ABSTRACT

Contents 7.1 Introduction................................................................................................. 164

7.1.1 Background on MoS2 Research and Properties ........................ 164 7.1.1.1 Tribology ......................................................................... 164 7.1.1.2 Electronic ........................................................................ 166 7.1.1.3 Optical ............................................................................. 167 7.1.1.4 Other Applications ........................................................ 168

7.1.2 Phase Diagram/Structures ........................................................... 168 7.1.2.1 Common Polytypes ....................................................... 168 7.1.2.2 Growth Methods ........................................................... 170

7.1.3 Nanoelectronics and Device Interfaces ...................................... 171 7.1.3.1 FETs and Interfaces ....................................................... 171 7.1.3.2 TFETs and Interfaces .................................................... 172 7.1.3.3 Photonics and Interfaces .............................................. 172

7.1 Introduction In recent years, there has been a renewed interest in two-dimensional (2D) materials research. ese materials, which had primarily been used for their tribological properties, have become exciting candidates for beyond silicon and beyond CMOS nanoelectronic device applications. is renewed focus has coincided with an increased interest in monolayer MoS2 for its optoelectronic and photocatalytic properties. For this wide range of potential MoS2 applications, the surface and interfaces play critical roles in device behaviour. e characterisation of these interfaces will be the focus of this chapter and particular eorts will be made to highlight non-idealities and deviations from expected behaviour.