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Low-dimensional iodide perovskite nanocrystals enable efficient red emission

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Low-dimensional iodide perovskite nanocrystals enable efficient red emission

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dc.contributor.author	Martínez Sarti, Laura
dc.contributor.author	Jo, Seung Hyeon
dc.contributor.author	Kim, Young-Hoon
dc.contributor.author	Sessolo, Michele
dc.contributor.author	Palazón Huet, Francisco
dc.contributor.author	Lee, Tae-Woo
dc.contributor.author	Bolink, Henk
dc.date.accessioned	2020-02-24T15:00:20Z
dc.date.available	2020-02-24T15:00:20Z
dc.date.issued	2019
dc.identifier.citation	Martínez Sarti, Laura Jo, Seung Hyeon Kim, Young-Hoon Sessolo, Michele Palazón Huet, Francisco Lee, Tae-Woo Bolink, Henk 2019 Low-dimensional iodide perovskite nanocrystals enable efficient red emission Nanoscale 11 12793 12797
dc.identifier.uri	https://hdl.handle.net/10550/73220
dc.description.abstract	We report herein a simple ligand-assisted reprecipitation method at room temperature to synthesize mixed-cation hybrid organic-inorganic perovskite nanocrystals with low structural dimensionality. The emission wavelength of iodide-based perovskites is thus tuned from the near-infrared to the red part of the visible spectrum. While this is mostly achieved in the literature by addition of bromide, we demonstrate here a controllable blueshift of the band gap by varying the chain length of the alkylammonium ligands. Furthermore, an antisolvent washing step was found to be crucial to purify the samples and obtain single-peak photoluminescence with a narrow linewidth. The so-formed nanocrystals exhibit high and stable photoluminescence quantum yields exceeding 90% over 500 hours, making these materials ideal for light-emitting applications.
dc.language.iso	eng
dc.relation.ispartof	Nanoscale, 2019, vol. 11, p. 12793-12797
dc.subject	Materials
dc.subject	Nanotecnologia
dc.title	Low-dimensional iodide perovskite nanocrystals enable efficient red emission
dc.type	journal article	es_ES
dc.date.updated	2020-02-24T15:00:20Z
dc.identifier.doi	10.1039/C9NR04520A
dc.identifier.idgrec	133799
dc.rights.accessRights	open access	es_ES