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- W4384563216 abstract "Polymer has been widely used for modifications in perovskite films. However, its comprehensive and complex mechanism is still lack of in-depth research. This work presents the possible mechanism for crystal growth in perovskite films under passivation circumstance. Through the crystallization and carrier dynamics analysis we establish an island-crystal growth model with low concentration precursor solution, it predicts that the curve of additive weight ratio versus film performance will reach a peak value and then decline to a mediocre level. We further set several experiment groups and test this hypothesis with a series of characterizations. For the optoelectronic performance, passivation enhances the photosensitivity (Ilight/Idark) to ~1020%. The aging test under an elevated relative humidity (85%) demonstrates the passivated devices extend the lifetime to 96 h, which is 3 times higher than the reference group. In addition, the encapsulated group shows a really stable performance in 240 h storage, indicating polymer passivation has a great potential for suppressing ion migration effect in the perovskite material." @default.
- W4384563216 created "2023-07-18" @default.
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- W4384563216 date "2023-11-01" @default.
- W4384563216 modified "2023-09-25" @default.
- W4384563216 title "A study for polymer-based passivation mechanism: insights of island-growth crystallization and carrier dynamic in perovskite films" @default.
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- W4384563216 doi "https://doi.org/10.1016/j.jallcom.2023.171423" @default.
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