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- W2979356986 abstract "Abstract Charged defects at the surface of the organic–inorganic perovskite active layer are detrimental to solar cells due to exacerbated charge carrier recombination. Here we show that charged surface defects can be benign after passivation and further exploited for reconfiguration of interfacial energy band structure. Based on the electrostatic interaction between oppositely charged ions, Lewis-acid-featured fullerene skeleton after iodide ionization (PCBB-3N-3I) not only efficiently passivates positively charged surface defects but also assembles on top of the perovskite active layer with preferred orientation. Consequently, PCBB-3N-3I with a strong molecular electric dipole forms a dipole interlayer to reconfigure interfacial energy band structure, leading to enhanced built-in potential and charge collection. As a result, inverted structure planar heterojunction perovskite solar cells exhibit the promising power conversion efficiency of 21.1% and robust ambient stability. This work opens up a new window to boost perovskite solar cells via rational exploitation of charged defects beyond passivation." @default.
- W2979356986 created "2019-10-18" @default.
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- W2979356986 date "2019-10-09" @default.
- W2979356986 modified "2023-10-17" @default.
- W2979356986 title "Reconfiguration of interfacial energy band structure for high-performance inverted structure perovskite solar cells" @default.
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- W2979356986 doi "https://doi.org/10.1038/s41467-019-12613-8" @default.
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