Unveiling sulfur vacancy pairs as bright and stable color centers in monolayer WS₂.

ABSTRACT: Color centers, arising from zero-dimensional defects, exploit quantum confinement to access internal electron quantum degrees of freedom, holding potential for quantum technologies. Despite intensive research, the structural origin of many color centers remains elusive. In this study, we employ in-situ cathodoluminescence scanning transmission electron microscopy combined with integrated differential phase contrast imaging to examine how defect configuration in tungsten sulfide determines color-center emission. Using an 80-kV accelerated electron beam, defects were deliberately produced, visualized, excited in situ and characterized in real time in monolayer WS₂ within hBN|WS₂ | hBN heterostructures at 100 K. These color centers were simultaneously measured by cathodo

SUBMITTER: Sun H 

PROVIDER: S-EPMC11531563 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature