Site-selectively generated photon emitters in monolayer MoS₂ via local helium ion irradiation.

ABSTRACT: Quantum light sources in solid-state systems are of major interest as a basic ingredient for integrated quantum photonic technologies. The ability to tailor quantum emitters via site-selective defect engineering is essential for realizing scalable architectures. However, a major difficulty is that defects need to be controllably positioned within the material. Here, we overcome this challenge by controllably irradiating monolayer MoS₂ using a sub-nm focused helium ion beam to deterministically create defects. Subsequent encapsulation of the ion exposed MoS₂ flake with high-quality hBN reveals spectrally narrow emission lines that produce photons in the visible spectral range. Based on ab-initio calculations we interpret these emission lines as stemming from the recomb

SUBMITTER: Klein J 

PROVIDER: S-EPMC6588625 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature