Na-assisted space-confining method for rapid growth of large-domain-size monolayer MoS2 on SiO2

• DOI: 10.1063/5.0205490
• Publication Date: 2024-07-11T11:25:18Z
• Authors: Miaomiao Zheng; Donghao Xu; Jie Lu; Gaoxiang Lin; Yangbo Chen; Junjie Huang; Yufeng Zhang; Weiwei Cai; Xueao Zhang
• Keywords: 0301 basic medicine; 03 medical and health sciences

Monolayer molybdenum disulfide (MoS2), a typical transition metal dichalcogenide (TMD), is promising functional material for next-generation electronics. However, growing large-domain-sized MoS2 single crystals on SiO2 remains considerably challenging. The amorphous structure and lack of catalytic activity prevent the deposition high-quality monolayer MoS2. Herein, Na-assisted space-confining method deployed to directly synthesize single-crystal SiO2. domain size reaches 450 μm within 3 min, fastest growth rate reported so far. This highly efficient probably due two factors: narrow space between sodium–calcium glass, substrate controls nucleus density; meanwhile, release Na from glass facilitates rapid formation large crystals. These results provide insights into TMD substrates.