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- W2945595550 abstract "All-inorganic perovskites are attracting increasing attention due to their superior thermal stability than that of the traditional CH3NH3PbI3, while their inferior phase stability in ambient conditions is still an unsolved issue. Here, for the first time, we report the incorporation of niobium (Nb5+) ions into the CsPbI2Br perovskite. Results indicate that Nb5+ can effectively stabilize the photoactive α-CsPbI2Br phase by the possible substitution of Pb2+. With 0.5% Nb doping, the carbon electrode-based all-inorganic perovskite solar cells achieved a high photoconversion efficiency value of 10.42%, 15% higher than that of the control device. The Nb5+ incorporation reduces the charge recombination in the perovskite, leading to a champion Voc value of 1.27 V and a negligible hysteresis effect. This work explicates the high compatibility of all-inorganic perovskite materials and unlocks the opportunities for the use of high-valence ions for perovskite property modification." @default.
- W2945595550 created "2019-05-29" @default.
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- W2945595550 date "2019-05-14" @default.
- W2945595550 modified "2023-09-25" @default.
- W2945595550 title "Niobium Incorporation into CsPbI<sub>2</sub>Br for Stable and Efficient All-Inorganic Perovskite Solar Cells" @default.
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- W2945595550 doi "https://doi.org/10.1021/acsami.9b03622" @default.
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