  Transition metal dichalcogenides (TMDs) are two-dimensional (2D) materials
with remarkable electrical, optical and chemical properties. One promising
strategy to tailor TMD properties of TMDs is to create alloys through
dopant-induced modification. Dopants can introduce additional states within the
bandgap of TMDs, leading to changes in their optical, electronic, and magnetic
properties. This paper overviews chemical vapor deposition (CVD) methods to
introduce dopants into TMD monolayers. The advantages and limitations and their
impacts on the doped TMDs' structural, electrical, optical, and magnetic
properties are discussed. The dopants in TMDs modify the density and type of
carriers in the material, thereby influencing the optical properties of the
materials. The TMDs' magnetic moment and circular dichroism are also strongly
affected by doping, which enhances the magnetic signal in the material.
Finally, we highlight the different doping-induced magnetic properties of TMDs,
including superexchange-induced ferromagnetism and valley Zeeman shift.
Overall, this review paper provides a comprehensive summary of magnetic TMDs
synthesized via CVD, which can guide future research on doped TMDs for various
applications, such as spintronics, optoelectronics, and magnetic memory
devices.
