Experimental observation of electroluminescence enhancement on green LEDs mediated by surface plasmons | Zendy

Kwang-Geol Lee | Zendy; Ki-Young Choi | Zendy; Jinha Kim | Zendy; Seok Ho Song | Zendy

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Experimental observation of electroluminescence enhancement on green LEDs mediated by surface plasmons

Author(s) -

Kwang-Geol Lee,

Ki-Young Choi,

Jinha Kim,

Seok Ho Song

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.0a1303

Subject(s) - light emitting diode , materials science , electroluminescence , voltage droop , optoelectronics , surface plasmon , plasmon , optics , green light , quantum efficiency , power (physics) , physics , nanotechnology , layer (electronics) , blue light , quantum mechanics , voltage divider

We experimentally demonstrate the 1.5-fold enhancement of the electroluminescence (EL) of surface-plasmon (SP)-mediated green LEDs. On the p-clad surface of InGaN/GaN multi-quantum well LEDs, a 2-dimensional, second-order grating structure is textured and coated with an Ag electrode. With this setup, a larger EL enhancement factor is obtained at a higher injected current, which suggests that SP-LEDs can be a possible solution to efficiency droop, which is one of the main problems in developing high-power LEDs. Details regarding the implementation of our device are discussed.

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