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- W2979456871 abstract "The traditional hot injection (HI) process needs high temperature, inert gas protection, and localized injection operation, which severely hinder their large-scale industrialization. Moreover, the CsPb1-xSnxBr3 HI-QDs exhibit poor stability. Herein, we report the room-temperature (RT) synthesis of CsPb1-xSnxBr3 perovskite QDs by modified ligand-assisted reprecipitation (LARP) approach. Compared with the CsPb1-xSnxBr3 HI-QDs reported in literatures, the CsPb1-xSnxBr3 RT-QDs show higher photoluminescence quantum yield (PLQY) and better stability: the CsPb0.9Sn0.1Br3 RT-QDs obtain the highest PLQY of more than 91%, and the stability of the film made with this QDs still maintain more than 80% of its original fluorescence strength after 120 days in air environment. Because of the superior PLQY, light-emitting diodes (LEDs) based on the RT-QDs is constructed, and it exhibits an external quantum efficiency (EQE) of 1.8%, a luminance of 1600 cdm-2, a current efficiency of 4.89 cdA-1, a power efficiency of 6.41 lmw−1, and a low on-voltage of 3.6 V. The present work provides a feasible method for large-scale industrial synthesis of perovskite QDs at room temperature and shows that the CsPb1-xSnxBr3 RT-QDs are promising for highly efficient LEDs." @default.
- W2979456871 created "2019-10-18" @default.
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- W2979456871 date "2020-01-01" @default.
- W2979456871 modified "2023-10-16" @default.
- W2979456871 title "Room-temperature synthesis of excellent-performance CsPb1-Sn Br3 perovskite quantum dots and application in light emitting diodes" @default.
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- W2979456871 doi "https://doi.org/10.1016/j.matdes.2019.108246" @default.
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