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This study examines the optical and electronic properties of eight 2D transition metal chalcogenides (TMDs) covalently functionalized with perylene, forming hybrid materials. Characterization was performed using XPS, Raman, EDX, TEM, and AFM, while UV-Vis-NIR absorption and photoluminescence spectroscopy assessed optical properties. Electronic properties were analyzed via cyclic voltammetry and FET devices. The results showed that perylene’s spectroscopic features dominate, with WSe₂ and MoSe₂ exhibiting a new near-IR band and MoTe₂ showing enhanced conductivity. Perylene also boosted absorption (400–600 nm), improving photoresponse, with responsivities over 2 × 10⁵ % and 2 × 10⁴ mA W⁻¹. These hybrids rival top non-covalent functionalization methods, emphasizing covalent functionalization’s potential for tuning 2D materials.

Rights:

• https://creativecommons.org/licenses/by/3.0/
  

Keyword: 2D materials

Date published: 2025-02-27

Publisher: Royal Society of Chemistry (RSC)

Journal:

• Nanoscale (ISSN: 20403372) vol. 17 issue. 13 p. 8084-8100

Funding:

• Japan Society for the Promotion of Science P19368
• Ministry of Education, Culture, Sports, Science and Technology

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5436

First published URL: https://doi.org/10.1039/d4nr05364h

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Updated at: 2025-04-17 16:48:27 +0900

Published on MDR: 2025-04-20 17:17:36 +0900