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. 2020 Mar 3;9:31. doi: 10.1038/s41377-020-0264-5

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© The Author(s) 2020

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. 3 — a Photocurrent density (under air mass 1.5 G illumination) and dark current density curves of the broadband photodetectors. b Specific detectivity D* of the broadband photodetector at various light wavelengths under a bias voltage of −0.1 V. c Trap density of states curves of the perovskite/BHJ hybrid photodetectors. d Linear dynamic range of the broadband photodetectors under 475-nm LED illumination with various light intensities. The solid line represents linear fitting to the data. e LDR under 870-nm LED illumination. f Transient photocurrent curves of the broadband photodetector with device areas of 0.6 and 4.4 mm². Inset: TPC curve of the ultrafast photodetectors with a smaller area of 0.1 mm².