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From Nonluminescent Cs4PbX6 (X = Cl, Br, I) Nanocrystals to Highly Luminescent CsPbX3 Nanocrystals: Water-Triggered Transformation through a CsX-Stripping Mechanism
Abstract
We report a novel CsX-stripping mechanism that enables the efficient chemical transformation of nonluminescent Cs 4 PbX 6 (X = Cl, Br, I) nanocrystals (NCs) to highly luminescent CsPbX 3 NCs. During the transformation, Cs 4 PbX 6 NCs dispersed in a nonpolar solvent are converted into CsPbX 3 NCs by stripping CsX through an interfacial reaction with water in a different phase. This process takes advantage of the high solubility of CsX in water as well as the ionic nature and high ion diffusion property of Cs 4 PbX 6 NCs, and produces monodisperse and air-stable CsPbX 3 NCs with controllable halide composition, tunable emission wavelength covering the full visible range, narrow emission width, and high photoluminescent quantum yield (up to 75%). An additional advantage is that this is a clean synthesis as Cs 4 PbX 6 NCs are converted into CsPbX 3 NCs in the nonpolar phase while the byproduct of CsX is formed in water that could be easily separated from the organic phase. The as-prepared CsPbX 3 NCs show enhanced stability against moisture because of the passivated surface. Our finding not only provides a new pathway for the preparation of highly luminescent CsPbX 3 NCs but also adds insights into the chemical transformation behavior and stabilization mechanism of these emerging perovskite nanocrystals.
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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
Wei, Y., Cheng, Z., & Lin, J. (2019) · Chemical Society Reviews · doi:10.1039/c8cs00740c · Cited by 1,206
Bodnarchuk, M. I., Boehme, S. C., ten Brinck, S., Bernasconi, C., Shynkarenko, Y., Krieg, F., Widmer, R., Aeschlimann, B., Günther, D., Kovalenko, M. V., et al. (2019) · ACS Energy Letters · doi:10.1021/acsenergylett.8b01669 · Cited by 466
Hydrochromic CsPbBr3 Nanocrystals for Anti‐Counterfeiting
Yu, X., Wu, L., Yang, D., Cao, M., Fan, X., Lin, H., Zhong, Q., Xu, Y., & Zhang, Q. (2020) · Angewandte Chemie International Edition · doi:10.1002/anie.202005120 · Cited by 281
Self-citationZero-Dimensional Cesium Lead Halides: History, Properties, and Challenges
Akkerman, Q. A., Abdelhady, A. L., & Manna, L. (2018) · The Journal of Physical Chemistry Letters · doi:10.1021/acs.jpclett.8b00572 · Cited by 258
Metadata
- Authors
- Wu, L., Hu, H., Xu, Y., Jiang, S., Chen, M., Zhong, Q., Yang, D., Liu, Q., Zhao, Y., Sun, B., Zhang, Q., & Yin, Y.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-08-16
- Volume
- 17
- Issue
- 9
- Pages
- 5799-5804
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2746953395
- Cited by
- 442
- References
- 0
- FWCI
- 21.48
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Wu, L., Hu, H., Xu, Y., Jiang, S., Chen, M., Zhong, Q., Yang, D., Liu, Q., Zhao, Y., Sun, B., Zhang, Q., & Yin, Y. (2017). From Nonluminescent Cs4PbX6 (X = Cl, Br, I) Nanocrystals to Highly Luminescent CsPbX3 Nanocrystals: Water-Triggered Transformation through a CsX-Stripping Mechanism. Nano Letters. https://doi.org/10.1021/acs.nanolett.7b02896
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