Electroluminescence efficiency enhancement using metal nanoparticles

Abstract

We apply the “effective mode volume” theory to evaluate enhancement of the electroluminescence efficiency of semiconductor emitters placed in the vicinity of isolated metalnanoparticles and their arrays. Using the example of an In Ga N ∕ Ga N quantum-well active region positioned in close proximity to Agnanospheres, we show that while the enhancement due to isolated metalnanoparticles is large, only modest enhancement can be obtained with ordered array of those particles. We further conclude that random assembly of isolated particles holds an advantage over the ordered arrays for light emitting devices of finite area.