Water- and heat-activated dynamic passivation for perovskite photovoltaics

Wei-Ting Wang; Philippe Holzhey; Ning Zhou; Qiang Zhang; Suer Zhou; Elisabeth A. Duijnstee; Kevin J. Rietwyk; Jeng-Yu Lin; Yijie Mu; Yanfeng Zhang; Udo Bach; Chun-Guey Wu; Hin‐Lap Yip; Henry J. Snaith; Shien-Ping Feng

doi:10.1038/s41586-024-07705-5

Water- and heat-activated dynamic passivation for perovskite photovoltaics

Wei-Ting Wang (Co-first Author), Philippe Holzhey (Co-first Author), Ning Zhou (Co-first Author), Qiang Zhang (Co-first Author), Suer Zhou, Elisabeth A. Duijnstee, Kevin J. Rietwyk, Jeng-Yu Lin, Yijie Mu, Yanfeng Zhang, Udo Bach, Chun-Guey Wu, Hin‐Lap Yip, Henry J. Snaith^*, Shien-Ping Feng^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Abstract

Further improvements in perovskite solar cells require better control of ionic defects in the perovskite photoactive layer during the manufacturing stage and their usage^1–5 . Here we report a living passivation strategy using a hindered urea/thiocarbamate bond^6–8 Lewis acid–base material (HUBLA), where dynamic covalent bonds with water and heat-activated characteristics can dynamically heal the perovskite to ensure device performance and stability. Upon exposure to moisture or heat, HUBLA generates new agents and further passivates defects in the perovskite. This passivation strategy achieved high-performance devices with a power conversion efficiency (PCE) of 25.1 per cent. HUBLA devices retained 94 per cent of their initial PCE for approximately 1,500 hours of ageing at 85 degrees Celsius in nitrogen and maintained 88 per cent of their initial PCE after 1,000 hours of ageing at 85 degrees Celsius and 30 per cent relative humidity in air. © The Author(s) 2024.

Original language	English
Pages (from-to)	294-300
Journal	Nature
Volume	632
Issue number	8024
Online published	24 Jun 2024
DOIs	https://doi.org/10.1038/s41586-024-07705-5
Publication status	Published - 8 Aug 2024

Funding

S.-P.F. acknowledges support from the General Research Fund (11204223) and the Collaborative Research Fund (C7018-20G and C7082-21G) from the Research Grants Council of Hong Kong Special Administrative Region, China. S.-P.F. also acknowledges support from the start-up grant of the City University of Hong Kong (9380143). P.H. acknowledges support from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement number 764787. S.Z. acknowledges funding from the Rank Prize Funds and the PeroCUBE Project, European Union's Horizon 2020 research and innovation programme under grant agreement number 861985 (PEROCUBE). H.-L.Y. acknowledges support from the MRP Grant (MRP/040/21X) from the Innovation and Technology Commission of Hong Kong, and the Green Tech Fund (202020164) from the Environment and Ecology Bureau of Hong Kong. E.A.D. acknowledges the Engineering and Physical Science Council (EPSRC) for funding via the Centre for Doctoral Training in New and Sustainable Photovoltaics. This work was financially supported by the Australian Centre for Advanced Photovoltaics (ACAP), the Australian Renewable Energy Agency (ARENA), and the Australian Research Council (ARC) Centre of Excellence in Exciton Science (CE170100026). H.J.S. acknowledges funding from the EPSRC (grant number EP/S004947/1). We thank the Advanced Laboratory of Accommodation and Research for Organic Photovoltaics, Ministry of Science and Technology (MOST), Taiwan, for conducting the mass spectrometry (electrospray ionization mass spectrometry) measurements; the Instrumental Analysis Center of Xi’an Jiaotong University and the Fujian Metrology Institute for their assistance with the XPS data analysis and device testing, respectively; and Shenzhen HUASUAN Technology Co., Ltd for performing the theoretical calculations. We also thank A. B. Djurišić from the Department of Physics at The University of Hong Kong, and C.-H. Chiang from the Department of Chemistry at National Central University, for their provision of the encapsulation materials.

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AU - Rietwyk, Kevin J.

AU - Lin, Jeng-Yu

AU - Mu, Yijie

AU - Zhang, Yanfeng

AU - Bach, Udo

AU - Wu, Chun-Guey

AU - Yip, Hin‐Lap

AU - Snaith, Henry J.

AU - Feng, Shien-Ping

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Water- and heat-activated dynamic passivation for perovskite photovoltaics

Abstract

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GRF: Living Passivation Strategy to Improve the Operational Stability of Perovskite Solar Cell

CRF-ExtU-Lead: Active Fluid for Enhanced Thermal Transport and Energy Harvesting

GTF_EPD: Development of Printable Perovskite Solar Cells for Transformative Clean Energy and Sustainable Society

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Water- and heat-activated dynamic passivation for perovskite photovoltaics

Abstract

Funding

Publisher's Copyright Statement

UN SDGs

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GRF: Living Passivation Strategy to Improve the Operational Stability of Perovskite Solar Cell

CRF-ExtU-Lead: Active Fluid for Enhanced Thermal Transport and Energy Harvesting

GTF_EPD: Development of Printable Perovskite Solar Cells for Transformative Clean Energy and Sustainable Society

Cite this