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All‐Inorganic Perovskite Nanocrystals for High‐Efficiency Light Emitting Diodes: Dual‐Phase CsPbBr3‐CsPb2Br5 Composites
Abstract
A dual‐phase all‐inorganic composite CsPbBr 3‐CsPb 2 Br 5 is developed and applied as the emitting layer in LEDs, which exhibited a maximum luminance of 3853 cd m–2, with current density (CE) of ≈8.98 cd A–1 and external quantum efficiency (EQE) of ≈2.21%, respectively. The parasite of secondary phase CsPb 2 Br 5 nanoparticles on the cubic CsPbBr 3 nanocrystals could enhance the current efficiency by reducing diffusion length of excitons on one side, and decrease the trap density in the band gap on the other side. In addition, the introduction of CsPb 2 Br 5 nanoparticles could increase the ionic conductivity by reducing the barrier against the electronic and ionic transport, and improve emission lifetime by decreasing nonradiative energy transfer to the trap states via controlling the trap density. The dual‐phase all‐inorganic CsPbBr 3‐CsPb 2 Br 5 composite nanocrystals present a new route of perovskite material for advanced light emission 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
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
Cited by
Zou, 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
Shi, Z., Li, Y., Zhang, Y., Chen, Y., Li, X., Wu, D., Xu, T., Shan, C., & Du, G. (2017) · Nano Letters · doi:10.1021/acs.nanolett.6b04116 · Cited by 445
Bi, C., Wang, S., Li, Q., Kershaw, S. V., Tian, J., & Rogach, A. L. (2019) · The Journal of Physical Chemistry Letters · doi:10.1021/acs.jpclett.9b00290 · Cited by 367
Chen, W., Zhang, J., Xu, G., Xue, R., Li, Y., Zhou, Y., Hou, J., & Li, Y. (2018) · Advanced Materials · doi:10.1002/adma.201800855 · Cited by 348
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Metadata
- Authors
- Zhang, X., Xu, B., Zhang, J., Gao, Y., Zheng, Y., Wang, K., & Sun, X. W.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2016-04-26
- Volume
- 26
- Issue
- 25
- Pages
- 4595-4600
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2344756639
- Cited by
- 493
- References
- 2
- FWCI
- 37.96
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhang, X., Xu, B., Zhang, J., Gao, Y., Zheng, Y., Wang, K., & Sun, X. W. (2016). All‐Inorganic Perovskite Nanocrystals for High‐Efficiency Light Emitting Diodes: Dual‐Phase CsPbBr3‐CsPb2Br5 Composites. Advanced Functional Materials. https://doi.org/10.1002/adfm.201600958
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