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- W3127629175 abstract "Alkali addition in organic–inorganic perovskite has become the standard recipe for achieving solar cells with efficiencies exceeding 20%, but the mechanism is not well understood. We use non-contact carrier lifetime measurements, mobility measurements, and synchrotron-based x-ray characterization techniques to show that there is a unique benefit to adding hybrid perovskite samples with Rb and Cs simultaneously. When either Rb or Cs is added, charge carrier mobility increases with alkali concentration. Charge carrier lifetime benefits from alkali incorporation as well, but is optimized with only moderate concentration at 1%. When both Rb and Cs are introduced, however, the high mobility is maintained and the charge carrier lifetime increases considerably. Our results show that when incorporated alone, Rb and Cs have very similar roles in a perovskite crystal, but when co-added, halide distribution becomes homogenized correlating with improved charge transport properties." @default.
- W3127629175 created "2021-02-15" @default.
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- W3127629175 date "2021-02-08" @default.
- W3127629175 modified "2023-10-17" @default.
- W3127629175 title "Enhanced charge carrier lifetime and mobility as a result of Rb and Cs incorporation in hybrid perovskite" @default.
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- W3127629175 doi "https://doi.org/10.1063/5.0030206" @default.
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