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- W4280491021 abstract "B-site doping is an emerging strategy for tuning the emission wavelength of cesium lead halide ABX3 nanocrystals. We present a simple method for the postsynthetic doping of CsPbBr3 nanocrystals with aluminum at room temperature by exposing them to a solution of AlBr3 in dibromomethane. Despite the much smaller ionic radius of Al3+ compared to that of Pb2+, nominal doping levels in a range from 8.1% to 24.3% were obtained when increasing the Al/Pb feed ratio from 1 to 4.5. Al3+ introduction leads to a hypsochromic shift of the photoluminescence (PL) emission of the CsPbBr3 nanocrystals. The PL peak position is highly stable over at least 6 months and tunable in a range of 510 to 480 nm by increasing the doping level. Structural analyses revealed a linear correlation between the PL energy and the lattice parameter with a slope of -1.96 eV/Å." @default.
- W4280491021 created "2022-05-22" @default.
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- W4280491021 date "2022-05-16" @default.
- W4280491021 modified "2023-09-27" @default.
- W4280491021 title "Room-Temperature Doping of CsPbBr<sub>3</sub> Nanocrystals with Aluminum" @default.
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- W4280491021 doi "https://doi.org/10.1021/acs.jpclett.2c01021" @default.
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