title: Electronics and optoelectronics of two-dimensional transition metal dichalcogenides.
abstract: The remarkable properties of graphene have renewed interest in inorganic, two-dimensional materials with unique electronic and optical attributes. Transition metal dichalcogenides (TMDCs) are layered materials with strong in-plane bonding and weak out-of-plane interactions enabling exfoliation into two-dimensional layers of single unit cell thickness. Although TMDCs have been studied for decades, recent advances in nanoscale materials characterization and device fabrication have opened up new opportunities for two-dimensional layers of thin TMDCs in nanoelectronics and optoelectronics. TMDCs such as MoS(2), MoSe(2), WS(2) and WSe(2) have sizable bandgaps that change from indirect to direct in single layers, allowing applications such as transistors, photodetectors and electroluminescent devices. We review the historical development of TMDCs, methods for preparing atomically thin layers, their electronic and optical properties, and prospects for future advances in electronics and optoelectronics.
authors.affiliation: Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts                 02139-4307, USA.
authors.forename: Qing Hua
authors.initials: QH
authors.lastname: Wang
authors.forename: Kourosh
authors.initials: K
authors.lastname: Kalantar-Zadeh
authors.forename: Andras
authors.initials: A
authors.lastname: Kis
authors.forename: Jonathan N
authors.initials: JN
authors.lastname: Coleman
authors.forename: Michael S
authors.initials: MS
authors.lastname: Strano
mesh_terms: D018011:Chalcogens / Q000737:chemistry*; D004581:Electronics / Q000295:instrumentation*; D004867:Equipment Design; D008958:Models, Molecular; D055095:Optics and Photonics / Q000295:instrumentation*; D012666:Semiconductors / Q000295:instrumentation*; D028561:Transition Elements / Q000737:chemistry*
chemical_list: D018011:Chalcogens; D028561:Transition Elements