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Near-Unity Photoluminescence Quantum Yield in CsPbBr3 Nanocrystal Solid-State Films via Postsynthesis Treatment with Lead Bromide
Open accessAbstract
Metal halide perovskite nanocrystals (NCs) possess high photoluminescence (PL) quantum yield (PL) and color tunability. Yet, until now, it has been difficult to maintain the high PL observed in solution in spin-coated films. Here, we report a novel CsPbBr3 NCs room-temperature synthesis based on Cs acetate, which displays near-unity PL in solid-state films upon post-synthetic treatment with lead bromide. The as-synthesized NCs show a PL of 80% in spincoated films but the post-synthesis treatment further enhances the efficiency >95%. The high PL is further confirmed by the monomolecular decay of the PL (5.8 ns) indicating a nearly complete suppression of non-radiative channels. The obtained films demonstrate high stability in air and require around 3 weeks to decrease to half the initial PL value.
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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
Strongly emissive perovskite nanocrystal inks for high-voltage solar cells
Akkerman, Q. A., Gandini, M., Di Stasio, F., Rastogi, P., Palazon, F., Bertoni, G., Ball, J. M., Prato, M., Petrozza, A., & Manna, L. (2016) · Nature Energy · doi:10.1038/nenergy.2016.194 · Cited by 721
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Organic–Inorganic Hybrid Passivation Enables Perovskite QLEDs with an EQE of 16.48%
Song, J., Fang, T., Li, J., Xu, L., Zhang, F., Han, B., Shan, Q., & Zeng, H. (2018) · Advanced Materials · doi:10.1002/adma.201805409 · Cited by 507
Metal Halide Perovskite Nanosheet for X-ray High-Resolution Scintillation Imaging Screens
Zhang, Y., Sun, R., Ou, X., Fu, K., Chen, Q., Ding, Y., Xu, L.-J., Liu, L., Han, Y., Malko, A. V., et al. (2019) · ACS Nano · doi:10.1021/acsnano.8b09484 · Cited by 506
Bodnarchuk, M. I., Boehme, S. C., ten Brinck, S., Bernasconi, C., Shynkarenko, Y., Krieg, F., Widmer, R., Aeschlimann, B., Günther, D., Kovalenko, M. V., et al. (2019) · ACS Energy Letters · doi:10.1021/acsenergylett.8b01669 · Cited by 466
Achieving Near-Unity Photoluminescence Efficiency for Blue-Violet-Emitting Perovskite Nanocrystals
Mondal, N., De, A., & Samanta, A. (2019) · ACS Energy Letters · doi:10.1021/acsenergylett.8b01909 · Cited by 435
Metadata
- Authors
- Di Stasio, F., Christodoulou, S., Huo, N., & Konstantatos, G.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-09-15
- Volume
- 29
- Issue
- 18
- Pages
- 7663-7667
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2755057713
- Cited by
- 370
- References
- 2
- FWCI
- 16.33
- Type
- journal article
- Language
- en
- Open access
- green
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