27.9% Efficient Monolithic Perovskite/Silicon Tandem Solar Cells on Industry Compatible Bottom Cells
- Köhnen, Eike
- Wagner, Philipp
- Lang, Felix
- Cruz, Alexandros
- Li, Bor
- Roß, Marcel
- Jošt, Marko
- Morales-Vilches, Anna B.
- Topič, Marko
- Stolterfoht, Martin
- Neher, Dieter
- Korte, Lars
- Rech, Bernd
- Schlatmann, Rutger
- Stannowski, Bernd
- Albrecht, Steve
DOIAbstract
Monolithic perovskite/silicon tandem solar cells recently surpass the efficiency of silicon single‐junction solar cells. Most tandem cells utilize >250 μm thick, planarized float‐zone (FZ) silicon, which is not compatible with commercial production using <200 μm thick Czochralski (CZ) silicon. The perovskite/silicon tandem cells based on industrially relevant 100 μm thick CZ‐silicon without mechanical planarization are demonstrated. The best power conversion efficiency (PCE) of 27.9% is only marginally below the 28.2% reference value obtained on the commonly used front‐side polished FZ‐Si, which are about three times thicker. With both wafer types showing the same median PCE of 27.8%, the thin CZ‐Si‐based devices are preferred for economic ...
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