Enabling room temperature ferromagnetism in monolayer MoS₂ via in situ iron-doping.

ABSTRACT: Two-dimensional semiconductors, including transition metal dichalcogenides, are of interest in electronics and photonics but remain nonmagnetic in their intrinsic form. Previous efforts to form two-dimensional dilute magnetic semiconductors utilized extrinsic doping techniques or bulk crystal growth, detrimentally affecting uniformity, scalability, or Curie temperature. Here, we demonstrate an in situ substitutional doping of Fe atoms into MoS₂ monolayers in the chemical vapor deposition growth. The iron atoms substitute molybdenum sites in MoS₂ crystals, as confirmed by transmission electron microscopy and Raman signatures. We uncover an Fe-related spectral transition of Fe:MoS₂ monolayers that appears at 2.28 eV above the pristine bandgap and displays pro

SUBMITTER: Fu S 

PROVIDER: S-EPMC7184740 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature