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. 2022 Feb 23;13:1007. doi: 10.1038/s41467-022-28628-7

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© The Author(s) 2022

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 Schematic diagram of quaternary alloy growth using a compressed plate mixed with chalcogenide powders of ZnS, ZnSe, and ZnTe. b Optical image of MoS_2(1-x-y)Se_2xTe_2y domain on SiO₂/Si substrate. c, d PL (c) and Raman (d) spectra of the MoS_2(1-x-y)Se_2xTe_2y sample grown at different temperatures. As the growth temperature increased, the PL peak position showed a clear red shift. The intensity of MoS₂-like E_2g (~380 cm⁻¹) and A_1g (~400 cm⁻¹) was reduced while the MoTe₂-like A_1g (~150 cm⁻¹) increased and MoSe₂-like A_1g (~240 cm⁻¹) increased first and then reduced. The shaded areas are added for clarity. e, f STEM images of the MoS_2(1-x-y)Se_2xTe_2y, demonstrating the high crystallinity of quaternary alloy. g Intensity profile along the labeled orange dotted box in (f), which highlights the occupancies of Mo, S, Se, and Te sites. h The Te-site distribution in a 32 × 32 nm² STEM image of the quaternary alloy. The image was divided into 30 × 30 parts. i The corresponding statistical histogram of Te-site counts in each parts of the image. It shows a well binomial distribution feature (purple dotted line), revealing the random distribution of Te atoms.