No Access Submitted: 18 February 2014 Accepted: 21 April 2014 Published Online: 07 July 2014
Appl. Phys. Lett. 105, 013101 (2014); https://doi.org/10.1063/1.4886096
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We present a fast method to fabricate high quality heterostructure devices by picking up crystals of arbitrary sizes. Bilayer graphene is encapsulated with hexagonal boron nitride to demonstrate this approach, showing good electronic quality with mobilities ranging from 17 000 cm2 V−1 s−1 at room temperature to 49 000 cm2 V−1 s−1 at 4.2 K, and entering the quantum Hall regime below 0.5 T. This method provides a strong and useful tool for the fabrication of future high quality layered crystal devices.
We thank L. Wang, I. Meric, C. R. Dean, and P. Kim for helpful discussion, and we acknowledge B. Wolfs, J. G. Holstein, H. M. de Roosz, and H. Adema for their technical assistance. The research leading to these results has received funding from the European Union Seventh Framework Programme under Grant Agreement No. 604391 Graphene Flagship, the Dutch Foundation for Fundamental Research on Matter (FOM), NWO, NanoNed, the Zernike Institute for Advanced Materials and CNPq, Brazil.
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