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. 2021 May 25;16:94. doi: 10.1186/s11671-021-03551-w

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© The Author(s) 2021

Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 13 — a Schematic illustration of fabrication of 2D vdW heterostructured SnO/In₂O₃ film. b The HRTEM image of heterostructured SnO/In₂O₃ films. c The HRTEM image of atomic structure of heterostructured films show the high crystalline structure of SnO and In₂O₃ film with their lattice spacing distance. d The AFM of heterostructured SnO/In₂O₃ film with e the profile thickness of the films. f The Raman spectra of SnO, In₂O₃ and SnO/ In₂O₃ 2D films. g The optical absorption of SnO, In₂O₃ and SnO/ In₂O₃ 2D films. h The band alignment of SnO/ In₂O₃ 2D heterostructures. Reprinted with permission from [167]