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- W4241120146 abstract "Traditional CdSe-based colloidal quantum dots (cQDs) have interesting photoluminescence (PL) properties. Herein we highlight the advantages in both ensemble and single-nanocrystal PL of colloidal CsPbBr3 nanocrystals (NCs) over the traditional cQDs. An ensemble of colloidal CsPbBr3 NCs (11 nm) exhibits ca. 90 % PL quantum yield with narrow (FWHM=86 meV) spectral width. Interestingly, the spectral width of a single-NC and an ensemble are almost identical, ruling out the problem of size-distribution in PL broadening. Eliminating this problem leads to a negligible influence of self-absorption and Förster resonance energy transfer, along with batch-to-batch reproducibility of NCs exhibiting PL peaks within ±1 nm. Also, PL peak positions do not alter with measurement temperature in the range of 25 to 100 °C. Importantly, CsPbBr3 NCs exhibit suppressed PL blinking with ca. 90 % of the individual NCs remain mostly emissive (on-time >85 %), without much influence of excitation power." @default.
- W4241120146 created "2022-05-12" @default.
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- W4241120146 date "2015-11-05" @default.
- W4241120146 modified "2023-10-18" @default.
- W4241120146 title "Colloidal CsPbBr<sub>3</sub>Perovskite Nanocrystals: Luminescence beyond Traditional Quantum Dots" @default.
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- W4241120146 doi "https://doi.org/10.1002/ange.201508276" @default.
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