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Title: | Perovskite-perovskite tandem photovoltaics with optimized band gaps | Authors: | 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 Slotcavage, Daniel J. Belisle, Rebecca A. Patel, Jay B. Parrott, Elizabeth S. Sutton, Rebecca J. Ma, Wen Moghadam, Farhad CONINGS, Bert BABAYIGIT, Aslihan BOYEN, Hans-Gerd Bent, Stacey Giustino, Feliciano Herz, Laura M. Johnston, Michael B. McGehee, Michael D. Snaith, Henry J. |
Issue Date: | 2016 | Publisher: | AMER ASSOC ADVANCEMENT SCIENCE | Source: | SCIENCE, 354(6314), p. 861-865 | Abstract: | We demonstrate four-and two-terminal perovskite-perovskite tandem solar cells with ideally matched band gaps. We develop an infrared-absorbing 1.2-electron volt band-gap perovskite, FA(0.75)Cs(0.25)Sn(0.5)Pb(0.5)I(3), that can deliver 14.8% efficiency. By combining this material with a wider-band gap FA(0.83)Cs(0.17)Pb(I0.5Br0.5)(3) 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. | Notes: | [Eperon, Giles E.; Green, Thomas; Wang, Jacob Tse-Wei; McMeekin, David P.; Milot, Rebecca L.; Patel, Jay B.; Parrott, Elizabeth S.; Sutton, Rebecca J.; Conings, Bert; Babayigit, Aslihan; Herz, Laura M.; Johnston, Michael B.; Snaith, Henry J.] Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England. [Eperon, Giles E.; May, Richard; McGehee, Michael D.] Univ Washington, Dept Chem, Seattle, WA 98195 USA. [Leijtens, Tomas; Bush, Kevin A.; Prasanna, Rohit; Slotcavage, Daniel J.; Belisle, Rebecca A.] Stanford Univ, Dept Mat Sci, Stanford, CA 94305 USA. [Volonakis, George; Giustino, Feliciano] Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England. [Palmstrom, Axel; Bent, Stacey] Stanford Univ, Dept Chem Engn, Via Ortega, Stanford, CA 94305 USA. [Ma, Wen; Moghadam, Farhad] SunPreme, Palomar Ave, Sunnyvale, CA USA. [Conings, Bert; Babayigit, Aslihan; Boyen, Hans-Gerd] Hasselt Univ, Inst Mat Res, Diepenbeek, Belgium. | Document URI: | http://hdl.handle.net/1942/23074 | ISSN: | 0036-8075 | e-ISSN: | 1095-9203 | DOI: | 10.1126/science.aaf9717 | ISI #: | 000388531900034 | Rights: | Copyright © 2016, American Association for the Advancement of Science | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2017 |
Appears in Collections: | Research publications |
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861.full.pdf Restricted Access | Published version | 772.15 kB | Adobe PDF | View/Open Request a copy |
FASnPbI3 paper_R2_v2_arxiv version.pdf | Peer-reviewed author version | 622.72 kB | Adobe PDF | View/Open |
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