Abstract
The last decade has witnessed significant progress in two-dimensional van der Waals (2D vdW) materials research; however, a number of challenges remain for their practical applications. The most significant challenge for 2D vdW materials is the control of the early stages of nucleation and growth of the material on preferred surfaces to eventually create large grains with digital thickness controllability, which will enable their incorporation into high-performance electronic and optoelectronic devices. This Perspective discusses the technical challenges to be overcome in the metal–organic chemical vapor deposition (MOCVD) growth of 2D group 6 transition metal dichalcogenide (TMD) atomic crystals and their heterostructures, as well as future research aspects in vdW epitaxy for 2D TMDs via MOCVD. In addition, we encourage the traditional MOCVD community to apply their expertise in the field of “2D vdW materials,” which will continue to grow at an exponential rate.
Highlights
Electronic and optoelectronic devices based on layered twodimensional transition metal dichalcogenides (2D TMDs) feature unique properties that yield outstanding figures of merit
It should be noted that most of the observed novel electrical and optoelectronic properties have been demonstrated in exfoliated TMD flakes
The focus is to (i) summarize the key technologies used for the metal–organic chemical vapor deposition (MOCVD) growth of 2D TMDs, (ii) highlight the potential of the MOCVD process while discussing its drawbacks, (iii) discuss many challenges that remain to be overcome for realizing practical applications of 2D TMD by MOCVD, and (iv) encourage the traditional MOCVD community to apply their expertise in the field of “2D vdW materials,” which will continue to grow at an exponential rate
Summary
Electronic and optoelectronic devices based on layered twodimensional transition metal dichalcogenides (2D TMDs) feature unique properties that yield outstanding figures of merit.
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