Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 8, Issue 7, Pages 1610-1614Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.7b00431
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Funding
- National Natural Science Foundation of China [NSFC 21673106, 51525303, 21233001]
- 111 Project
- Fundamental Research Funds for the Central Universities [lzujbky-2016-k08]
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A facile and green mechanosynthesis strategy free of solvent and high reaction temperature was developed to fabricate highly emissive cesium lead halide perovskite (CsPbX3) quantum dots (QDs). Their composition can be adjusted conveniently simply through mechanically milling/grinding stoichiometric combinations of raw reagents, thereby introducing a broad luminescence tunability of the product with adjustable wavelength, line width, and photoluminescence quantum yield. Desired CsPbX3 QDs library can thus be readily constructed in a way like assembling Lego building blocks. Hence, the method offered new avenues in the preparation of multicomponent cocrystals, adding one appealing apparatus to the tool box of perovskite-type QDs synthesis. Intriguingly, photoinduced dynamic study revealed the hole-transfer process of the as-prepared QDs toward electron donors, indicative of their potential in charge transfer-based applications such as light-harvesting devices and photocatalysis.
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