Point Defects in Two-Dimensional Indium Selenide as Tunable Single-Photon Sources.

ABSTRACT: In the past few years remarkable interest has been kindled by the development of nonclassical light sources and, in particular, of single-photon emitters (SPE), which represent fundamental building blocks for optical quantum technology. In this Letter, we analyze the stability and electronic properties of an InSe monolayer with point defects with the aim of demonstrating its applicability as an SPE. The presence of deep defect states within the InSe band gap is verified when considering substitutional defects with atoms belonging to group IV, V, and VI. In particular, the optical properties of Ge as substitution impurity of Se predicted by solving the Bethe-Salpeter equation on top of the GW corrected electronic states show that transitions between the valence band maximum and the defect s

SUBMITTER: Salomone M 

PROVIDER: S-EPMC8607502 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature