A facile synthetic route to tungsten diselenide using a new precursor containing a long alkyl chain cation for multifunctional electronic and optoelectronic applications.

ABSTRACT: Single source precursors for coating and subsequent thermal decomposition processes enable a large-scale, low-cost synthesis of two-dimensional transition metal dichalcogenides (TMDs). However, practical applications based on two-dimensional TMDs have been limited by the lack of applicable single source precursors for the synthesis of p-type TMDs including layered tungsten diselenide (WSe₂). We firstly demonstrate the simple and facile synthesis of WSe₂ layers using a newly developed precursor that allows improved dispersibility and lower decomposition temperature. We study the thermal decomposition mechanism of three types of (Cat⁺)₂[WSe₄] precursors to assess the most suitable precursor for the synthesis of WSe₂ layers. Th

SUBMITTER: Kim J 

PROVIDER: S-EPMC9060927 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature