Heterostructures of 2D TMDs and BN

Abstract

The journey of 2D materials when successful isolation of monolayer graphene from bulk graphite was demonstrated by A.K. Geim et al [1]. 2D materials provide the thinnest platform to make ultrathin electronic devices beyond Moores law [2]. In graphene, carbon atoM.S. are covalently bonded in a honeycomb lattice and is the basic building block of other important carbon structure such as graphite, fullerene and carbon nanotube. In this 2D honeycomb structure graphene has amazing physics and various extraordinary properties such as massless Dirac fermions[4], distinctive integer and half-integer quantum Hall effect [4-6], Klein Tunneling [7-8], ultra-high electron mobility (200,000 cm?2V?1s?1) [9-11] , very high thermal conductivity (600Wm-1K-1 )[12] , high intrinsic strength and Youngs modulus [13], very high surface area and ~ 97% transmittance for IR-UV range [14-15]. All these properties benefits graphene in many application including: ballistic transport [65], solar cell [16], energy storage [17], biosensors [18] , wearable device[19], transparent electrodes [20] and catalysis[21].