Abstract
In the surge of recent successes of 2D materials following the rise of graphene, molybdenum disulfide (2D-MoS2) has been attracting growing attention from both fundamental and applications viewpoints, owing to the combination of its unique nanoscale properties. For instance, the bandgap of 2D-MoS2, which changes from direct (in the bulk form) to indirect for ultrathin films (few layers), offers new prospects for various applications in optoelectronics. In this review, we present the latest scientific advances in the field of synthesis and characterization of 2D-MoS2 films while highlighting some of their applications in energy harvesting, gas sensing, and plasmonic devices. A survey of the physical and chemical processing routes of 2D-MoS2 is presented first, followed by a detailed description and listing of the most relevant characterization techniques used to study the MoS2 nanomaterial as well as theoretical simulations of its interesting optical properties. Finally, the challenges related to the synthesis of high quality and fairly controllable MoS2 thin films are discussed along with their integration into novel functional devices.
Highlights
Two-dimensional (2D) materials are generally defined as crystalline substances with a few atoms thickness [1]
Two-dimensional transition metal dichalcogenide (2D-TMDs) semiconducting (SC) materials have exhibited unique optical and electrical properties [11,12], resulting from the quantum confinement effect attributed to their shapes and sizes with respect to the Bohr radius [13,14,15,16,17], in addition to their surface effects, which is due to the transition from an indirect bandgap in the “bulk form” to a direct bandgap for the “mono- to few-layer” ultrathin film form [18]
Tremendous efforts have been devoted to the synthesis of 2D-MoS2 with controllable large-area growth and uniform atomic layers using both top-down and bottom-up approaches
Summary
Two-dimensional (2D) materials are generally defined as crystalline substances with a few atoms thickness [1]. It intends to provide insights on the remaining challenges to widen the applications range of this fantastic 2D-MoS2 material. These calculations were used to determine, respectively, the optoelectronic properties and photovoltaic performances in solar cell configuration. We discuss the reported works and point towards new directions and applications in which 2D-MoS2 would potentially play a key technological role
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