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Chemically Addressable Perovskite Nanocrystals for Light‐Emitting Applications
Abstract
Whereas organic–inorganic hybrid perovskite nanocrystals (PNCs) have remarkable potential in the development of optoelectronic materials, their relatively poor chemical and colloidal stability undermines their performance in optoelectronic devices. Herein, this issue is addressed by passivating PNCs with a class of chemically addressable ligands. The robust ligands effectively protect the PNC surfaces, enhance PNC solution processability, and can be chemically addressed by thermally induced crosslinking or radical‐induced polymerization. This thin polymer shield further enhances the photoluminescence quantum yields by removing surface trap states. Crosslinked methylammonium lead bromide (MAPbBr 3) PNCs are applied as active materials to build light‐emitting diodes that have low turn‐on voltages and achieve a record luminance of over 7000 cd m−2, around threefold better than previous reported MA‐based PNC devices. These results indicate the great potential of this ligand passivation approach for long lifespan, highly efficient PNC light emitters.
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Akkerman, 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
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Wei, Y., Cheng, Z., & Lin, J. (2019) · Chemical Society Reviews · doi:10.1039/c8cs00740c · Cited by 1,206
Improving the Stability of Metal Halide Perovskite Materials and Light‐Emitting Diodes
Cho, H., Kim, Y., Wolf, C., Lee, H., & Lee, T. (2018) · Advanced Materials · doi:10.1002/adma.201704587 · Cited by 470
Surface Chemistry Engineering of Perovskite Quantum Dots: Strategies, Applications, and Perspectives
Bai, Y., Hao, M., Ding, S., Chen, P., & Wang, L. (2022) · Advanced Materials · doi:10.1002/adma.202105958 · Cited by 394
Metadata
- Authors
- Sun, H., Yang, Z., Wei, M., Sun, W., Li, X., Ye, S., Zhao, Y., Tan, H., Kynaston, E. L., Schon, T. B., Yan, H., Lu, Z., Ozin, G. A., Sargent, E. H., & Seferos, D. S.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2017-07-10
- Volume
- 29
- Issue
- 34
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2734540745
- Cited by
- 163
- References
- 1
- FWCI
- 9.17
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sun, H., Yang, Z., Wei, M., Sun, W., Li, X., Ye, S., Zhao, Y., Tan, H., Kynaston, E. L., Schon, T. B., Yan, H., Lu, Z., Ozin, G. A., Sargent, E. H., & Seferos, D. S. (2017). Chemically Addressable Perovskite Nanocrystals for Light‐Emitting Applications. Advanced Materials. https://doi.org/10.1002/adma.201701153
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