Direct Synthesis of van der Waals Solids

  • Yu-Chuan Lin
Part of the Springer Theses book series (Springer Theses)


The stacking of two-dimensional layered materials such as semiconducting transition metal dichalcogenides (TMDCs), insulating hexagonal boron nitride (h-BN), and semi-metallic graphene has been theorized to produce tunable electronic and optoelectronic properties. In this chapter, we demonstrate the direct growth of MoS2, WSe2, and hBN on epitaxial graphene (EG) to form large-area van der Waal heterostructures. We reveal that the properties of the underlying graphene dictate properties of the heterostructures, where strain, wrinkling, and defects on the surface of graphene act as nucleation centers for lateral growth of the overlayer. Additionally, we demonstrate that the direct synthesis of TMDCs on EG exhibits atomically sharp interfaces. Finally, we demonstrate that direct growth of MoS2 on EG can lead to a 103 improvement in photoresponse compared to MoS2 alone.


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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • Yu-Chuan Lin
    • 1
  1. 1.Center for Nanophase Materials SciencesOak Ridge National LaboratoryOak RidgeUSA

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