Chemomechanical modification of quantum emission in monolayer WSe 2 .

Autor: Utama MIB; Department of Materials Science and Engineering and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA., Zeng H; Department of Physics and Astronomy, Northwestern University, Evanston, IL, 60208, USA., Sadhukhan T; Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA.; Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India., Dasgupta A; Department of Materials Science and Engineering and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA., Gavin SC; Department of Physics and Astronomy, Northwestern University, Evanston, IL, 60208, USA., Ananth R; Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA., Lebedev D; Department of Materials Science and Engineering and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA., Wang W; Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, 60439, USA., Chen JS; Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, 60439, USA.; Northwestern-Argonne Institute of Science and Engineering, Northwestern University, Evanston, IL, 60208, USA., Watanabe K; Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan., Taniguchi T; International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan., Marks TJ; Department of Materials Science and Engineering and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA.; Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA., Ma X; Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, 60439, USA.; Northwestern-Argonne Institute of Science and Engineering, Northwestern University, Evanston, IL, 60208, USA., Weiss EA; Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA., Schatz GC; Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA. g-schatz@northwestern.edu., Stern NP; Department of Physics and Astronomy, Northwestern University, Evanston, IL, 60208, USA. n-stern@northwestern.edu., Hersam MC; Department of Materials Science and Engineering and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA. m-hersam@northwestern.edu.; Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA. m-hersam@northwestern.edu.; Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL, 60208, USA. m-hersam@northwestern.edu.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Apr 17; Vol. 14 (1), pp. 2193. Date of Electronic Publication: 2023 Apr 17.
DOI: 10.1038/s41467-023-37892-0
Abstrakt: Two-dimensional (2D) materials have attracted attention for quantum information science due to their ability to host single-photon emitters (SPEs). Although the properties of atomically thin materials are highly sensitive to surface modification, chemical functionalization remains unexplored in the design and control of 2D material SPEs. Here, we report a chemomechanical approach to modify SPEs in monolayer WSe 2 through the synergistic combination of localized mechanical strain and noncovalent surface functionalization with aryl diazonium chemistry. Following the deposition of an aryl oligomer adlayer, the spectrally complex defect-related emission of strained monolayer WSe 2 is simplified into spectrally isolated SPEs with high single-photon purity. Density functional theory calculations reveal energetic alignment between WSe 2 defect states and adsorbed aryl oligomer energy levels, thus providing insight into the observed chemomechanically modified quantum emission. By revealing conditions under which chemical functionalization tunes SPEs, this work broadens the parameter space for controlling quantum emission in 2D materials.
(© 2023. The Author(s).)
Databáze: MEDLINE
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