Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 11, Issue 6, Pages 1489-1498Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ee00237a
Keywords
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Funding
- European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant [657270]
- Helmholtz Association
- Helmholtz Young Investigator Group of Dr U.W. Paetzold
- PEROSEED project
- Helmholtz Energy Materials Foundry (HEMF)
- Science and Technology of Nanostructures research program
- Karlsruhe School of Optics and Photonics
- Solliance
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Perovskite-silicon tandem solar cells are potentially attractive, inexpensive solutions to surpass the power conversion efficiency limits of market-leading silicon solar cells. While such tandem solar cells have been demonstrated to reach high efficiencies, they require advanced light management to utilise the solar spectrum efficiently. Moreover, area upscaling with minimal optical losses is necessary to transfer the properties of lab scale devices to commercial scale products. Here, we demonstrate four-terminal perovskite-silicon tandem solar modules with efficient light management. With rigorous optical simulations of the complete tandem stack, we design light management concepts that minimise overall reflection and enhance complementary absorption of the subcells. The optical optimisation results in four-terminal tandem power conversion efficiencies of 25.3% on 0.13 cm(2) and 23.9% on 4 cm(2), both exceeding the stand-alone silicon solar cell power conversion efficiency of 23.0%.
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