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Fast Anion-Exchange in Highly Luminescent Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X = Cl, Br, I)
Open accessAbstract
Postsynthetic chemical transformations of colloidal nanocrystals, such as ion-exchange reactions, provide an avenue to compositional fine-tuning or to otherwise inaccessible materials and morphologies. While cation-exchange is facile and commonplace, anion-exchange reactions have not received substantial deployment. Here we report fast, low-temperature, deliberately partial, or complete anion-exchange in highly luminescent semiconductor nanocrystals of cesium lead halide perovskites (CsPbX3, X = Cl, Br, I). By adjusting the halide ratios in the colloidal nanocrystal solution, the bright photoluminescence can be tuned over the entire visible spectral region (410-700 nm) while maintaining high quantum yields of 20-80% and narrow emission line widths of 10-40 nm (from blue to red). Furthermore, fast internanocrystal anion-exchange is demonstrated, leading to uniform CsPb(Cl/Br)3 or CsPb(Br/I)3 compositions simply by mixing CsPbCl3, CsPbBr3, and CsPbI3 nanocrystals in appropriate ratios.
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Citations
Cited by
Genesis, challenges and opportunities for colloidal lead halide perovskite nanocrystals
Akkerman, Q. A., Rainò, G., Kovalenko, M. V., & Manna, L. (2018) · Nature Materials · doi:10.1038/s41563-018-0018-4 · Cited by 2,287
Self-citationZou, S., Liu, Y., Li, J., Liu, C., Feng, R., Jiang, F., Li, Y., Song, J., Zeng, H., Hong, M., et al. (2017) · Journal of the American Chemical Society · doi:10.1021/jacs.7b04000 · Cited by 854
CsPbxMn1–xCl3 Perovskite Quantum Dots with High Mn Substitution Ratio
Liu, H., Wu, Z., Shao, J., Yao, D., Gao, H., Liu, Y., Yu, W., Zhang, H., & Yang, B. (2017) · ACS Nano · doi:10.1021/acsnano.6b08747 · Cited by 587
Dong, Y., Qiao, T., Kim, D., Parobek, D., Rossi, D., & Son, D. H. (2018) · Nano Letters · doi:10.1021/acs.nanolett.8b00861 · Cited by 580
Efficient Luminescence from Perovskite Quantum Dot Solids
Kim, Y., Yassitepe, E., Voznyy, O., Comin, R., Walters, G., Gong, X., Kanjanaboos, P., Nogueira, A. F., & Sargent, E. H. (2015) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.5b09084 · Cited by 555
Metadata
- Authors
- Nedelcu, G., Protesescu, L., Yakunin, S., Bodnarchuk, M. I., Grotevent, M. J., & Kovalenko, M. V.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-07-28
- Volume
- 15
- Issue
- 8
- Pages
- 5635-5640
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2418376868
- Cited by
- 2,356
- References
- 0
- FWCI
- 94.62
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Nedelcu, G., Protesescu, L., Yakunin, S., Bodnarchuk, M. I., Grotevent, M. J., & Kovalenko, M. V. (2015). Fast Anion-Exchange in Highly Luminescent Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X = Cl, Br, I). Nano Letters. https://doi.org/10.1021/acs.nanolett.5b02404
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