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- W3048791859 abstract "Halide CsPbX3 perovskites, superior photovoltaic materials with great thermal endurance, are of tremendous passion for tunable bandgaps and gratifying applications in colored-light-emitting diodes (LEDs) and tandem solar cells (TSCs). Nevertheless, the inferior moisture tolerance for cubic (α)-phase perovskite is still a huge obstacle for sustaining output of CsPbX3-based perovskite solar cells (PSCs) under ambient pressure. For the representative CsPbIBr2 perovskite, the solution-derived film, enduring the disappointing quality for the existing voids and pinholes, severely limits its device performance and long-time outputs. Herein, we introduced a perovskite surface modification method, overspreading anion-exchanged CsPbIBr2 alloy quantum dots (QDs) over the bulk materials, to protect interior CsPbIBr2 perovskites by moisture isolation. As a reward, this attempt can help the thin perovskite films and associated devices against the ambient environments to achieve a superior stability, as well as a gratifying efficiency improvement of ~12% (8.16% vs. 7.31%) due to the defect passivation. Particularly, the QDs-modified perovskite films can still remain ~78% absorption after a two-stage storage of low humidity (~36%) and high humidity (~80%), comparing with a complete phase transformation (α → β) of the conventional films." @default.
- W3048791859 created "2020-08-18" @default.
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- W3048791859 date "2020-11-01" @default.
- W3048791859 modified "2023-10-18" @default.
- W3048791859 title "Quantum dot-modified CsPbIBr2 perovskite absorber for efficient and stable photovoltaics" @default.
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- W3048791859 doi "https://doi.org/10.1016/j.orgel.2020.105917" @default.
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