengdu610054China
Department of Electrical & Computer Engineering and Center for Nanoscale Science & EngineeringUniversity of Kentucky, LexingtonKentucky40506USA
Department of Electronic and Electrical EngineeringUniversity College London, Torrington PlaceLondonWC1E 7JEUK
Institute of Fundamental and Frontier SciencesUniversity of Electronic Science and Technology of ChinaChengdu610054China

Abstract

Despite the considerably improved efficiency of inorganic-organic metal hybrid perovskite solar cells (PSCs), electron transport is still a challenging issue. In this paper, we report the use of ZnO nanorods prepared by hydrothermal self- assembly as the electron transport layer in perovskite solar cells. The efficiency of the perovskite solar cells is significantly enhanced by passivating the interfacial defects via atomic layer deposition of Al2O3 monolayers on the ZnO nanorods. By employing the Al2O3 monolayers, the average power conversion efficiency of methylammonium lead iodide PSCs was increased from 10.33% to 15.06%, and the highest efficiency obtained was 16.08%. We suggest that the passivation of defects using the atomic layer deposition of monolayers might provide a new pathway for the improvement of all types of PSCs..

Keywords: oxygen vacancy, perovskite solar cell, ZnO nanorods, Al2O3 monolayer, charge recombination

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Publication history
Copyright
Acknowledgements

Publication history

Received: 10 August 2016
Revised: 28 November 2016
Accepted: 03 December 2016
Published: 22 December 2016
Issue date: March 2017

Copyright

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2016

Acknowledgements

Acknowledgements

This work was supported by National Natural Science Foundation of China (Nos. 61474016, 61405026, 61371046, 61421002, 6157031208, and 61471085), and National Higher-education Institution General Research and Development Fund (No. ZYGX2014J044), Projects of International Cooperation of Sichuan Province (No. 2014HH0041). University of Kentucky also partially supported this work.

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