Enhanced electroluminescence from WSe2 monolayers coupled to gold antenna arrays (Conference Presentation)

Kevin Han; Geun Ho Ahn; Joy Cho; Seth Fortuna; George Zhang; Ali Javey; Ming C. Wu

doi:10.1117/12.2543083

10 March 2020 Enhanced electroluminescence from WSe₂ monolayers coupled to gold antenna arrays (Conference Presentation)

Kevin Han, Geun Ho Ahn, Joy Cho, Seth Fortuna, George Zhang, Ali Javey, Ming C. Wu

Author Affiliations +

Proceedings Volume 11282, 2D Photonic Materials and Devices III; 1128209 (2020) https://doi.org/10.1117/12.2543083
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

Transition metal dichalcogenide (TMDC) monolayers are promising materials for nanoscale light emitters. By coupling TMDCs to optical antennas, the spontaneous emission rate can be greatly enhanced, yielding faster device modulation. However, achieving high rate enhancement is difficult with electrically-injected light emitters compared to optical injection. We demonstrate two device designs to overcome these challenges: 1) a light-emitting capacitor (LEC) coupled to a slot antenna array, and 2) a light-emitting diode (LED) coupled to a nanosquare antenna array. The LEC shows high polarization ratios >30x, while the LED shows >10x enhanced electroluminescence for the antenna coupled device relative to control devices.

Conference Presentation

Citation Download Citation

Kevin Han, Geun Ho Ahn, Joy Cho, Seth Fortuna, George Zhang, Ali Javey, and Ming C. Wu "Enhanced electroluminescence from WSe₂ monolayers coupled to gold antenna arrays (Conference Presentation)", Proc. SPIE 11282, 2D Photonic Materials and Devices III, 1128209 (10 March 2020); https://doi.org/10.1117/12.2543083

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