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- W4360943670 abstract "Solution-processed perovskite light-emitting diodes (PeLEDs) show great potential for low-cost fabrication of large-area display panel, however, large crystallinity and poor film coverage generally cause high operating voltage and low luminescence efficiency in all solution-processed PeLEDs, and thus limiting their commercial applications. Here, the phenylpropylammonium bromide (PPABr) as ligand additive in MAPbBr3 for improving perovskite film quality and the device performance of PeLEDs are reported. With varying additive ratios of PPABr, the morphological changes and photoluminescence properties of perovskite film were investigated. Benefiting from precisely managing the ratio, the PPABr-based perovskite films exhibited well-defined crystal phase and high photoluminescence intensity. As a result, all solution-processed MAPbBr3 PeLEDs with the optimized concentration of PPABr showed a low turn-on voltage of 2.2 V and a maximum device luminance of 13,666 cd/m2, which are comparable to the non-additive device (with turn-on voltage and luminance of 3.0 V and 2910 cd/m2). Notably, an approximately 5.5-fold improvement for 0.09 mol PPABr-based device in current efficiency was achieved compared to the pristine MAPbBr3 PeLED." @default.
- W4360943670 created "2023-03-26" @default.
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- W4360943670 date "2023-06-01" @default.
- W4360943670 modified "2023-09-26" @default.
- W4360943670 title "Enhanced performance of all solution-processed perovskite light-emitting diodes using phenylpropylammonium bromide-additive assistant strategy" @default.
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- W4360943670 doi "https://doi.org/10.1016/j.jlumin.2023.119827" @default.
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