MoS2- and MoO3-Based Ultrathin Layered Materials for Optoelectronic Applications

Abstract

The success in exfoliation and later chemical vapour deposition (CVD) of graphene, i.e. single-layer nanosheets of carbon atoms crystallized in hexagonal structure, triggered extensive investigations in non-graphene two-dimensional (2D) materials, driven by their dimension-reduction-induced physically unique and technologically useful properties. This chapter discusses the synthesis of semiconducting MoS2- and MoO3-based 2D materials, addressing their fabrication issues in recent bottom-up deposition techniques and/or post-deposition exfoliation processes. Typical applications of the 2D MoS2–MoO3 nanosheets composite thin films in optoelectronic devices are also presented and discussed. Through these discussions, we attempt to provide the readers a perspective on recent developments of MoS2- and MoO3-based 2D materials as well as their future opportunities towards practical applications in optoelectronic devices.