https://scholars.lib.ntu.edu.tw/handle/123456789/573715
標題: | Ultra-thin 2D transition metal monochalcogenide crystals by planarized reactions | 作者: | Chin H.-T., Hofmann M., Huang S.-Y., Yao S.-F., Lee J.-J., Chen C.-C., Ting C.-C., Hsieh Y.-P. Mario Hofmann |
關鍵字: | Crystals; Electronic properties; Transition metals; Crystal interfaces; Environmental stability; Lateral diffusion; Layer-by-layer growth; Opto-electronic sensors; Solid state chemical reactions; Spectroscopic characterization; Thermodynamic phasis; Phase transitions | 公開日期: | 2021 | 卷: | 5 | 期: | 1 | 來源出版物: | npj 2D Materials and Applications | 摘要: | We here present a planarized solid-state chemical reaction that can produce transition metal monochalcogenide (TMMC) 2D crystals with large lateral extent and finely controllable thickness down to individual layers. The enhanced lateral diffusion of a gaseous reactant at the interface between a solid precursor and graphene was found to provide a universal route towards layered TMMCs of different compositions. A unique layer-by-layer growth mechanism yields atomically abrupt crystal interfaces and kinetically controllable thickness down to a single TMMC layer. Our approach stabilizes 2D crystals with commonly unattainable thermodynamic phases, such as β-Cu2S and γ-CuSe, and spectroscopic characterization reveals ultra-large phase transition depression and interesting electronic properties. The presented ability to produce large-scale 2D crystals with high environmental stability was applied to highly sensitive and fast optoelectronic sensors. Our approach extends the morphological, compositional, and thermodynamic complexity of 2D materials. ? 2021, The Author(s). |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102170590&doi=10.1038%2fs41699-021-00207-2&partnerID=40&md5=8269f2af79a96ca80ff5b3a0edbac576 https://scholars.lib.ntu.edu.tw/handle/123456789/573715 |
ISSN: | 23977132 | DOI: | 10.1038/s41699-021-00207-2 |
顯示於: | 物理學系 |
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