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. 2020 Aug 24;11:4213. doi: 10.1038/s41467-020-18110-7

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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. 1 — a Device structure of ITO/AZO/PEIE/FAPbI₃/Poly-TPD/MoO₃/Al/ITO/Ag/ITO PeLED. b Electroluminescence spectra of PeLED from 1.6 to 4.0 V. Inset shows the near-infrared photo of a 120-mm² PeLED. c Combined current density vs. voltage (black solid and dashed lines) and radiance vs. voltage plots (blue solid and dashed lines) of PeLED. d External quantum efficiency vs. current density plots of PeLED. Solid lines represent device measurements from the front and dashed lines represent measurements from the back.