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A piperidinium salt stabilizes efficient metal-halide perovskite solar cells.
- Source :
-
Science . 7/3/2020, Vol. 369 Issue 6499, p96-102. 7p. 3 Color Photographs, 1 Graph. - Publication Year :
- 2020
-
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. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PEROVSKITE
*PHOTOVOLTAIC power generation
*SOLAR cells
*ATMOSPHERE
*BAND gaps
Subjects
Details
- Language :
- English
- ISSN :
- 00368075
- Volume :
- 369
- Issue :
- 6499
- Database :
- Academic Search Index
- Journal :
- Science
- Publication Type :
- Academic Journal
- Accession number :
- 144380569
- Full Text :
- https://doi.org/10.1126/science.aba1628