Deterministic Modification of CVD Grown Monolayer MoS2 with Optical Pulses
Turunen, M. T., Hulkko, E., Mentel, K. K., Bai, X., Akkanen, S., Amini, M., Li, S., Lipsanen, H., Pettersson, M., & Sun, Z. (2021). Deterministic Modification of CVD Grown Monolayer MoS2 with Optical Pulses. Advanced Materials Interfaces, 8(10), Article 2002119. https://doi.org/10.1002/admi.202002119
Published inAdvanced Materials Interfaces
© 2021 Wiley
Transition metal dichalcogenide monolayers have demonstrated a number of exquisite optical and electrical properties. Here, the authors report the optical modification of topographical and optical properties of monolayer MoS2 with femtosecond pulses under an inert atmosphere. A formation of three‐dimensional structures on monolayer MoS2 with tunable height up to ≈20 nm is demonstrated. In contrast to unmodified monolayer MoS2, these optically modified structures show significantly different optical properties, such as lower photoluminescence intensity and longer fluorescence lifetime. The results suggest a novel way to modify transition metal dichalcogenide materials for mechanic, electronic and photonic applications.
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Related funder(s)Academy of Finland
Funding program(s)Academy Project, AoF
Additional information about fundingThe authors thank Susobhan Das and Yunyun Dai for helpful discussions. They also acknowledge funding from Academy of Finland (Nos. 311330, 314810, 333982, 336144, and 336818), Academy of Finland Flagship Programme (No. 320167, PREIN), the European Union's Horizon 2020 research and innovation program (No. 820423,S2QUIP), the EU H2020‐MSCA‐RISE‐872049 (IPN‐Bio), and ERC (No. 834742). Parts of the research was performed at the Micronova Nanofabrication Centre of Aalto University. ...
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