Li Shicheng, Li Qingyan, Duan Ruiping, Zhang Yong, Niu Gefei, Yang Yuhang, Sun Li, Gao Lei, Lu Jianchen, Cai Jinming
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, No. 68 Wenchang Road, Kunming 650093, China.
Faculty of Science, Kunming University of Science and Technology, No. 727 Jingming South Road, Kunming 650500, China.
J Chem Phys. 2024 Dec 7;161(21). doi: 10.1063/5.0239324.
Antimonene is a promising two-dimensional material that is calculated to have a significant fundamental bandgap usable for advanced applications such as field-effect transistors, photoelectric devices, and the quantum-spin Hall state. Herein, we conducted a comprehensive investigation of self-assembled Sb4 islands on Au and Ag surfaces by scanning tunneling microscopy. The Sb4 molecules form α-phase and β-phase structures on Au and Ag surfaces, respectively, each exhibiting distinct island patterns. We simulated these structures using density functional theory calculations. Finally, we demonstrated the metallic band structure of Sb4 islands and observed the spatial and energy-dependent contributions of Sb4 molecules to the electronic states. This research enhances the understanding of the synthesis process of antimonene on metal surfaces and provides valuable insights for the industrial production of antimonene.
锑烯是一种很有前途的二维材料，经计算它具有显著的本征带隙，可用于诸如场效应晶体管、光电器件和量子自旋霍尔态等先进应用。在此，我们通过扫描隧道显微镜对金和银表面上自组装的Sb4岛进行了全面研究。Sb4分子分别在金和银表面形成α相和β相结构，每种结构都呈现出独特的岛状图案。我们使用密度泛函理论计算对这些结构进行了模拟。最后，我们展示了Sb4岛的金属能带结构，并观察到Sb4分子对电子态的空间和能量相关贡献。这项研究增进了对锑烯在金属表面合成过程的理解，并为锑烯的工业化生产提供了有价值的见解。
