Observation of Strong Interlayer Coupling in MoS2/WS2 Heterostructures.

Zhang, Jing; Wang, Jinhuan; Chen, Peng; Sun, Yue; Wu, Shuang; Jia, Zhiyan; Lu, Xiaobo; Yu, Hua et al. · Adv Mater · 2016

basic_science · Level V

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Abstract

Epitaxial growth of A-A and A-B stacking MoS2 on WS2 via a two-step chemical vapor deposition method is reported. These epitaxial heterostructures show an atomic clean interface and a strong interlayer coupling, as evidenced by systematic characterization. Low-frequency Raman breathing and shear modes are observed in commensurate stacking bilayers for the first time; these can serve as persuasive fingerprints for interfacial quality and stacking configurations.