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. 2022 Aug 19;13:4890. doi: 10.1038/s41467-022-32029-1

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© The Author(s) 2022

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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — a Normalized steady-state photoluminescence (dotted lines) and phosphorescence (solid lines) spectra of FA/PVA (top), PXZA/PVA (middle) and NTIA/PVA (bottle). Insets show the corresponding photographs of films taken before (left) and after (right) the ultraviolet source switching off. b The CIE coordinate diagram for the UOP colors of FA/PVA, PXZA/PVA and NTIA/PVA. c Phosphorescence lifetimes and efficiencies of FA/PVA (left), PXZA/PVA (middle) and NTIA/PVA (right). d Excitation-phosphorescence mapping of FA (top), PXZA (middle) and NTIA (bottom) in PVA film.