期刊
RSC ADVANCES
卷 5, 期 119, 页码 98700-98708出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra19698a
关键词
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资金
- European Community's FP7 [314578 MEM4WIN]
- National Laboratory Sens&Micro LAB Project (POFESR) - Apulia Region [15]
The direct chemical vapor deposition of WS2 by W(CO)(6) and elemental sulfur as precursors onto epitaxial-graphene on SiC and CVD-graphene transferred on SiO2/Si substrate is presented. This methodology allows the epitaxial growth of continuous WS2 films with a homogeneous and narrow photoluminescence peak without inducing stress or structural defects in the graphene substrates. The control of the WS2 growth dynamics for providing the localized sulfide deposition by tuning the surface energy of the graphene substrates is also demonstrated. This growth methodology opens the way towards the direct bottom up fabrication of devices based on TMDCs/graphene van der Waals heterostructures.
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