“…The attractive reported properties and potential applications of WSe 2 materials require a well-controlled synthesis, in terms of their structure, including the number of layers, crystallographic phase composition, or/and film morphology. For this purpose, different synthesis techniques, such as chemical-vapor transport using a sealed ampoule containing W and Se materials under a vacuum and heated at a high temperature [4,[12][13][14], chemical and mechanical exfoliation [15,16], physical techniques (molecular beam epitaxial growth [17], pulsed laser deposition [18], and magnetron sputtering of W in an Se-rich atmosphere [6]), chemical approaches (colloidal method [19,20] and electrodeposition [21]), and atmospheric pressure chemical vapor deposition (APCVD) [22][23][24][25][26], have been used to obtain WSe 2 . The majority of recent studies are focused on the synthesis of 2D WSe 2 , with domains of different shapes and sizes.…”