The hot pick-up technique for batch assembly of van der Waals heterostructures.

ABSTRACT: The assembly of individual two-dimensional materials into van der Waals heterostructures enables the construction of layered three-dimensional materials with desirable electronic and optical properties. A core problem in the fabrication of these structures is the formation of clean interfaces between the individual two-dimensional materials which would affect device performance. We present here a technique for the rapid batch fabrication of van der Waals heterostructures, demonstrated by the controlled production of 22 mono-, bi- and trilayer graphene stacks encapsulated in hexagonal boron nitride with close to 100% yield. For the monolayer devices, we found semiclassical mean-free paths up to 0.9 μm, with the narrowest samples showing clear indications of the transport being affected by b

SUBMITTER: Pizzocchero F 

PROVIDER: S-EPMC4912641 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature