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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
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DOI (Published version): 10.1126/science.aba1628
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...
Published in: | Science |
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ISSN: | 0036-8075 1095-9203 |
Published: |
2020
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Online Access: |
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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. |
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College: |
College of Engineering |
Issue: |
6499 |
Start Page: |
96 |
End Page: |
102 |