Plasmonics is the technique to control and utilize the surface plasmon (SP) at metal interfaces. The use of plasmonics is one very promising method to improve the emission efficiencies of light-emitting diodes (LEDs). In 2004, we reported for the first time that the photoluminescence (PL) from InGaN/GaN quantum wells (QW) was highly enhanced by the SP resonance on Ag thin films based on the improvement of the internal quantum efficiency (IQE) [1]. By using this technique, high-efficiency light emission is predicted even by electrically pumping as well as photo pumping [2]. I present here the recent progress of our approach toward development of the high-efficiency plasmonic LED devices.

© 2015 Japan Society of Applied Physics, Optical Society of America

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