Embedded lanthanoid ions modulated the periodic luminescence of transition metal dichalcogenide monolayers prepared from an aqueous orecursor

Abstract

Trivalent lanthanoid ions (Ln3+) with splendid inherency have been utilized in luminescent materials and photonic devices over decades. Since periodic physicochemical properties of lanthanoid compounds are found tightly relative to...

Understanding Dopant–Host Interactions on Electronic Structures and Optical Properties in Ce‐Doped WS2 Monolayers

“…On the other hand, the incorporated lanthanides can also modify the electronic and optical properties of host TMDs. [ 23,30,31,34 ] Hence, understanding the interactions between the lanthanide dopants and the 2D TMDs host, which is one of the key problems for the development and application of lanthanide‐doped TMDs in the correlated fields, is an essential work to be accomplished. Scanning tunneling microscopy/spectroscopy (STM/STS) is a powerful tool for exploring electronic structures at atomic scale while pump‐probe spectroscopy can probe ultrafast carrier dynamics at femtosecond scale.…”

“…Up to date, lanthanide doping of the 2D TMDs has made considerable progress, including developing several doping strategies, broadening the spectral range from the visible to near-infrared regions, introducing magnetism, and improving the photoelectric characteristics, etc. [22][23][24][25][26][27][28][29][30][31][32][33] 2D monolayer host provides a highly anisotropic crystal field for the lanthanide dopants due to their atomical thickness, which can strongly modify the dopants' electronic properties, then make big changes to the final doped products. On the other hand, the incorporated lanthanides can also modify the electronic and optical properties of host TMDs.…”