The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Visualization and Studies of Ion-Diffusion Kinetics in Cesium Lead Bromide Perovskite Nanowires
Abstract
The facile chemical transformation of metal halide perovskites via ion exchange has been attributed to their “soft” crystal lattices that enable fast ion migration. Kinetic studies of such processes could provide mechanistic insights on the ion migration dynamics. Herein, by using aligned single-crystal nanowires of cesium lead bromide (CsPbBr 3 ) perovskite on epitaxial substrates as platforms, we visualize and investigate the cation or anion interdiffusion kinetics via spatially resolved photoluminescence measurement on heterostructures fabricated by stacking CsPbCl 3, MAPbI 3, or MAPbBr 3 microplates on top of CsPbBr 3 nanowires. Time-dependent confocal photoluminescence microscopy and energy-dispersive X-ray spectroscopy showed the solid-state anion interdiffusion readily occurs to result in halide concentration gradients along CsPbBr 3–3 x Cl 3 x ( x = 0–1) nanowires. Quantitative analysis of such composition profiles using Fick’s law allowed us, for the first time, to extract interdiffusion coefficients of the chloride-bromide couple and an activation energy of 0.44 ± 0.02 eV for ion diffusion from temperature-dependent studies. In contrast, iodide-bromide interdiffusion is limited, likely due to the complex phase behaviors of mixed alloys of CsPb(Br,I) 3 . In contrast to the relatively mobile anions, A-site cation interdiffusion across the MAPbBr 3 /CsPbBr 3 junctions was barely observed at room temperature. Our results present a general method to investigate the kinetics of the solid-state ion migration, and the gained insights on ion diffusion can provide guidelines for rationally designing perovskite heterostructures that could lead to new properties for fundamental studies and technological applications.
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Cites
Lead halide perovskite nanowire lasers with low lasing thresholds and high quality factors
Zhu, H., Fu, Y., Meng, F., Wu, X., Gong, Z., Ding, Q., Gustafsson, M. V., Trinh, M. T., Jin, S., & Zhu, X.-Y. (2015) · Nature Materials · doi:10.1038/nmat4271 · Cited by 2,836
Self-citationAkkerman, Q. A., D’Innocenzo, V., Accornero, S., Scarpellini, A., Petrozza, A., Prato, M., & Manna, L. (2015) · Journal of the American Chemical Society · doi:10.1021/jacs.5b05602 · Cited by 2,197
Post-synthetic halide conversion and selective halogen capture in hybrid perovskites
Solis-Ibarra, D., Smith, I. C., & Karunadasa, H. I. (2015) · Chemical Science · doi:10.1039/c5sc01135c · Cited by 127
Cited by
Fu, Y., Zhu, H., Chen, J., Hautzinger, M. P., Zhu, X.-Y., & Jin, S. (2019) · Nature Reviews Materials · doi:10.1038/s41578-019-0080-9 · Cited by 934
Self-citationTwo-dimensional halide perovskite lateral epitaxial heterostructures
Shi, E., Yuan, B., Shiring, S. B., Gao, Y., Akriti, Guo, Y., Su, C., Lai, M., Yang, P., Kong, J., et al. (2020) · Nature · doi:10.1038/s41586-020-2219-7 · Cited by 466
Hazarika, A., Zhao, Q., Gaulding, E. A., Christians, J. A., Dou, B., Marshall, A. R., Moot, T., Berry, J. J., Johnson, J. C., & Luther, J. M. (2018) · ACS Nano · doi:10.1021/acsnano.8b05555 · Cited by 264
Operationally stable perovskite solar modules enabled by vapor-phase fluoride treatment
Zhao, X., Zhang, P., Liu, T., Tian, B., Jiang, Y., Zhang, J., Tang, Y., Li, B., Xue, M., Zhang, W., et al. (2024) · Science · doi:10.1126/science.adn9453 · Cited by 152
Elemental segregation and dimensional separation in halide perovskite light-emitting diodes
Yang, S. J., Lee, Y. H., Tateno, K., & Dou, L. (2024) · Progress in Quantum Electronics · doi:10.1016/j.pquantelec.2024.100537 · Cited by 10
Metadata
- Authors
- Pan, D., Fu, Y., Chen, J., Czech, K. J., Wright, J. C., & Jin, S.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-02-03
- Volume
- 18
- Issue
- 3
- Pages
- 1807-1813
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2786794850
- Cited by
- 191
- References
- 3
- FWCI
- 7.24
- Type
- journal article
- Language
- en
- Open access
- closed
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- Pan, D., Fu, Y., Chen, J., Czech, K. J., Wright, J. C., & Jin, S. (2018). Visualization and Studies of Ion-Diffusion Kinetics in Cesium Lead Bromide Perovskite Nanowires. Nano Letters. https://doi.org/10.1021/acs.nanolett.7b05023
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