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Proceedings Paper

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

Paper 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.

Paper Details

Date Published: 10 March 2020
PDF
Proc. SPIE 11282, 2D Photonic Materials and Devices III, 1128209 (10 March 2020); doi: 10.1117/12.2543083
Show Author Affiliations
Kevin Han, Univ. of California, Berkeley (United States)
Geun Ho Ahn, Univ. of California, Berkeley (United States)
Joy Cho, Univ. of California, Berkeley (United States)
Seth Fortuna, Univ. of California, Berkeley (United States)
George Zhang, Univ. of California, Berkeley (United States)
Ali Javey, Univ. of California, Berkeley (United States)
Ming C. Wu, Univ. of California, Berkeley (United States)


Published in SPIE Proceedings Vol. 11282:
2D Photonic Materials and Devices III
Arka Majumdar; Carlos M. Torres Jr.; Hui Deng, Editor(s)

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