Browsing CSEM Archive by Author "Sahli, F."
Now showing items 1-12 of 12
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25.1%-Efficient Monolithic Perovskite/Silicon Tandem Solar Cell Based on a p-type Monocrystalline Textured Silicon Wafer and High-Temperature Passivating Contacts
Nogay, G.; Sahli, F.; Werner, J.; Monnard, R.; Boccard, M.; Despeisse, M.; et al. (2019)A monolithic two-terminal perovskite/silicon tandem solar cell based on an industrial, high-temperature tolerant p-type crystalline silicon bottom cell with a steady-state power conversion efficiency of 25.1% is demonstrated. -
Complex Refractive Indices of Cesium-Formamidinium-Based Mixed-Halide Perovskites with Optical Band Gaps from 1.5 to 1.8 eV
Werner, J.; Nogay, G.; Sahli, F.; Yang, T. C. J.; Brauninger, M.; Christmann, G.; et al. (2018)Cesium-formamidinium-based mixed-halide perovskite materials with optical band gaps ranging from 1.5 to 1.8 eV are investigated by variable-angle spectroscopic ellipsometry. The determined complex refractive indices are ... -
Efficient Near-Infrared-Transparent Perovskite Solar Cells Enabling Direct Comparison of 4-Terminal and Monolithic Perovskite/Silicon Tandem Cells
Werner, J.; Barraud, L.; Walter, A.; Brauninger, M.; Sahli, F.; Sacchetto, D.; et al. (2016)Combining market-proven silicon solar cell technology with an efficient wide band gap top cell into a tandem device is an attractive approach to reduce the cost of photovoltaic systems. For this, perovskite solar cells are ... -
Fully textured monolithic perovskite/silicon tandem solar cells with 25.2% power conversion efficiency
Sahli, F.; Werner, J.; Kamino, B. A.; Brauninger, M.; Monnard, R.; Paviet-Salomon, B.; et al. (2018)Tandem devices combining perovskite and silicon solar cells are promising candidates to achieve power conversion efficiencies above 30% at reasonable costs. State-of-the-art monolithic two-terminal perovskite/silicon tandem ... -
Hybrid sequential deposition process for fully textured perovskite/silicon tandem solar cells
Sahli, F.; Werner, J.; Kamino, B. A.; Brauninger, M.; Yang, T. C. J.; Fiala, P.; et al. (2018)Tandem solar cells that feature a high-bandgap perovskite cell on top of a lower bandgap silicon cell have the potential to reach efficiencies > 30%. Here, we present a versatile hybrid deposition method that yields conformal ... -
Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction
Sahli, F.; Kamino, B. A.; Werner, J.; Brauninger, M.; Paviet-Salomon, B.; Barraud, L.; et al. (2018)Perovskite/silicon tandem solar cells are increasingly recognized as promising candidates for next-generation photovoltaics with performance beyond the single-junction limit at potentially low production costs. Current ... -
Instability of p-i-n perovskite solar cells under reverse bias
Razera, R.A.Z.; Jacobs, D. A.; Fu, F.; Fiala, P.; Dussouillez, M.; Sahli, F.; Yang, T.C.J.; Ding, L.; Walter, A.; Feil, A. F.; Boudinov, H. I.; Nicolay, S.; Ballif, C.; Jeangros, Q. (2020-01)Partial shading can trigger permanent damage in photovoltaic modules because the illuminated solar cells drive the shaded cells into reverse bias. Under reverse bias conditions, perovskite solar cells have been shown to ... -
Light Management: A Key Concept in High-Efficiency Perovskite/Silicon Tandem Photovoltaics
Jacobs, D. A.; Langenhorst, M.; Sahli, F.; Richards, B. S.; White, T. P.; Ballif, C.; et al. (2019)The remarkable recent progress in perovskite photovoltaics affords a novel opportunity to advance the power conversion efficiency of market-dominating crystalline silicon (c-Si) solar cells. A severe limiting factor in the ... -
Perovskite/Perovskite/Silicon Monolithic Triple-Junction Solar Cells with a Fully Textured Design
Werner, J.; Sahli, F.; Fu, F.; Leon, J. J. D.; Walter, A.; Kamino, B. A.; et al. (2018)High efficiency triple-junction solar cells are currently made of III-IV semiconductors using expensive deposition methods. Perovskite/perovskite/silicon monolithic triple-junction solar cells could be a lower-cost alternative ... -
Perovskite/Silicon Tandem Solar Cells: Challenges Towards HighEfficiency in 4-Terminal and Monolithic Devices
Werner, J.; Sahli, F.; Kamino, B.; Sacchetto, D.; Brauninger, M.; Walter, A.; et al. (2017)Perovskite and silicon solar cells have recently been shown to be perfect partners for tandem devices with potentially very high efficiency at low additional costs over standard silicon cells. Here, we present the development ... -
Probing Photocurrent Nonuniformities in the Subcells of Monolithic Perovskite/Silicon Tandem Solar Cells
Song, Z. N.; Werner, J.; Shrestha, N.; Sahli, F.; De Wolf, S.; Niesen, B.; et al. (2016)Perovskite/silicon tandem solar cells with high power conversion efficiencies have the potential to become a commercially viable photovoltaic option in the near future. However, device design and optimization is challenging ... -
Vapor deposition of metal halide perovskite thin films: Process control strategies to shape layer properties
Guesnay, Q.; Sahli, F.; Ballif, C.; Jeangros, Q. (2021-10)