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31 May 2023 Engineering photoluminescence using low-cost platform in two-dimensional transition-metal dichalcogenides
Anuj Kumar Singh, Brijesh Kumar, Kishor Kumar Mandal, Lekshmi Eswaramoorthy, Anshuman Kumar
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Proceedings Volume PC12575, Integrated Optics: Design, Devices, Systems and Applications VII; PC1257508 (2023) https://doi.org/10.1117/12.2665609
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic
Abstract
Atomically thin two-dimensional transition metal dichalcogenides have fascinated researchers due to their unique electronic and optical properties. The control of exciton-trion dynamics in two-dimensional semiconductors is critical for their application in optoelectronic devices. One way to engineer the exciton-trion dynamics is by applying strain in the monolayers of these two-dimensional materials using nanostructured substrates. Here we demonstrate a versatile route to engineering the exciton-trion dynamics in monolayer WSe2 by applying biaxial strain. A polytetrafluoroethylene (PTFE) nanocone array decorated by thin gold film and fabricated via colloidal lithography is used to create the strain in the superposed monolayer. To distinguish the effect of strain and plasmonics, we compare our results on the nanocone surface with the one for monolayer WSe2 on a plane gold film.
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Anuj Kumar Singh, Brijesh Kumar, Kishor Kumar Mandal, Lekshmi Eswaramoorthy, and Anshuman Kumar "Engineering photoluminescence using low-cost platform in two-dimensional transition-metal dichalcogenides", Proc. SPIE PC12575, Integrated Optics: Design, Devices, Systems and Applications VII, PC1257508 (31 May 2023); https://doi.org/10.1117/12.2665609
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KEYWORDS
Luminescence
Particles
Self-assembled monolayers
Semiconductors
Nanostructures
Photomasks
Photonics
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