Efficiency enhancement of micro-light-emitting diode with shrinking size by localized surface plasmons coupling
Journal article, 2024

The external quantum efficiency (EQE) enhancement of different sized GaN micro-light-emitting diodes (μLEDs) by using localized surface plasmons (LSPs) have been studied. Silver nanoparticles (Ag NPs) are attached to the sidewalls of μLEDs by spin-coating so as to be effectively coupled with the multiple quantum well (MQW) of μLEDs and generate the LSPs. In the μLEDs with 20 × 20 μm2 large mesas, the LSPs can effectively inhibit the efficiency droop. Compared to the μLED samples without the LSPs coupling, the EQE has been enhanced by about 8% at a high current density of 20,000 A/cm2. This work confirms the effectiveness of the LSPs technology in improving the μLED performances, which is originally practiced only on the basal faces of conventional LEDs.
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Published in

Applied Physics B: Lasers and Optics

0946-2171 (ISSN)

Vol. 130 Issue 3 art. no 36

Categorizing

Subject Categories (SSIF 2011)

Atom and Molecular Physics and Optics

Condensed Matter Physics

Identifiers

DOI

10.1007/s00340-024-08174-4

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Latest update

3/1/2024 8