Ultrahydrophobic 3D/2D fluoroarene bilayer-based water-resistant perovskite solar cells with efficiencies exceeding 22%

Yuhang Liu; Seckin Akin; Linfeng Pan; Ryusuke Uchida; Neha Arora; Jovana V. Milić; Alexander Hinderhofer; Frank Schreiber; Alexander R. Uhl; Shaik M. Zakeeruddin; Anders Hagfeldt; M. Ibrahim Dar; Michael Grätzel

doi:10.1126/sciadv.aaw2543

Ultrahydrophobic 3D/2D fluoroarene bilayer-based water-resistant perovskite solar cells with efficiencies exceeding 22%

Yuhang Liu
, Seckin Akin
, Linfeng Pan
, Ryusuke Uchida
, Neha Arora
, Jovana V. Milić
, Alexander Hinderhofer
, Frank Schreiber
, Alexander R. Uhl
, Shaik M. Zakeeruddin
, Anders Hagfeldt
, M. Ibrahim Dar
, Michael Grätzel

Swiss Federal Institute of Technology Lausanne
Karamanoglu Mehmetbey University
Panasonic Holdings Corporation
University of Tübingen
University of British Columbia

科研成果: 期刊稿件 › 文章 › 同行评审

676 引用（Scopus）

摘要

Preventing the degradation of metal perovskite solar cells (PSCs) by humid air poses a substantial challenge for their future deployment. We introduce here a two-dimensional (2D) A₂PbI₄ perovskite layer using pentafluoro-phenylethylammonium (FEA) as a fluoroarene cation inserted between the 3D light-harvesting perovskite film and the hole-transporting material (HTM). The perfluorinated benzene moiety confers an ultrahydrophobic character to the spacer layer, protecting the perovskite light-harvesting material from ambient moisture while mitigating ionic diffusion in the device. Unsealed 3D/2D PSCs retain 90% of their efficiency during photovoltaic operation for 1000 hours in humid air under simulated sunlight. Remarkably, the 2D layer also enhances interfacial hole extraction, suppressing nonradiative carrier recombination and enabling a power conversion efficiency (PCE) >22%, the highest reported for 3D/2D architectures. Our new approach provides water- and heat-resistant operationally stable PSCs with a record-level PCE.

源语言	英语
文章编号	aaw2543
期刊	Science Advances
卷	5
期	6
DOI	https://doi.org/10.1126/sciadv.aaw2543
出版状态	已出版 - 2019
已对外发布	是

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可持续发展目标 7 经济适用的清洁能源

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10.1126/sciadv.aaw2543

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Liu, Y., Akin, S., Pan, L., Uchida, R., Arora, N., Milić, J. V., Hinderhofer, A., Schreiber, F., Uhl, A. R., Zakeeruddin, S. M., Hagfeldt, A., Ibrahim Dar, M., & Grätzel, M. (2019). Ultrahydrophobic 3D/2D fluoroarene bilayer-based water-resistant perovskite solar cells with efficiencies exceeding 22%. Science Advances, 5(6), 文章 aaw2543. https://doi.org/10.1126/sciadv.aaw2543

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title = "Ultrahydrophobic 3D/2D fluoroarene bilayer-based water-resistant perovskite solar cells with efficiencies exceeding 22\%",

abstract = "Preventing the degradation of metal perovskite solar cells (PSCs) by humid air poses a substantial challenge for their future deployment. We introduce here a two-dimensional (2D) A2PbI4 perovskite layer using pentafluoro-phenylethylammonium (FEA) as a fluoroarene cation inserted between the 3D light-harvesting perovskite film and the hole-transporting material (HTM). The perfluorinated benzene moiety confers an ultrahydrophobic character to the spacer layer, protecting the perovskite light-harvesting material from ambient moisture while mitigating ionic diffusion in the device. Unsealed 3D/2D PSCs retain 90\% of their efficiency during photovoltaic operation for 1000 hours in humid air under simulated sunlight. Remarkably, the 2D layer also enhances interfacial hole extraction, suppressing nonradiative carrier recombination and enabling a power conversion efficiency (PCE) >22\%, the highest reported for 3D/2D architectures. Our new approach provides water- and heat-resistant operationally stable PSCs with a record-level PCE.",

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AU - Arora, Neha

AU - Milić, Jovana V.

AU - Hinderhofer, Alexander

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AU - Zakeeruddin, Shaik M.

AU - Hagfeldt, Anders

AU - Ibrahim Dar, M.

AU - Grätzel, Michael

N1 - Publisher Copyright: © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

PY - 2019

Y1 - 2019

N2 - Preventing the degradation of metal perovskite solar cells (PSCs) by humid air poses a substantial challenge for their future deployment. We introduce here a two-dimensional (2D) A2PbI4 perovskite layer using pentafluoro-phenylethylammonium (FEA) as a fluoroarene cation inserted between the 3D light-harvesting perovskite film and the hole-transporting material (HTM). The perfluorinated benzene moiety confers an ultrahydrophobic character to the spacer layer, protecting the perovskite light-harvesting material from ambient moisture while mitigating ionic diffusion in the device. Unsealed 3D/2D PSCs retain 90% of their efficiency during photovoltaic operation for 1000 hours in humid air under simulated sunlight. Remarkably, the 2D layer also enhances interfacial hole extraction, suppressing nonradiative carrier recombination and enabling a power conversion efficiency (PCE) >22%, the highest reported for 3D/2D architectures. Our new approach provides water- and heat-resistant operationally stable PSCs with a record-level PCE.

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Ultrahydrophobic 3D/2D fluoroarene bilayer-based water-resistant perovskite solar cells with efficiencies exceeding 22%

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