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. 2021 Aug 6;12:4751. doi: 10.1038/s41467-021-25093-6

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© The Author(s) 2021

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 PL image of 90 cm² Cs-Pb-Br film fabricated by thermal evaporation. b,c The spatial distribution of PL intensity for the micro area (5 μm × 5 μm) and macro area (90 cm²). d The PL photo of CsPbBr₃ film with 900 μm × 900 μm pixels. e, f The images of fluorescence microscopy characterization for the patterned perovskite film. g EL photo of PeLED with a “HUST” pattern (48 mm²). h A flexible PeLED with an electroluminescent area of 300 mm². i Photograph 40.2 cm² PeLED under working conditions.