Abstract

Two-dimensional transition metal dichalcogenides (2D-TMDCs) such as molybdenum disulphide (2D-MoS₂) and tungsten disulphide (2D-WS₂) are now established as a class of nanomaterials that can be used in numerous applications due to their tuneable physical and chemical properties [1]. However, in terms of electrical characteristics and photoluminescence efficiency, WS₂ typically exhibits superior performance compared with the molybdenum analogue [2,3]. Nevertheless, synthesis of continuous, uniform and thickness controllable 2D-WS₂ films for (opto)electronic device fabrication is more challenging compared with better established 2D-MoS₂ growth protocols. Therefore, the search for alternative precursors and synthesis approaches of 2D-WS₂ that can provide mass production with excellent quality at low cost is highly desirable [1].

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