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. 2023 Aug 1;14:4611. doi: 10.1038/s41467-023-40150-y

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — a Photograph of blue, sky-blue, green and pure-red light-emitting PeQW arrays under UV irradiation. b Normalized photoluminescence spectra (λ_ex = 350 nm) of our PeQW arrays. c Time-resolved photoluminescence decay curve (λ_ex = 365 nm) measured at corresponding photoluminescence peaks for the corresponding PeQW arrays. d TA spectra of four different PeQW arrays after excitation at 405 nm. e PLQYs of PeQWs and perovskite thin films.