Enhanced Luminescence of GaN-based Light-Emitting Diodes

초록

This research is about the development of GaN-based light-emitting diode with a gold nano-particles arrayed layer for increasing the light output. Gold nano-particles induce a Localized Surface Plasmon Resonance (LSPR) [1]. This effect performs extracting the trapped light in a device, and then, enhances the luminous efficiency of LEDs. A gold nano-particles arrayed layer is fabricated by sputtering and annealing processes. The size of particles can be controlled by the three conditions, such as a sputtered film thickness, annealing temperature and time. These are important factors to determine the efficiency, because a Localized Surface Plasmon Resonance depends on the size of particles [2, 3]. The spectroscopic and electro-luminescent characteristics of fabricated LSPR LEDs with gold nano-particles of different size will be discussed.