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Stabilizing Cesium Lead Halide Perovskite Lattice through Mn(II) Substitution for Air-Stable Light-Emitting Diodes
Abstract
All-inorganic cesium lead halide perovskite (CsPbX 3, X = Cl, Br, and I) quantum dots (QDs), possessing high photoluminescence quantum yields and tunable color output, have recently been endowed great promise for high-performance solar cells and light-emitting diodes (LEDs). Although moisture stability has been greatly improved through separating QDs with a SiO 2 shell, the practical applications of CsPbX 3 QDs are severely restricted by their poor thermal stability, which is associated with the intrinsically low formation energies of perovskite lattices. In this regard, enhancing the formation energies of perovskite lattices of CsPbX 3 QDs holds great promise in getting to the root of their poor thermal stability, which hitherto remains untouched. Herein, we demonstrate an effective strategy through Mn 2+ substitution to fundamentally stabilize perovskite lattices of CsPbX 3 QDs even at high temperatures up to 200 °C under ambient air conditions. We employ first-principle calculations to confirm that the significantly improved thermal stability and optical performance of CsPbX 3:Mn 2+ QDs arise primarily from the enhanced formation energy due to the successful doping of Mn 2+ in CsPbX 3 QDs. Benefiting from such an effective substitution strategy, these Mn 2+ -doped CsPbX 3 QDs can function well as efficient light emitters toward the fabrication of high-performance perovskite LEDs.
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Cites
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Cited by
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Advanced Organic–Inorganic Hybrid Materials for Optoelectronic Applications
Zhou, K., Qi, B., Liu, Z., Wang, X., Sun, Y., & Zhang, L. (2024) · Advanced Functional Materials · doi:10.1002/adfm.202411671 · Cited by 228
Metadata
- Authors
- Zou, S., Liu, Y., Li, J., Liu, C., Feng, R., Jiang, F., Li, Y., Song, J., Zeng, H., Hong, M., & Chen, X.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-08-11
- Volume
- 139
- Issue
- 33
- Pages
- 11443-11450
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2739687650
- Cited by
- 854
- References
- 50
- FWCI
- 40.28
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zou, S., Liu, Y., Li, J., Liu, C., Feng, R., Jiang, F., Li, Y., Song, J., Zeng, H., Hong, M., & Chen, X. (2017). Stabilizing Cesium Lead Halide Perovskite Lattice through Mn(II) Substitution for Air-Stable Light-Emitting Diodes. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.7b04000
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