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Fully textured monolithic perovskite/silicon tandem solar cells with 25.2% power conversion efficiency

Open access
Sahli, Florent, Werner, Jérémie, Kamino, Brett A., Bräuninger, Matthias, Monnard, Raphaël, Paviet-Salomon, Bertrand, Barraud, Loris, Ding, Laura, Diaz Leon, Juan J., Sacchetto, Davide, Cattaneo, Gianluca, Despeisse, Matthieu, Boccard, Mathieu, Nicolay, Sylvain, Jeangros, Quentin, Niesen, Bjoern, Ballif, Christophe·2018·Nature Materials

Abstract

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 devices have so far featured silicon bottom cells that are polished on their front side to be compatible with the perovskite fabrication process. This concession leads to higher potential production costs, higher reflection losses and non-ideal light trapping. To tackle this issue, we developed a top cell deposition process that achieves the conformal growth of multiple compounds with controlled optoelectronic properties directly on the micrometre-sized pyramids of textured monocrystalline silicon. Tandem devices featuring a silicon heterojunction cell and a nanocrystalline silicon recombination junction demonstrate a certified steady-state efficiency of 25.2%. Our optical design yields a current density of 19.5 mA cm−2 thanks to the silicon pyramidal texture and suggests a path for the realization of 30% monolithic perovskite/silicon tandem devices.An optimized two-step deposition process allows the formation of uniform layers of metal halide perovskites on textured silicon layers, enabling tandem silicon/perovskite solar cells with improved optical design and efficiency.

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Metadata

Authors
Sahli, F., Werner, J., Kamino, B. A., Bräuninger, M., Monnard, R., Paviet-Salomon, B., Barraud, L., Ding, L., Diaz Leon, J. J., Sacchetto, D., Cattaneo, G., Despeisse, M., Boccard, M., Nicolay, S., Jeangros, Q., Niesen, B., & Ballif, C.
Venue
Nature Materials
Published
2018-06-11
Volume
17
Issue
9
Pages
820-826
ISSN
  • 1476-1122 (ISSN-L)
  • 1476-4660
OpenAlex
W2805341314
Cited by
1,380
References
34
FWCI
68.40
Type
journal article
Language
en
Open access
green

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The paper
Sahli, F., Werner, J., Kamino, B. A., Bräuninger, M., Monnard, R., Paviet-Salomon, B., Barraud, L., Ding, L., Diaz Leon, J. J., Sacchetto, D., Cattaneo, G., Despeisse, M., Boccard, M., Nicolay, S., Jeangros, Q., Niesen, B., & Ballif, C. (2018). Fully textured monolithic perovskite/silicon tandem solar cells with 25.2% power conversion efficiency. Nature Materials. https://doi.org/10.1038/s41563-018-0115-4

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.