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A piperidinium salt stabilizes efficient metal-halide perovskite solar cells / Yen-Hung Lin, Nobuya Sakai, Peimei Da, Jiaying Wu, Harry C. Sansom, Alexandra J. Ramadan, Suhas Mahesh, Junliang Liu, Robert D. J. Oliver, Jongchul Lim, Lee Aspitarte, Kshama Sharma, P. K. Madhu, Anna B. Morales‐Vilches, Pabitra K. Nayak, Sai Bai, Feng Gao, Chris R. M. Grovenor, Michael B. Johnston, John G. Labram, James Durrant, James M. Ball, Bernard Wenger, Bernd Stannowski, Henry J. Snaith

Science, Volume: 369, Issue: 6499, Pages: 96 - 102

Swansea University Author: James Durrant

Abstract

Longevity has been a long-standing concern for hybrid perovskite photovoltaics. We demonstrate high-resilience positive-intrinsic-negative perovskite solar cells by incorporating a piperidinium-based ionic compound into the formamidinium-cesium lead-trihalide perovskite absorber. With the bandgap tu...

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Published in: Science
ISSN: 0036-8075 1095-9203
Published: 2020
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa54855
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Abstract: Longevity has been a long-standing concern for hybrid perovskite photovoltaics. We demonstrate high-resilience positive-intrinsic-negative perovskite solar cells by incorporating a piperidinium-based ionic compound into the formamidinium-cesium lead-trihalide perovskite absorber. With the bandgap tuned to be well suited for perovskite-on-silicon tandem cells, this piperidinium additive enhances the open-circuit voltage and cell efficiency. This additive also retards compositional segregation into impurity phases and pinhole formation in the perovskite absorber layer during aggressive aging. Under full-spectrum simulated sunlight in ambient atmosphere, our unencapsulated and encapsulated cells retain 80 and 95% of their peak and post-burn-in efficiencies for 1010 and 1200 hours at 60° and 85°C, respectively. Our analysis reveals detailed degradation routes that contribute to the failure of aged cells.
College: College of Engineering
Issue: 6499
Start Page: 96
End Page: 102