Vertical Heterostructure of SnS–MoS₂ Synthesized by Sulfur-Preloaded Chemical Vapor Deposition
2020
Diao, Mengjuan | Li, Hui | Hou, Ruipeng | Liang, Ying | Wang, Jun | Luo, Zhishan | Huang, Zhipeng | Zhang, Chi
We synthesize a vertical heterostructure (HS) between tin sulfide (SnS) and molybdenum sulfide (MoS₂) by chemical vapor deposition based on the preferential adsorption of sulfur on MoS₂. Most of the SnS grains nucleate on MoS₂ nanosheets, formatting partially stacked HS with large overlapping regions. Photoluminescence quenching of MoS₂ is observed and illustrates effective charge separation in HS. The HS shows increased reverse saturable absorption relative to MoS₂ and SnS. The preferential adsorption of sulfur powders on MoS₂ and HS growth reported herein will provide a promising approach to the synthesis of other two-dimensional HS.
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