期刊
SCIENCE
卷 354, 期 6309, 页码 206-209出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aah5557
关键词
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资金
- Marie Sklodowska Curie fellowship [665667]
- European Union's Seventh Framework Programme for research, technological development, and demonstration [291771]
- Swiss National Science Foundation - Umbrella project [407040-153952, 407040-153990, 200021-157135/1]
- NRP 70 Energy Turnaround
- 9th call proposal 906: CONNECT PV
- SNF-NanoTera
- Swiss Federal Office of Energy (SYNERGY)
- King Abdulaziz City for Science and Technology
- Swiss National Science Foundation (SNF) [407040_153990, 407040_153952] Funding Source: Swiss National Science Foundation (SNF)
All of the cations currently used in perovskite solar cells abide by the tolerance factor for incorporation into the lattice. We show that the small and oxidation-stable rubidium cation (Rb+) can be embedded into a cation cascade to create perovskite materials with excellent material properties. We achieved stabilized efficiencies of up to 21.6% (average value, 20.2%) on small areas (and a stabilized 19.0% on a cell 0.5 square centimeters in area) as well as an electroluminescence of 3.8%. The open-circuit voltage of 1.24 volts at a band gap of 1.63 electron volts leads to a loss in potential of 0.39 volts, versus 0.4 volts for commercial silicon cells. Polymer-coated cells maintained 95% of their initial performance at 85 degrees C for 500 hours under full illumination and maximum power point tracking.
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