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. 2021 Feb 8;12:871. doi: 10.1038/s41467-021-21158-8

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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 — All data are from Device #1 at V_b = 0.5 V. a PL spectra with a HeNe laser excitation. b Polarization-resolved PL spectra by sweeping σ⁺polarized excitation from 1.75 to 1.65 eV. The σ⁺ and σ⁻ components of the PL are shown in the left and middle panels, respectively, while the right panel shows the extracted degree of polarization η. c Polarization-dependent PL with the excitation in resonance with the free intervalley (top, 1.706 eV) and intravalley (bottom, 1.699 eV) trions, showing polarization reversal of the exciton satellite PL.