Download file (3.53 MB)
Download as zip (2.73 MB)

Collection

Citation

Description:

Two-dimensional materials such as monolayer WSe2 have prospective applications in quantum information science because of their capability to host single-photon emitters (SPE). However, chemical functionalization remains an unexplored parameter space in the design and control of SPE based on 2D materials, whose atomically thin structure should yield strong tunability with interfacial modifications. Moreover, SPEs in 2D materials are typically generated using a single mechanism such as strain. Here, we report a chemomechanical approach to modify SPEs by using a synergistic combination of localized mechanical strain and non-covalent functionalization with aryl diazonium chemistry. Following a facile diazonium treatment, the dense defect-related emissive states of strained monolayer WSe2 are simplified into spectrally-isolated SPE with high photon purity. Our work significantly broadens the possibilities in the parameter space of designing 2D materials-based SPEs by utilizing molecular heterojunction and chemical functionalization approaches.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: Two-dimensional materials, single-photon emitters, chemical functionalization

Date published: 2023-04-17

Publisher: Springer Science and Business Media LLC

Journal:

• Nature Communications (ISSN: 20411723) vol. 14 issue. 1 2193

Funding:

• U.S. Department of Energy DE-SC0021314
• U.S. Department of Energy DE-AC02-06CH11357
• National Science Foundation DMR-1720319
• National Science Foundation ECCS-2025633

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1038/s41467-023-37892-0

Related item:

Other identifier(s):

Contact agent:

Updated at: 2025-02-23 22:48:29 +0900

Published on MDR: 2025-02-23 22:48:29 +0900