Fully textured monolithic perovskite/silicon tandem solar cells with 25.2% power conversion efficiency
By Florent Sahli, J. Werner, Brett A. Kamino, M. Bräuninger, R. Monnard, B. Paviet‐Salomon, L. Barraud, L. Ding, Juan J. Diaz Leon, D. Sacchetto and 7 more. Nature Materials, 2018
1,191 citations recorded by the source corpus.
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.
Subfields: Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/7a66246acae882c7e1a7e78f1abd9c7a87c324b4
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In Electrical and Electronic Engineering
Citations in the corpus
- Grain Engineering for Perovskite/Silicon Monolithic Tandem Solar Cells with Efficiency of 25.4% (2019, neutral): “Lastly, the Jsc can also be increased by utilizing a silicon bottom cell with textured surfaces on both sides to reduce front-surface reflection losses, as demonstrated by Sahli et al.(15) It has been calculated that monolithic perovskite/silicon tandem devices can reach a matched Jsc as high as 20.”
- Blade-Coated Perovskites on Textured Silicon for 26%-Efficient Monolithic Perovskite/Silicon Tandem Solar Cells (2020, neutral): “Thermal evaporation, whether alone or in combination with other processing steps, has recently been reported as one approach to conformally coat perovskite absorbers on textured silicon.(25) A two-step process was reported by Sahli et al.”