The DOI matches its Crossref record; 52 of the 52 references it cites were found in a registry or an index.
Reducing the impact of Auger recombination in quasi-2D perovskite light-emitting diodes
Open accessAbstract
Rapid Auger recombination represents an important challenge faced by quasi-2D perovskites, which induces resulting perovskite light-emitting diodes’ (PeLEDs) efficiency roll-off. In principle, Auger recombination rate is proportional to materials’ exciton binding energy (Eb). Thus, Auger recombination can be suppressed by reducing the corresponding materials’ Eb. Here, a polar molecule, p-fluorophenethylammonium, is employed to generate quasi-2D perovskites with reduced Eb. Recombination kinetics reveal the Auger recombination rate does decrease to one-order-of magnitude lower compared to its PEA+ analogues. After effective passivation, nonradiative recombination is greatly suppressed, which enables resulting films to exhibit outstanding photoluminescence quantum yields in a broad range of excitation density. We herein demonstrate the very efficient PeLEDs with a peak external quantum efficiency of 20.36%. More importantly, devices exhibit a record luminance of 82,480 cd m−2 due to the suppressed efficiency roll-off, which represent one of the brightest visible PeLEDs yet.
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Cites
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Elemental segregation and dimensional separation in halide perovskite light-emitting diodes
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Metadata
- Authors
- Jiang, Y., Cui, M., Li, S., Sun, C., Huang, Y., Wei, J., Zhang, L., Lv, M., Qin, C., Liu, Y., & Yuan, M.
- Venue
- Nature Communications
- Published
- 2021-01-12
- Volume
- 12
- Issue
- 1
- Pages
- 336-336
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W3120657218
- Cited by
- 469
- References
- 52
- FWCI
- 23.55
- Type
- journal article
- Language
- en
- Open access
- gold
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- Jiang, Y., Cui, M., Li, S., Sun, C., Huang, Y., Wei, J., Zhang, L., Lv, M., Qin, C., Liu, Y., & Yuan, M. (2021). Reducing the impact of Auger recombination in quasi-2D perovskite light-emitting diodes. Nature Communications. https://doi.org/10.1038/s41467-020-20555-9
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