Fig. 23.

The selective substitution of TMC heterostructure synthesis. a Schematic showing the heterostructures synthesis protocol based on the sulfurization of patterned MoSe₂ monolayers. b Optical image of a representative lateral heterostructure. c, d Mapping intensity of the A_1g Raman modes of MoSe₂ in (b) at 241 cm^–1 and MoS₂ at 408 cm^–1, respectively. e Schematic showing the realization of an (x, y)-heterostructure with x < y. Reproduced with permission [176].

Copyright 2020, American Chemical Society. f Schematic illustrations showing the formation process of MoS₂-MoSe₂ by laser patterning and selective selenization. g Microscopy images after the process illustrated in f. Reproduced with permission [177]. Copyright 2021, American Chemical Society