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. 2021 Oct 20;12:6111. doi: 10.1038/s41467-021-26440-3

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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. 2 — a Electroluminescence spectra at normal emission for N = 1 → 6 stacked microcavity OLEDs. The highest energy peak at 495 nm had a linewidth of 10.5 nm (blue arrow) while the highest energy peak in the lower sub-band at 578 nm had a linewidth of 47 nm (red arrow). b Computationally simulated and experimentally resolved wavelength of the center of each state in the photonic bands as a function of N. States separate into two sub-bands due to the dual cavity unit cell.