AVS 60th International Symposium and Exhibition
    Electronic Materials and Processing Wednesday Sessions
       Session EM-WeA

Invited Paper EM-WeA7
Graphene-based Vertical Heterostructures and Tunneling Field Effect Transistors

Wednesday, October 30, 2013, 4:00 pm, Room 101 B

Session: III-V Devices and Tunnel FETs
Presenter: E. Tutuc, The University of Texas at Austin
Authors: K. Lee, The University of Texas at Austin
K. Kim, The University of Texas at Austin
B. Fallahazad, The University of Texas at Austin
S. Larentis, The University of Texas at Austin
M.S. Points, The University of Texas at Austin
E. Tutuc, The University of Texas at Austin
Correspondent: Click to Email

We discuss the realization of vertical heterostructures consisting of two-dimensional materials, such as graphene and transition metal dichalcogenides, using a layer-by-layer transfer approach. We demonstrate double layer heterostructures consisting of two graphene layers separated by a thin hexagonal boron nitride dielectric, with layer mobilities as high as 200,000 cm2/Vs. We discuss the in-plane electron transport as a function of temperature and in magnetic fields, as well as the tunneling between the two layers, which can be used as basis for vertical field-effect transistors.