High-Temperature Single-Photon Emission From Covalently Functionalized van der Waals Heterostructures.

ABSTRACT: Two-dimensional (2D) transition metal dichalcogenides (TMDs) such as tungsten diselenide (WSe₂) are attractive nanomaterials for quantum information applications due to single-photon emission (SPE) from intrinsic atomic defects. Defect and strain engineering techniques have been developed to produce high purity, deterministically placed SPE in WSe₂. However, a major challenge in the application of these techniques is the low temperature required to observe defect-bound TMD exciton emission, typically limiting SPE to T < 30 K. SPE at higher temperatures either loses purity or requires integration into complex devices such as optical cavities. Here, 2D heterostructure engineering and molecular functionalization are combined to achieve high purity (>90%) SPE in strained

SUBMITTER: Gavin SC 

PROVIDER: S-EPMC12752596 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature