Perovskite-perovskite tandem photovoltaics with optimized band gaps

Eperon, Giles E.; Leijtens, Tomas; Bush, Kevin A.; Prasanna, Rohit; Green, Thomas; Wang, Jacob Tse‐Wei; McMeekin, David P.; Volonakis, George; Milot, Rebecca L.; May, Richard; Palmstrom, Axel F.; Slotcavage, Daniel J.; Belisle, Rebecca A.; Patel, Jay B.; Parrott, Elizabeth S.; Sutton, Rebecca J.; Ma, Wen; Moghadam, Farhad; Conings, Bert; Babayigit, Aslihan; Boyen, H.‐G.; Bent, Stacey F.; Giustino, Feliciano; Herz, Laura M.; Johnston, Michael B.; McGehee, Michael D.; Snaith, Henry J.

doi:10.1126/science.aaf9717

articleScienceOct 21, 2016GREEN OA

Perovskite-perovskite tandem photovoltaics with optimized band gaps

GEGiles E. Eperon TLTomas Leijtens KAKevin A. Bush RPRohit Prasanna TGThomas Green

University of Washington · University of Oxford · +2 more institutions

PubMed

Indexed inarxivcrossrefpubmed

Abstract

Material, we achieve monolithic two-terminal tandem efficiencies of 17.0% with >1.65-volt open-circuit voltage. We also make mechanically stacked four-terminal tandem cells and obtain 20.3% efficiency. Notably, we find that our infrared-absorbing perovskite cells exhibit excellent thermal and atmospheric stability, not previously achieved for Sn-based perovskites. This device architecture and materials set will enable "all-perovskite" thin-film solar cells to reach the highest efficiencies in the long term at the lowest costs.

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Topics & keywords

Topics

Keywords

Tandem
Perovskite (structure)
Photovoltaics
Materials science
Fabrication
Optoelectronics
Layer (electronics)
Perovskite solar cell

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