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29 September 2017 Plasmon-enhanced photon emission and absorption in monolayer, two-dimensional semiconductors (Conference Presentation)
Koray Aydin
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Proceedings Volume 10349, Low-Dimensional Materials and Devices 2017; 1034904 (2017) https://doi.org/10.1117/12.2276059
Event: SPIE Nanoscience + Engineering, 2017, San Diego, California, United States
Abstract
Monolayer two-dimensional transition metal dichalcogenides (2D-TMDCs) have gained immense attention for their desirable transport properties and direct bandgap that have led to a plethora of studies on modern nanoelectronic and optoelectronic applications. These properties are known to occur exclusively in TMDCs when thinned down to one or few monolayers. However reduced dimensionality poses a significant challenge for photonics and optoelectronics applications due to poor light absorption and emission dictated by the volume of semiconductor material. Plasmonic nanostructures have been widely studied for enhancing light-matter interactions in wide variety of material systems resulting in increased emission and absorption properties. 2D Materials provide the ultimate lower limit in terms of material thickness, therefore investigation of plasmon/2D Material hybrid material systems with a specific aim to enhance light-matter interactions is essential for practical optoelectronic applications. In this talk, I will discuss increased photoluminescence emission from MoS2 using both periodic plasmonic nanodisc arrays as well as a single plasmonic optical antenna. I will also describe a method for understanding and identifying the contributions of excitation and emission field enhancements to the overall photoluminescence enhancement using a tapered gold antenna. Additionally, I will describe a systematic study in which we have demonstrated increased light absorption in a monolayer WS2 film.
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Koray Aydin "Plasmon-enhanced photon emission and absorption in monolayer, two-dimensional semiconductors (Conference Presentation)", Proc. SPIE 10349, Low-Dimensional Materials and Devices 2017, 1034904 (29 September 2017); https://doi.org/10.1117/12.2276059
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KEYWORDS
Absorption
Plasmonics
Luminescence
Optoelectronics
Light-matter interactions
Optical antennas
Semiconductor materials
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